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/go-form
/public
/.hugo_build.lock

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steps:
Build:
image: gitnet.fr/deblan/hugo
pull: true
environments:
HUGO_ENVIRONMENT: production
commands:
- hugo build
"Commit pages":
image: alpine/git
commands:
- mv public /tmp/
- git config --global user.email ci@gitnet.fr
- git config --global user.name CI
- git fetch --no-tags origin +refs/heads/pages
- git switch pages
- rm * -fr
- mv /tmp/public/* .
- git add .
- git commit -m "Build doc ${CI_BUILD_NUMBER}"
"Push pages":
image: appleboy/drone-git-push
commands:
settings:
branch: pages
remote: git@gitnet.fr:deblan/go-form.git
force: false
commit: false
ssh_key:
from_secret: ssh_priv_key

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## [Unreleased]
## v1.5.0
### Added
- feat: add collection widget
- feat: refactoring and improvement of example
## v1.4.0
### Added
- feat: add json configuration
### Fixed
- fix: reset `GlobalFields` in `End()`
## v1.3.0
### Added
- feat: allow to handle request using json body"
- feat: add `WithJsonRequest` on form
- feat: add `MapToUrlValues` transformer
## v1.2.0
### Added
- feat: add tag `field` to specify the naming strategy (case)
- feat: add `ErrorsTree` methods on form and field
## v1.1.6
### Fixed
- fix(input/choice): add specific validation func
## v1.1.5
### Fixed
- fix(input/choice): add specific validation func
## v1.1.4
### Fixed
- fix(theme/bootstrap5): fix button class
- fix(theme/html5): remove div wrapper on form content
## v1.1.3
### Fixed
- fix(form): replace existing option in WithOptions
## v1.1.2
### Added
- chore(example): remove boostrap classes
### Fixed
- fix(theme): checkbox is check on nil value
## v1.1.1
### Fixed
- feat(form): add default options
- fix(choice): fix Match when field data is nil
## v1.1.0
### Added
- feat: add go template functions to render a form, a field, etc.
- feat: add constraints (isodd, iseven)
- refactor: refactor constraint (not blank check)
### Changed
- feat: replace templates with gomponents
## v1.0.1
### Added
- doc: add documentation
## v1.0.0
### Added
- feat: form builder
- feat: form validation
- feat: form renderer

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LICENCE
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above cannot be given local legal effect according to their terms,
reviewing courts shall apply local law that most closely approximates
an absolute waiver of all civil liability in connection with the
Program, unless a warranty or assumption of liability accompanies a
copy of the Program in return for a fee.
END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
state the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
Also add information on how to contact you by electronic and paper mail.
If your software can interact with users remotely through a computer
network, you should also make sure that it provides a way for users to
get its source. For example, if your program is a web application, its
interface could display a "Source" link that leads users to an archive
of the code. There are many ways you could offer source, and different
solutions will be better for different programs; see section 13 for the
specific requirements.
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU AGPL, see
<https://www.gnu.org/licenses/>.

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all: build
serve:
hugo server --buildDrafts --disableFastRender
build:
hugo build

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@ -1,20 +0,0 @@
# go-form
Creating and processing HTML forms is hard and repetitive. You need to deal with rendering HTML form fields, validating submitted data, mapping the form data into objects and a lot more. [`go-form`][go-form] includes a powerful form feature that provides all these features.
[`go-form`][go-form] is heavily influenced by [Symfony Form](https://symfony.com/doc/current/forms.html). It includes:
* A form builder based on fields declarations and independent of structs
* Validation based on constraints
* Data mounting to populate a form from a struct instance
* Data binding to populate a struct instance from a submitted form
* Form renderer with customizable themes
## Documentation
* [Official documentation][doc]
* [Demo][demo]
[go-form]: https://gitnet.fr/deblan/go-form
[demo]: https://gitnet.fr/deblan/go-form-demo
[doc]: https://deblan.gitnet.page/go-form/

5
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@ -0,0 +1,5 @@
---
date: '{{ .Date }}'
draft: true
title: '{{ replace .File.ContentBaseName "-" " " | title }}'
---

60
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@ -0,0 +1,60 @@
.hidden {
display: none;
}
.hugo-goplay-summary {
cursor: pointer;
}
.hugo-goplay-textarea {
padding: 1rem;
width: 100%;
border-radius: 4px;
margin: 10px 0;
background-color: hsl(var(--primary-hue) var(--primary-saturation) calc(var(--primary-lightness) + calc(calc(100% - var(--primary-lightness)) / 50) * 27) / 0.1);
font-family: monospace;
}
.hugo-goplay-result pre {
padding: 1rem;
}
.hugo-goplay-result code {
background: none !important;
border: 0 !important;
}
.hugo-goplay-result .system {
color: green;
}
.hugo-goplay-result .stderr {
color: red;
}
.hugo-goplay-toolbox {
display: flex;
justify-content: flex-start;
margin-bottom: 2rem;
}
.hugo-goplay-toolbox .hugo-goplay-button {
font-size: 13px;
font-weight: bold;
border: 1px solid var(--primary);
padding: 0.15rem 0.75rem;
border-radius: 4px;
margin-left: 0.5rem;
color: var(--primary);
background-color: var(--theme);
}
.hugo-goplay-toolbox .hugo-goplay-button:hover {
border: 1px solid var(--theme);
color: var(--theme);
background-color: var(--primary);
}
.hugo-goplay-toolbox .hugo-goplay-button:first-child {
margin-left: 0;
}

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---
layout: hextra-home
title: "Welcome!"
---
{{< hextra/hero-badge >}}
<div class="hx:w-2 hx:h-2 hx:rounded-full hx:bg-primary-400"></div>
<span>Free, open source</span>
{{< icon name="arrow-circle-right" attributes="height=14" >}}
{{< /hextra/hero-badge >}}
<div class="hx:mt-6 hx:mb-6">
{{< hextra/hero-headline >}}
Create and process forms with Golang!
{{< /hextra/hero-headline >}}
</div>
<div class="hx:mb-12">
{{< hextra/hero-subtitle >}}
Fast, batteries-included Hugo theme&nbsp;<br class="hx:sm:block hx:hidden" />for creating beautiful static websites
{{< /hextra/hero-subtitle >}}
<br class="hx:sm:block hx:hidden" />
</div>
<div class="hx:mb-6">
{{< hextra/hero-button text="Get Started" link="docs" >}}
<br class="hx:sm:block hx:hidden" />
<br class="hx:sm:block hx:hidden" />
</div>
<div class="hx:mt-6"></div>
{{< hextra/feature-grid >}}
{{< hextra/feature-card
title="Fast and Full-featured"
subtitle="Simple and easy to use, yet powerful and feature-rich."
class="hx:aspect-auto hx:md:aspect-[1.1/1] hx:max-md:min-h-[340px]"
image="images/hextra-doc.webp"
imageClass="hx:top-[40%] hx:left-[24px] hx:w-[180%] hx:sm:w-[110%] hx:dark:opacity-80"
style="background: radial-gradient(ellipse at 50% 80%,rgba(194,97,254,0.15),hsla(0,0%,100%,0));"
>}}
{{< hextra/feature-card
title="Form builder and validation"
subtitle="Compose with just Markdown. Enrich with Shortcode components."
class="hx:aspect-auto hx:md:aspect-[1.1/1] hx:max-lg:min-h-[340px]"
image="images/hextra-markdown.webp"
imageClass="hx:top-[40%] hx:left-[36px] hx:w-[180%] hx:sm:w-[110%] hx:dark:opacity-80"
style="background: radial-gradient(ellipse at 50% 80%,rgba(142,53,74,0.15),hsla(0,0%,100%,0));"
>}}
{{< hextra/feature-card
title="Mount and bind any struct"
subtitle="Built-in full text search with FlexSearch, no extra setup required."
class="hx:aspect-auto hx:md:aspect-[1.1/1] hx:max-md:min-h-[340px]"
image="images/hextra-search.webp"
imageClass="hx:top-[40%] hx:left-[36px] hx:w-[110%] hx:sm:w-[110%] hx:dark:opacity-80"
style="background: radial-gradient(ellipse at 50% 80%,rgba(221,210,59,0.15),hsla(0,0%,100%,0));"
>}}
{{< /hextra/feature-grid >}}

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---
linkTitle: Installation
title: Installation
weight: 2
---
```golang
go get gitnet.fr/deblan/go-form
```

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---
linkTitle: "Documentation"
title: Introduction
---
Creating and processing HTML forms is hard and repetitive. You need to deal with rendering HTML form fields, validating submitted data, mapping the form data into objects and a lot more. **go-form** includes a powerful form feature that provides all these features.
**go-form** is heavily influenced by [Symfony Form](https://symfony.com/doc/current/forms.html). It includes:
* A form builder based on fields declarations and independent of structs
* Validation based on constraints
* Data mounting to populate a form from a struct instance
* Data binding to populate a struct instance from a submitted form
* Form renderer with customizable themes

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---
linkTitle: Constraints
title: Constraints
weight: 5
---
The validation is designed to validate data against constraints.
## Import
```golang
import (
"gitnet.fr/deblan/go-form/validation"
)
```
## Constraints
### Length
Validate the length of an array, a slice or a string
```golang
c := validation.NewLength()
// Define minimum
c.WithMin(1)
// Define minimum
c.WithMax(100)
// Define min and max
// Equivalent to c.WithMin(50).WithMax(50)
c.WithExact(50)
```
### Mail
```golang
validation.NewMail()
```
### Not blank
```golang
validation.NewNotBlank()
```
### Range
Validate a number
```golang
c := validation.NewRange()
// Define minimum
c.WithMin(1)
// Define minimum
c.WithMax(100)
// Define min and max
// Equivalent to c.WithMin(1).WithMax(100)
c.WithRange(1, 100)
```
### Regex
Validate a string with a regex
```golang
c := validation.NewRegex(`expression`)
// The value must match
c.MustMatch()
// The value must not match
c.MustNotMatch()
```
### Is even
Validate that a number is even.
```golang
validation.NewIsEven()
```
### Is odd
Validate that a number is odd.
```golang
validation.NewIsOdd()
```
## Custom constraint
Use case: you want to validate that the data equals "example"
```golang
package validation
import (
"reflect"
v "gitnet.fr/deblan/go-form/validation"
)
// Define a struct
type IsExample struct {
Message string
TypeErrorMessage string
}
// Create a factory
func NewIsExample() IsEven {
return IsEven{
Message: "This value does not equal \"example\".",
TypeErrorMessage: "This value can not be processed.",
}
}
// Implement the validation
func (c IsExample) Validate(data any) []Error {
errors := []Error{}
// Should not validate blank data
if len(v.NewNotBlank().Validate(data)) != 0 {
return []Error{}
}
t := reflect.TypeOf(data)
if t.Kind() == reflect.Ptr {
t = t.Elem()
}
switch t.Kind() {
case reflect.String:
if data.(string) != "example" {
errors = append(errors, Error(c.Message))
}
default:
errors = append(errors, Error(c.TypeErrorMessage))
}
return errors
}
```

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---
linkTitle: Fields
title: Fields
weight: 4
---
A field represents a field in a form.
### Checkbox
```golang
func NewFieldCheckbox(name string) *Field
```
{{% goplay-field %}}
<pre class="hidden">field := form.NewFieldCheckbox("Foo")</pre>
{{% /goplay-field %}}
Generates an input[type=checkbox]
### Choice
```golang
func NewFieldChoice(name string) *Field
```
{{% goplay-field %}}
<pre class="hidden">
field := form.NewFieldChoice("Foo")
</pre>
{{% /goplay-field %}}
Generates inputs (checkbox or radio) or selects
### Csrf
```golang
func NewFieldCsrf(name string) *Field
```
{{% goplay-field %}}
<pre class="hidden">
field := form.NewFieldCsrf("Foo")
</pre>
{{% /goplay-field %}}
### Date
```golang
func NewFieldDate(name string) *Field
```
{{% goplay-field %}}
<pre class="hidden">
field := form.NewFieldDate("Foo")
</pre>
{{% /goplay-field %}}
Generates an input[type=date] with default transformers
### Datetime
```golang
func NewFieldDatetime(name string) *Field
```
{{% goplay-field %}}
<pre class="hidden">
field := form.NewFieldDatetime("Foo")
</pre>
{{% /goplay-field %}}
Generates an input[type=datetime] with default transformers
### DatetimeLocal
```golang
func NewFieldDatetimeLocal(name string) *Field
```
{{% goplay-field %}}
<pre class="hidden">
field := form.NewFieldDatetimeLocal("Foo")
</pre>
{{% /goplay-field %}}
Generates an input[type=datetime-local] with default transformers
### Hidden
```golang
func NewFieldHidden(name string) *Field
```
{{% goplay-field %}}
<pre class="hidden">
field := form.NewFieldHidden("Foo")
</pre>
{{% /goplay-field %}}
Generates an input[type=hidden]
### Mail
```golang
func NewFieldMail(name string) *Field
```
{{% goplay-field %}}
<pre class="hidden">
field := form.NewFieldMail("Foo")
</pre>
{{% /goplay-field %}}
Generates an input[type=email]
### Number
```golang
func NewFieldNumber(name string) *Field
```
{{% goplay-field %}}
<pre class="hidden">
field := form.NewFieldNumber("Foo")
</pre>
{{% /goplay-field %}}
Generates an input[type=number] with default transformers
### Password
```golang
func NewFieldPassword(name string) *Field
```
{{% goplay-field %}}
<pre class="hidden">
field := form.NewFieldPassword("Foo")
</pre>
{{% /goplay-field %}}
Generates an input[type=password]
### Range
```golang
func NewFieldRange(name string) *Field
```
{{% goplay-field %}}
<pre class="hidden">
field := form.NewFieldRange("Foo")
</pre>
{{% /goplay-field %}}
Generates an input[type=range]
### Sub Form
```golang
func NewFieldSubForm(name string) *Field
```
{{% goplay-field %}}
<pre class="hidden">
field := form.NewFieldSubForm("Foo")
</pre>
{{% /goplay-field %}}
Alias:
```golang
func NewSubForm(name string) *Field
```
Generates a sub form
### Text
```golang
func NewFieldText(name string) *Field
```
{{% goplay-field %}}
<pre class="hidden">
field := form.NewFieldText("Foo")
</pre>
{{% /goplay-field %}}
Generates an input[type=text]
### Textarea
```golang
func NewFieldTextarea(name string) *Field
```
{{% goplay-field %}}
<pre class="hidden">
field := form.NewFieldTextarea("Foo")
</pre>
{{% /goplay-field %}}
Generates a textarea
### Time
```golang
func NewFieldTime(name string) *Field
```
{{% goplay-field %}}
<pre class="hidden">
field := form.NewFieldTime("Foo")
</pre>
{{% /goplay-field %}}
Generates an input[type=time] with default transformers
### Submit
```golang
func NewSubmit(name string) *Field
```
{{% goplay-field %}}
<pre class="hidden">
field := form.NewSubmit("Foo")
</pre>
{{% /goplay-field %}}
Generates an input[type=submit]
## Methods
### Add
```golang
func (f *Field) Add(children ...*Field) *Field
```
Appends children
### Bind
```golang
func (f *Field) Bind(data map[string]any, key *string) error
```
Bind the data into the given map
### GetChild
```golang
func (f *Field) GetChild(name string) *Field
```
Returns a child using its name
### GetId
```golang
func (f *Field) GetId() string
```
Computes the id of the field
### GetName
```golang
func (f *Field) GetName() string
```
Computes the name of the field
### GetOption
```golang
func (f *Field) GetOption(name string) *Option
```
Returns an option using its name
### HasChild
```golang
func (f *Field) HasChild(name string) bool
```
Checks if the field contains a child using its name
### HasOption
```golang
func (f *Field) HasOption(name string) bool
```
Checks if the field contains an option using its name
### Mount
```golang
func (f *Field) Mount(data any) error
```
Populates the field with data
### ResetErrors
```golang
func (f *Field) ResetErrors() *Field
```
Resets the field errors
### WithBeforeBind
```golang
func (f *Field) WithBeforeBind(callback func(data any) (any, error)) *Field
```
Sets a transformer applied to the data of a field before defining it in a structure
### WithBeforeMount
```golang
func (f *Field) WithBeforeMount(callback func(data any) (any, error)) *Field
```
Sets a transformer applied to the structure data before displaying it in a field
### WithConstraints
```golang
func (f *Field) WithConstraints(constraints ...validation.Constraint) *Field
```
Appends constraints
### WithData
```golang
func (f *Field) WithData(data any) *Field
```
Sets data the field
### WithFixedName
```golang
func (f *Field) WithFixedName() *Field
```
Sets that the name of the field is not computed
### WithOptions
```golang
func (f *Field) WithOptions(options ...*Option) *Field
```
#### Common options
| Name | type | description | Info |
| ---- | ---- | ---- | ---- |
| `required` | `bool` | Add `required="true"` | Does not apply a constraint |
| `attr` | `form.Attrs` | List of extra attributes of the field | |
| `row_attr` | `form.Attrs` | List of extra attributes of the field's top container | |
| `label` | `string` | The label of the field | Usually show before the field |
| `label_attr` | `form.Attrs` | List of extra attributes of the label | |
| `help` | `string` | Helper of the field | |
| `help_attr` | `form.Attrs` | List of extra attributes of the help | |
Appends options to the field
### WithSlice
```golang
func (f *Field) WithSlice() *Field
```
Sets that the field represents a data slice

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---
linkTitle: Form
title: Form
weight: 3
---
## Example
### Prerequisites
```golang
import (
"gitnet.fr/deblan/go-form/form"
"gitnet.fr/deblan/go-form/validation"
)
type Person struct {
Name string
Age int
}
```
### Creating a form
```golang
myForm := form.NewForm(
form.NewFieldText("Name").
WithConstraints(
validation.NewNotBlank(),
),
form.NewFieldNumber("Age").
WithConstraints(
validation.NewNotBlank(),
validation.NewRange().WithMin(18),
),
).End()
```
### Validating a struct
```golang
data := Person{}
myForm.Mount(data)
myForm.IsValid() // false
data = Person{
Name: "Alice",
Age: 42,
}
myForm.Mount(data)
myForm.IsValid() // true
```
### Validating a request
```golang
import (
"net/http"
)
myForm.WithMethod(http.MethodPost)
// req *http.Request
if req.Method == myForm.Method {
myForm.HandleRequest(req)
if myForm.IsSubmitted() && myForm.IsValid() {
myForm.Bind(&data)
}
}
```
## Struct
```golang
type Form struct {
Fields []*Field
GlobalFields []*Field
Errors []validation.Error
Method string
Action string
Name string
Options []*Option
RequestData *url.Values
}
```
## Methods
### NewForm
```golang
func NewForm(fields ...*Field) *Form
```
Generates a new form with default properties
### Add
```golang
func (f *Form) Add(fields ...*Field)
```
Appends children
### AddGlobalField
```golang
func (f *Form) AddGlobalField(field *Field)
```
Configures its children deeply
### Bind
```golang
func (f *Form) Bind(data any) error
```
Copies datas from the form to a struct
### End
```golang
func (f *Form) End() *Form
```
Configures its children deeply This function must be called after adding all
fields
### GetField
```golang
func (f *Form) GetField(name string) *Field
```
Returns a child using its name
### GetOption
```golang
func (f *Form) GetOption(name string) *Option
```
Returns an option using its name
### HandleRequest
```golang
func (f *Form) HandleRequest(req *http.Request)
```
Processes a request
### HasField
```golang
func (f *Form) HasField(name string) bool
```
Checks if the form contains a child using its name
### HasOption
```golang
func (f *Form) HasOption(name string) bool
```
Checks if the form contains an option using its name
### IsSubmitted
```golang
func (f *Form) IsSubmitted() bool
```
Checks if the form is submitted
### IsValid
```golang
func (f *Form) IsValid() bool
```
Checks the a form is valid
### Mount
```golang
func (f *Form) Mount(data any) error
```
Copies datas from a struct to the form
### ResetErrors
```golang
func (f *Form) ResetErrors() *Form
```
Resets the form errors
### WithAction
```golang
func (f *Form) WithAction(v string) *Form
```
Sets the action of the form (eg: "/")
### WithMethod
```golang
func (f *Form) WithMethod(v string) *Form
```
Sets the method of the format (http.MethodPost, http.MethodGet, ...)
### WithName
```golang
func (f *Form) WithName(v string) *Form
```
Sets the name of the form (used to compute name of fields)
### WithOptions
```golang
func (f *Form) WithOptions(options ...*Option) *Form
```
Appends options to the form
#### Options
| Name | Type | Description |
| ---- | ---- | ---- |
| `attr` | `map[string]string` | List of extra attributes |
| `help` | `string` | Helper |

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---
linkTitle: Rendering
title: Rendering
weight: 6
---
**go-form** allows you to render a form using Go's built-in template engine.
Here is a simple example that displays a form:
```golang
myForm := form.NewForm(...)
render := theme.NewRenderer(theme.Bootstrap5)
tpl, _ := template.New("page").Funcs(render.FuncMap()).Parse(`
<html>
<head>
<title>My form</title>
</head>
<body>
{{ form .Form }}
</body>
</html>
`)
b := new(strings.Builder)
tpl.Execute(w, map[string]any{
"Form": myForm,
})
fmt.Println(b.String())
```
{{% goplay-auto-import-main %}}
<pre class="hidden">
@import "fmt"
@import "html/template"
@import "strings"
@import
@import "github.com/yosssi/gohtml"
@import "gitnet.fr/deblan/go-form/example"
@import "gitnet.fr/deblan/go-form/theme"
form := example.CreateDataForm()
render := theme.NewRenderer(theme.Html5)
// render := theme.NewRenderer(theme.Bootstrap5)
tpl, _ := template.New("page").Funcs(render.FuncMap()).Parse(`{{ form .Form }}`)
buff := new(strings.Builder)
tpl.Execute(buff, map[string]any{
"Form": form,
})
fmt.Println(gohtml.Format(buff.String()))
</pre>
{{% /goplay-auto-import-main %}}
Other helper functions are available to render specific parts of the form:
- `form_errors`: displays the form's global errors
- `form_row` : renders the label, errors, and widget of a field
- `form_label`: renders only the label of a field
- `form_widget`: renders only the widget of a field
- `form_widget_errors`: renders only the errors of a specific field

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---
linkTitle: Theming
title: Theming
---
**go-form** provides 2 themes:
- `theme.Html5`: a basic view without classes
- `theme.Bootstrap5`: a theme for [Bootstrap 5](https://getbootstrap.com/)
You can add a custom theme. Learn by reading the [Bootstrap5](https://gitnet.fr/deblan/go-form/src/branch/main/theme/bootstrap5.go) theme.

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@ -0,0 +1,120 @@
---
linkTitle: Workflow
title: Workflow
weight: 2
---
{{% steps %}}
### Import
```golang
import (
"html/template"
"net/http"
"gitnet.fr/deblan/go-form/form"
"gitnet.fr/deblan/go-form/theme"
)
```
### Create a form
```golang
// Let's create a new form
// You can pass *form.Field as arguments
myForm := form.NewForm(field1, field2, ...)
// Add somes fields
myForm.Add(field3, field4, ...)
// Set the method
// <form method="POST" ...>
myForm.WithMethod(http.MethodPost)
// Define the action
// <form action="/" ...>
myForm.WithAction("/")
// Set a name
myForm.WithName("myForm")
// Add options
myForm.WithOptions(option1, option2, ...)
// When all fields are added, call End()
myForm.End()
```
#### Attributes
Some options are natively supported in go-form themes.
```golang
myForm.WithOptions(
form.NewOption("help", "A help for the form"),
// <form data-foo="bar" data-bar="bar" ...
form.NewOption("attr", form.Attrs{
"data-foo": "foo",
"data-bar": "bar",
}),
)
```
### Data mounting
This step is not required when you does not want to pre-fill the form.
Your struct can be complexe and the form only map existing properties.
```golang
type Person struct {
Name string
Age int
}
data := Person{
Name: "Alice",
Age: 42,
}
// Assuming 2 fields named "Name" and "Age" exist
myForm.Mount(data)
```
### Rendering
```golang
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
// myForm := form.NewForm(...)
render := theme.NewRenderer(theme.Html5)
tpl, _ := template.New("page").Funcs(render.FuncMap()).Parse(`{{ form .Form }}`)
w.Header().Set("Content-Type", "text/html; charset=utf-8")
tpl.Execute(w, map[string]any{
"Form": myForm,
})
}
```
### Data binding
This is the final step. After the form handles the request, you can check if the form has been submitted, check the values are valid and finally populate your struct.
```golang
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
// data := Person{...}
// myForm := form.NewForm(...)
if r.Method == myForm.Method {
myForm.HandleRequest(r)
if myForm.IsSubmitted() && myForm.IsValid() {
myForm.Bind(&data)
}
}
})
```
{{% /steps %}}

1
doc.md
View file

@ -1 +0,0 @@
go doc -all -short form.Form | sed 's/^func \(.*\)$/### \0\n\n\`\`\`golang\n\0\n\`\`\`/g' | sed 's/^ \(.*\)/\n\1/g' | sed 's/^### func .* \(.*\)\((.*)\).*/### \1/' | xclip -sel c

View file

@ -1,81 +0,0 @@
package main
import (
"embed"
"encoding/json"
"html/template"
"log"
"net/http"
"github.com/yassinebenaid/godump"
"gitnet.fr/deblan/go-form/example"
"gitnet.fr/deblan/go-form/theme"
)
//go:embed example/view/*.html
var templates embed.FS
func handler(view, action string, formRenderer *theme.Renderer, w http.ResponseWriter, r *http.Request) {
entity := example.ExampleData{}
entityForm := example.CreateDataForm(action)
entityForm.Mount(entity)
style := example.NewTheme(action)
styleForm := example.CreateThemeSelectorForm()
styleForm.Mount(style)
if r.Method == entityForm.Method {
entityForm.HandleRequest(r)
if entityForm.IsSubmitted() && entityForm.IsValid() {
entityForm.Bind(&entity)
}
}
content, _ := templates.ReadFile(view)
formAsJson, _ := json.MarshalIndent(entityForm, " ", " ")
tpl, _ := template.New("page").
Funcs(formRenderer.FuncMap()).
Parse(string(content))
w.Header().Set("Content-Type", "text/html; charset=utf-8")
var dump godump.Dumper
dump.Theme = godump.Theme{}
tpl.Execute(w, map[string]any{
"isSubmitted": entityForm.IsSubmitted(),
"isValid": entityForm.IsValid(),
"form": entityForm,
"styleForm": styleForm,
"json": string(formAsJson),
"dump": template.HTML(dump.Sprint(entity)),
})
}
func main() {
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
handler(
"example/view/html5.html",
"/",
theme.NewRenderer(theme.Html5),
w,
r,
)
})
http.HandleFunc("/bootstrap", func(w http.ResponseWriter, r *http.Request) {
handler(
"example/view/bootstrap.html",
"/bootstrap",
theme.NewRenderer(theme.Bootstrap5),
w,
r,
)
})
log.Println("Browse: http://localhost:1122")
log.Fatal(http.ListenAndServe(":1122", nil))
}

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@ -1,251 +0,0 @@
package example
import (
"net/http"
"time"
"github.com/spf13/cast"
"gitnet.fr/deblan/go-form/form"
"gitnet.fr/deblan/go-form/validation"
)
type Item struct {
Id uint
Name string
}
type ExampleOtherInputs struct {
Number float32
Range uint
Mail string
Password string
}
type ExampleChoices struct {
Select *Item
SelectExpanded *Item
MultipleSelect []Item
MultipleSelectExpanded []Item
}
type ExampleDates struct {
Date *time.Time
DateTime *time.Time
DateTimeLocal *time.Time
Time *time.Time
}
type ExampleData struct {
Collection []CollectionItem
Bytes []byte
Text string
Checkbox bool
Dates ExampleDates
Choices ExampleChoices
Inputs ExampleOtherInputs
}
type CollectionItem struct {
ValueA string
ValueB string
}
type Theme struct {
Value string `field:"lowerCamel"`
}
func CreateDataForm(action string) *form.Form {
items := []Item{
Item{Id: 1, Name: "Item 1"},
Item{Id: 2, Name: "Item 2"},
Item{Id: 3, Name: "Item 3"},
}
itemsChoices := form.NewChoices(items).
WithValueBuilder(func(key int, item any) string {
return cast.ToString(item.(Item).Id)
}).
WithLabelBuilder(func(key int, item any) string {
return item.(Item).Name
})
return form.NewForm(
form.NewFieldText("Bytes").
WithOptions(
form.NewOption("label", "Bytes"),
form.NewOption("required", true),
).
WithBeforeMount(func(data any) (any, error) {
return cast.ToString(data), nil
}).
WithBeforeBind(func(data any) (any, error) {
return []byte(cast.ToString(data)), nil
}).
WithConstraints(
validation.NewNotBlank(),
),
form.NewFieldTextarea("Text").
WithOptions(
form.NewOption("label", "Text"),
form.NewOption("help", "Must contain 'deblan'"),
).
WithConstraints(
validation.NewRegex(`deblan`),
),
form.NewFieldCheckbox("Checkbox").
WithOptions(
form.NewOption("label", "Checkbox"),
),
form.NewSubForm("Inputs").
WithOptions(
form.NewOption("label", "Inputs"),
).
Add(
form.NewFieldNumber("Number").
WithOptions(
form.NewOption("label", "Number"),
).
WithConstraints(
validation.NewRange().WithRange(1, 20),
validation.NewIsEven(),
),
form.NewFieldRange("Range").
WithOptions(
form.NewOption("label", "Range"),
),
form.NewFieldMail("Mail").
WithOptions(
form.NewOption("label", "Mail"),
).
WithConstraints(
validation.Mail{},
),
form.NewFieldPassword("Password").
WithOptions(
form.NewOption("label", "Password"),
).
WithConstraints(
validation.NewLength().WithMin(10),
),
),
form.NewSubForm("Dates").
WithOptions(
form.NewOption("label", "Dates"),
).
Add(
form.NewFieldDate("Date").
WithOptions(
form.NewOption("label", "Date"),
),
form.NewFieldDatetime("DateTime").
WithOptions(
form.NewOption("label", "Datetime"),
),
form.NewFieldDatetimeLocal("DateTimeLocal").
WithOptions(
form.NewOption("label", "DateTime local"),
),
form.NewFieldTime("Time").
WithOptions(
form.NewOption("label", "Time"),
),
),
form.NewSubForm("Choices").
WithOptions(form.NewOption("label", "Choices")).
Add(
form.NewFieldChoice("Select").
WithOptions(
form.NewOption("choices", itemsChoices),
form.NewOption("label", "Select"),
).
WithConstraints(
validation.NewNotBlank(),
),
form.NewFieldChoice("SelectExpanded").
WithOptions(
form.NewOption("choices", itemsChoices),
form.NewOption("label", "Select (expanded)"),
form.NewOption("expanded", true),
),
form.NewFieldChoice("MultipleSelect").
WithSlice().
WithOptions(
form.NewOption("choices", itemsChoices),
form.NewOption("label", "Multiple select"),
form.NewOption("multiple", true),
).
WithConstraints(
validation.NewNotBlank(),
validation.NewLength().WithExact(2),
),
form.NewFieldChoice("MultipleSelectExpanded").
WithSlice().
WithOptions(
form.NewOption("choices", itemsChoices),
form.NewOption("label", "Multiple select (expanded)"),
form.NewOption("expanded", true),
form.NewOption("multiple", true),
),
),
form.NewFieldCollection("Collection").
WithOptions(
form.NewOption("label", "Collection"),
form.NewOption("form", form.NewForm(
form.NewFieldText("ValueA").
WithOptions(form.NewOption("label", "Value A")).
WithConstraints(
validation.NewNotBlank(),
),
form.NewFieldText("ValueB").
WithOptions(form.NewOption("label", "Value B")),
)),
),
form.NewFieldCsrf("_csrf_token").WithData("my-token"),
form.NewSubmit("submit").
WithOptions(
form.NewOption("attr", form.Attrs{
"class": "btn btn-primary",
}),
),
).
End().
WithOptions(
form.NewOption("help", "Form global help"),
).
WithMethod(http.MethodPost).
WithAction(action)
}
func NewTheme(value string) *Theme {
return &Theme{Value: value}
}
func CreateThemeSelectorForm() *form.Form {
choices := form.NewChoices([]map[string]string{
map[string]string{"value": "/", "label": "Html5"},
map[string]string{"value": "/bootstrap", "label": "Bootstrap5"},
})
choices.LabelBuilder = func(key int, item any) string {
return item.(map[string]string)["label"]
}
choices.ValueBuilder = func(key int, item any) string {
return item.(map[string]string)["value"]
}
return form.NewForm(
form.NewFieldChoice("value").
WithOptions(
form.NewOption("choices", choices),
form.NewOption("label", "Select a theme"),
form.NewOption("required", true),
form.NewOption("attr", form.Attrs{
"onchange": "document.location.href = this.value",
}),
),
).
End().
WithName("").
WithMethod(http.MethodGet)
}

View file

@ -1,119 +0,0 @@
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Demo of go-form with Bootstrap</title>
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.7/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-LN+7fdVzj6u52u30Kp6M/trliBMCMKTyK833zpbD+pXdCLuTusPj697FH4R/5mcr" crossorigin="anonymous">
<style>
fieldset {
border-radius: var(--bs-border-radius);
border: var(--bs-border-width) solid var(--bs-border-color);
padding: 10px;
}
form > div:not(:last-child), fieldset > div:not(:last-child) {
padding-bottom: 20px;
}
.gf-help {
font-style: italic;
color: #999;
}
</style>
</head>
<body>
<div class="container pt-2">
{{ form_widget (.styleForm.GetField "value") }}
<hr>
<h1>Demo of go-form with Bootstrap</h1>
<details>
<summary>Debug view</summary>
<div class="py-2">
<strong>Submitted:</strong>
{{ .isSubmitted }}
</div>
<div class="py-2">
<strong>Valid:</strong>
{{ .isValid }}
</div>
<details class="py-2">
<summary><strong>Dump of data</strong></summary>
<pre class="p-2">{{ .dump }}</pre>
</details>
<details class="py-2">
<summary><strong>Form as JSON</strong></summary>
<pre class="p-2">{{ .json }}</pre>
</details>
</details>
{{if .isValid}}
<div class="alert alert-success">The form is valid!</div>
{{else}}
<div class="alert alert-warning">The form is invalid!</div>
{{end}}
{{ form .form }}
</div>
<script>
const collections = document.querySelectorAll('*[data-prototype]')
const collectionItemAddToolBar = (item) => {
const toolbar = document.createElement('div')
const createBtn = () => {
const btn = document.createElement('button')
btn.textContent = '-'
btn.type = 'button'
btn.className = "btn btn-primary"
btn.addEventListener('click', () => {
item.remove()
})
return btn
}
toolbar.appendChild(createBtn())
item.querySelector('fieldset').appendChild(toolbar)
}
const collectionAddToolbar = (collection) => {
const container = collection.parentNode
const toolbar = document.createElement('div')
const createBtn = () => {
const btn = document.createElement('button')
btn.textContent = '+'
btn.type = 'button'
btn.className = "btn btn-primary"
btn.addEventListener('click', () => {
const form = collection.getAttribute('data-prototype')
.replace(/__name__/g, collection.children.length)
collection.insertAdjacentHTML("beforeend", form)
collectionItemAddToolBar(collection.lastChild)
})
return btn
}
toolbar.appendChild(createBtn())
container.appendChild(toolbar)
}
collections.forEach((collection) => {
collectionAddToolbar(collection)
for (let item of collection.children) {
collectionItemAddToolBar(item)
}
})
</script>
</body>
</html>

View file

@ -1,138 +0,0 @@
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Demo of go-form (pure HTML5 and Pico)</title>
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/@picocss/pico@2/css/pico.min.css">
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/@picocss/pico@2/css/pico.colors.min.css">
<meta name="viewport" content="width=device-width, initial-scale=1">
<meta name="color-scheme" content="light">
<style>
* {
font-size: 15px;
}
.p10 {
padding-top: 10px;
padding-bottom: 10px;
}
pre {
padding: 10px;
}
fieldset {
border: 1px solid var(--pico-form-element-border-color);
padding: 10px;
}
form > div:not(:last-child), fieldset > div:not(:last-child) {
padding-bottom: 20px;
}
.gf-errors {
color: var(--pico-form-element-invalid-border-color);
}
.gf-help {
font-style: italic;
color: var(--pico-form-element-placeholder-color);
}
</style>
</head>
<body class="container p10">
{{ form_widget (.styleForm.GetField "value") }}
<hr>
<h1>Demo of go-form (pure HTML5 and Pico)</h1>
<details class="p10">
<summary>Debug view</summary>
<div class="p10">
<strong>Submitted:</strong>
{{ .isSubmitted }}
</div>
<div class="p10">
<strong>Valid:</strong>
{{ .isValid }}
</div>
<details class="p10">
<summary><strong>Dump of data</strong></summary>
<pre>{{ .dump }}</pre>
</details>
<details class="p10">
<summary><strong>Form as JSON</strong></summary>
<pre>{{ .json }}</pre>
</details>
</div>
</details>
{{if .isValid}}
<p class="pico-color-green-500">The form is valid!</p>
{{else}}
<p class="pico-color-red-500">The form is invalid!</p>
{{end}}
{{ form .form }}
<script>
const collections = document.querySelectorAll('*[data-prototype]')
const collectionItemAddToolBar = (item) => {
const toolbar = document.createElement('div')
const createBtn = () => {
const btn = document.createElement('button')
btn.textContent = '-'
btn.type = 'button'
btn.addEventListener('click', () => {
item.remove()
})
return btn
}
toolbar.appendChild(createBtn())
item.querySelector('fieldset').appendChild(toolbar)
}
const collectionAddToolbar = (collection) => {
const container = collection.parentNode
const toolbar = document.createElement('div')
const createBtn = () => {
const btn = document.createElement('button')
btn.textContent = '+'
btn.type = 'button'
btn.addEventListener('click', () => {
const form = collection.getAttribute('data-prototype')
.replace(/__name__/g, collection.children.length)
collection.insertAdjacentHTML("beforeend", form)
collectionItemAddToolBar(collection.lastChild)
})
return btn
}
toolbar.appendChild(createBtn())
container.appendChild(toolbar)
}
collections.forEach((collection) => {
collectionAddToolbar(collection)
for (let item of collection.children) {
collectionItemAddToolBar(item)
}
})
</script>
</body>
</html>

View file

@ -1,423 +0,0 @@
package form
// @license GNU AGPL version 3 or any later version
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
import (
"fmt"
"maps"
"slices"
"strings"
"gitnet.fr/deblan/go-form/util"
"gitnet.fr/deblan/go-form/validation"
)
// Generic function for field.Validation
func DefaultFieldValidation(f *Field) bool {
if len(f.Children) > 0 {
isValid := true
for _, c := range f.Children {
c.ResetErrors()
isChildValid, errs := validation.Validate(c.Data, c.Constraints)
if len(errs) > 0 {
c.Errors = errs
}
isValid = isChildValid && isValid
for _, sc := range c.Children {
isValid = DefaultFieldValidation(sc) && isValid
}
}
return isValid
} else {
f.ResetErrors()
isValid, errs := validation.Validate(f.Data, f.Constraints)
if len(errs) > 0 {
f.Errors = errs
}
return isValid
}
}
// Field represents a field in a form
type Field struct {
Name string `json:"name"`
NamePrefix string `json:"name_prefix"`
Widget string `json:"widget"`
Data any `json:"-"`
Options []*Option `json:"options"`
Children []*Field `json:"children"`
Constraints []validation.Constraint `json:"-"`
Errors []validation.Error `json:"-"`
BeforeMount func(data any) (any, error) `json:"-"`
BeforeBind func(data any) (any, error) `json:"-"`
Validate func(f *Field) bool `json:"-"`
IsSlice bool `json:"is_slice"`
IsCollection bool `json:"is_collection"`
IsFixedName bool `json:"is_fixed_name"`
Form *Form `json:"-"`
Parent *Field `json:"-"`
}
// Generates a new field with default properties
// It should not be used directly but inside function like in form.NewFieldText
func NewField(name, widget string) *Field {
f := &Field{
Name: name,
IsFixedName: false,
Widget: widget,
Data: nil,
}
f.BeforeMount = func(data any) (any, error) {
return data, nil
}
f.BeforeBind = func(data any) (any, error) {
return data, nil
}
f.WithOptions(
NewOption("attr", Attrs{}),
NewOption("row_attr", Attrs{}),
NewOption("label_attr", Attrs{}),
NewOption("help_attr", Attrs{}),
)
f.Validate = DefaultFieldValidation
return f
}
func (f *Field) Copy() *Field {
return &Field{
Name: f.Name,
Form: f.Form,
Widget: f.Widget,
Options: f.Options,
Constraints: f.Constraints,
BeforeMount: f.BeforeMount,
BeforeBind: f.BeforeBind,
Validate: f.Validate,
IsSlice: f.IsSlice,
IsFixedName: f.IsFixedName,
}
}
// Checks if the field contains an option using its name
func (f *Field) HasOption(name string) bool {
for _, option := range f.Options {
if option.Name == name {
return true
}
}
return false
}
// Returns an option using its name
func (f *Field) GetOption(name string) *Option {
for _, option := range f.Options {
if option.Name == name {
return option
}
}
return nil
}
// Appends options to the field
func (f *Field) WithOptions(options ...*Option) *Field {
for _, option := range options {
if f.HasOption(option.Name) {
f.GetOption(option.Name).Value = option.Value
} else {
f.Options = append(f.Options, option)
}
}
return f
}
// Remove an option if exists
func (f *Field) RemoveOption(name string) *Field {
var options []*Option
for _, option := range f.Options {
if option.Name != name {
options = append(options, option)
}
}
f.Options = options
return f
}
// Sets data the field
func (f *Field) WithData(data any) *Field {
f.Data = data
return f
}
// Resets the field errors
func (f *Field) ResetErrors() *Field {
f.Errors = []validation.Error{}
return f
}
// Sets that the field represents a data slice
func (f *Field) WithSlice() *Field {
f.IsSlice = true
return f
}
// Sets that the field represents a collection
func (f *Field) WithCollection() *Field {
f.IsCollection = true
return f
}
// Sets that the name of the field is not computed
func (f *Field) WithFixedName() *Field {
f.IsFixedName = true
return f
}
// Appends constraints
func (f *Field) WithConstraints(constraints ...validation.Constraint) *Field {
for _, constraint := range constraints {
f.Constraints = append(f.Constraints, constraint)
}
return f
}
// Sets a transformer applied to the structure data before displaying it in a field
func (f *Field) WithBeforeMount(callback func(data any) (any, error)) *Field {
f.BeforeMount = callback
return f
}
// Sets a transformer applied to the data of a field before defining it in a structure
func (f *Field) WithBeforeBind(callback func(data any) (any, error)) *Field {
f.BeforeBind = callback
return f
}
// Appends children
func (f *Field) Add(children ...*Field) *Field {
for _, child := range children {
child.Parent = f
f.Children = append(f.Children, child)
}
return f
}
// Checks if the field contains a child using its name
func (f *Field) HasChild(name string) bool {
for _, child := range f.Children {
if name == child.Name {
return true
}
}
return false
}
// Returns a child using its name
func (f *Field) GetChild(name string) *Field {
var result *Field
for _, child := range f.Children {
if name == child.Name {
result = child
break
}
}
return result
}
// Computes the name of the field
func (f *Field) GetName() string {
var name string
if f.IsFixedName {
return f.Name
}
if f.Form != nil && f.Form.Name != "" {
name = fmt.Sprintf("%s%s[%s]", f.Form.Name, f.NamePrefix, f.Name)
} else if f.Parent != nil {
name = fmt.Sprintf("%s%s[%s]", f.Parent.GetName(), f.NamePrefix, f.Name)
} else {
name = f.Name
}
return name
}
// Computes the id of the field
func (f *Field) GetId() string {
name := f.GetName()
name = strings.ReplaceAll(name, "[", "-")
name = strings.ReplaceAll(name, "]", "")
name = strings.ToLower(name)
return name
}
// Populates the field with data
func (f *Field) Mount(data any) error {
data, err := f.BeforeMount(data)
if err != nil {
return err
}
if len(f.Children) == 0 {
f.Data = data
return nil
}
props, err := util.InspectStruct(data)
if err != nil {
return err
}
for key, value := range props {
if f.HasChild(key) {
err = f.GetChild(key).Mount(value)
if err != nil {
return err
}
}
}
return nil
}
// Bind the data into the given map
func (f *Field) Bind(data map[string]any, key *string, parentIsSlice bool) error {
if len(f.Children) == 0 {
v, err := f.BeforeBind(f.Data)
if err != nil {
return err
}
if key != nil {
data[*key] = v
} else {
data[f.Name] = v
}
return nil
}
data[f.Name] = make(map[string]any)
for _, child := range f.Children {
child.Bind(data[f.Name].(map[string]any), key, f.IsCollection)
}
if f.IsCollection {
var nextData []any
values := data[f.Name].(map[string]any)
var keys []string
for key, _ := range values {
keys = append(keys, key)
}
slices.Sort(keys)
for _, key := range keys {
for valueKey, value := range values {
if valueKey == key {
nextData = append(nextData, value)
}
}
}
data[f.Name] = nextData
}
return nil
}
// Generates a tree of errors
func (f *Field) ErrorsTree(tree map[string]any, key *string) {
var index string
if key != nil {
index = *key
} else {
index = f.Name
}
if len(f.Children) == 0 {
if len(f.Errors) > 0 {
tree[index] = map[string]any{
"meta": map[string]any{
"id": f.GetId(),
"name": f.Name,
"formName": f.GetName(),
},
"errors": f.Errors,
}
}
} else {
errors := make(map[string]any)
for _, child := range f.Children {
if len(child.Errors) > 0 {
child.ErrorsTree(errors, &child.Name)
}
}
if len(errors) > 0 {
tree[index] = map[string]any{
"meta": map[string]any{
"id": f.GetId(),
"name": f.Name,
"formName": f.GetName(),
},
"errors": []validation.Error{},
"children": slices.Collect(maps.Values(errors)),
}
}
}
}

View file

@ -1,48 +0,0 @@
package form
// @license GNU AGPL version 3 or any later version
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
import (
"github.com/spf13/cast"
)
// Generates an input[type=checkbox]
func NewFieldCheckbox(name string) *Field {
f := NewField(name, "input").
WithOptions(NewOption("type", "checkbox")).
WithBeforeMount(func(data any) (any, error) {
switch data.(type) {
case string:
data = data == "1"
case bool:
return data, nil
}
return cast.ToInt(data), nil
}).
WithBeforeBind(func(data any) (any, error) {
switch data.(type) {
case string:
return data == "1", nil
case bool:
return data, nil
}
return cast.ToBool(data), nil
})
return f
}

View file

@ -1,200 +0,0 @@
package form
// @license GNU AGPL version 3 or any later version
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
import (
"encoding/json"
"reflect"
"github.com/spf13/cast"
"gitnet.fr/deblan/go-form/validation"
)
type Choice struct {
Value string
Label string
Data any
}
func (c Choice) Match(value string) bool {
return c.Value == value
}
type Choices struct {
Data any `json:"data"`
ValueBuilder func(key int, item any) string `json:"-"`
LabelBuilder func(key int, item any) string `json:"-"`
}
func (c *Choices) Match(f *Field, value string) bool {
if f.Data == nil {
return false
}
if f.IsSlice {
v := reflect.ValueOf(f.Data)
for key, _ := range c.GetChoices() {
for i := 0; i < v.Len(); i++ {
item := v.Index(i).Interface()
switch item.(type) {
case string:
if item == value {
return true
}
default:
if c.ValueBuilder(key, item) == value {
return true
}
}
}
}
return false
}
return f.Data == value
}
func (c *Choices) WithValueBuilder(builder func(key int, item any) string) *Choices {
c.ValueBuilder = builder
return c
}
func (c *Choices) WithLabelBuilder(builder func(key int, item any) string) *Choices {
c.LabelBuilder = builder
return c
}
func (c *Choices) GetChoices() []Choice {
choices := []Choice{}
v := reflect.ValueOf(c.Data)
switch v.Kind() {
case reflect.Slice, reflect.Array, reflect.String, reflect.Map:
for i := 0; i < v.Len(); i++ {
choices = append(choices, Choice{
Value: c.ValueBuilder(i, v.Index(i).Interface()),
Label: c.LabelBuilder(i, v.Index(i).Interface()),
Data: v.Index(i).Interface(),
})
}
}
return choices
}
func (c Choices) MarshalJSON() ([]byte, error) {
var choices []map[string]string
v := reflect.ValueOf(c.Data)
switch v.Kind() {
case reflect.Slice, reflect.Array, reflect.String, reflect.Map:
for i := 0; i < v.Len(); i++ {
choices = append(choices, map[string]string{
"value": c.ValueBuilder(i, v.Index(i).Interface()),
"label": c.LabelBuilder(i, v.Index(i).Interface()),
})
}
}
return json.Marshal(choices)
}
// Generates an instance of Choices
func NewChoices(items any) *Choices {
builder := func(key int, item any) string {
return cast.ToString(key)
}
choices := Choices{
ValueBuilder: builder,
LabelBuilder: builder,
Data: items,
}
return &choices
}
// Generates inputs (checkbox or radio) or selects
func NewFieldChoice(name string) *Field {
f := NewField(name, "choice").
WithOptions(
NewOption("choices", &Choices{}),
NewOption("expanded", false),
NewOption("multiple", false),
NewOption("empty_choice_label", "None"),
)
f.Validate = func(field *Field) bool {
isValid := field.Validate(field)
if len(validation.NewNotBlank().Validate(field.Data)) == 0 {
choices := field.GetOption("choices").Value.(*Choices)
isValidChoice := false
for _, choice := range choices.GetChoices() {
if choices.Match(field, choice.Value) {
isValidChoice = true
}
}
if !isValidChoice {
field.Errors = append(field.Errors, validation.Error("This value is not valid."))
isValid = false
}
}
return isValid
}
f.WithBeforeBind(func(data any) (any, error) {
choices := f.GetOption("choices").Value.(*Choices)
switch data.(type) {
case string:
v := data.(string)
for _, c := range choices.GetChoices() {
if c.Match(v) {
return c.Data, nil
}
}
case []string:
v := reflect.ValueOf(data)
var res []interface{}
for _, choice := range choices.GetChoices() {
for i := 0; i < v.Len(); i++ {
item := v.Index(i).Interface().(string)
if choice.Match(item) {
res = append(res, choice.Data)
}
}
}
return res, nil
}
return data, nil
})
return f
}

View file

@ -1,80 +0,0 @@
package form
// @license GNU AGPL version 3 or any later version
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
import (
"fmt"
"reflect"
)
// Generates a sub form
func NewFieldCollection(name string) *Field {
f := NewField(name, "collection").
WithOptions(
NewOption("allow_add", true),
NewOption("allow_delete", true),
NewOption("form", nil),
).
WithCollection()
f.WithBeforeMount(func(data any) (any, error) {
if opt := f.GetOption("form"); opt != nil {
if src, ok := opt.Value.(*Form); ok {
src.Name = f.GetName()
t := reflect.TypeOf(data)
switch t.Kind() {
case reflect.Slice:
slice := reflect.ValueOf(data)
for i := 0; i < slice.Len(); i++ {
name := fmt.Sprintf("%d", i)
value := slice.Index(i).Interface()
if f.HasChild(name) {
f.GetChild(name).Mount(value)
} else {
form := src.Copy()
form.Mount(value)
field := f.Copy()
field.Widget = "sub_form"
field.Name = name
field.Add(form.Fields...)
field.
RemoveOption("form").
RemoveOption("label")
for _, c := range field.Children {
c.NamePrefix = fmt.Sprintf("[%d]", i)
}
f.Add(field)
}
}
}
}
}
return data, nil
})
return f
}
func NewCollection(name string) *Field {
return NewFieldCollection(name)
}

View file

@ -1,84 +0,0 @@
package form
// @license GNU AGPL version 3 or any later version
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
import (
"github.com/spf13/cast"
)
// Generates an input[type=text]
func NewFieldText(name string) *Field {
f := NewField(name, "input").
WithOptions(NewOption("type", "text"))
return f
}
// Generates an input[type=number] with default transformers
func NewFieldNumber(name string) *Field {
f := NewField(name, "input").
WithOptions(NewOption("type", "number")).
WithBeforeBind(func(data any) (any, error) {
return cast.ToFloat64(data), nil
})
return f
}
// Generates an input[type=email]
func NewFieldMail(name string) *Field {
f := NewField(name, "input").
WithOptions(NewOption("type", "email"))
return f
}
// Generates an input[type=range]
func NewFieldRange(name string) *Field {
f := NewField(name, "input").
WithOptions(NewOption("type", "range")).
WithBeforeBind(func(data any) (any, error) {
return cast.ToFloat64(data), nil
})
return f
}
// Generates an input[type=password]
func NewFieldPassword(name string) *Field {
f := NewField(name, "input").
WithOptions(NewOption("type", "password"))
return f
}
// Generates an input[type=hidden]
func NewFieldHidden(name string) *Field {
f := NewField(name, "input").
WithOptions(NewOption("type", "hidden"))
return f
}
// Generates an input[type=submit]
func NewSubmit(name string) *Field {
f := NewField(name, "input").
WithOptions(NewOption("type", "submit"))
f.Data = "Submit"
return f
}

View file

@ -1,23 +0,0 @@
package form
// @license GNU AGPL version 3 or any later version
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
func NewFieldCsrf(name string) *Field {
f := NewFieldHidden(name).
WithFixedName()
return f
}

View file

@ -1,109 +0,0 @@
package form
// @license GNU AGPL version 3 or any later version
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
import (
"fmt"
"time"
)
func DateBeforeMount(data any, format string) (any, error) {
if data == nil {
return nil, nil
}
switch data.(type) {
case string:
return data, nil
case time.Time:
return data.(time.Time).Format(format), nil
case *time.Time:
v := data.(*time.Time)
if v != nil {
return v.Format(format), nil
}
}
return nil, nil
}
// Generates an input[type=date] with default transformers
func NewFieldDate(name string) *Field {
f := NewField(name, "input").
WithOptions(NewOption("type", "date")).
WithBeforeMount(func(data any) (any, error) {
return DateBeforeMount(data, "2006-01-02")
}).
WithBeforeBind(func(data any) (any, error) {
return time.Parse(time.DateOnly, data.(string))
})
return f
}
// Generates an input[type=datetime] with default transformers
func NewFieldDatetime(name string) *Field {
f := NewField(name, "input").
WithOptions(NewOption("type", "datetime")).
WithBeforeMount(func(data any) (any, error) {
return DateBeforeMount(data, "2006-01-02 15:04")
}).
WithBeforeBind(func(data any) (any, error) {
return time.Parse("2006-01-02T15:04", data.(string))
})
return f
}
// Generates an input[type=datetime-local] with default transformers
func NewFieldDatetimeLocal(name string) *Field {
f := NewField(name, "input").
WithOptions(
NewOption("type", "datetime-local"),
).
WithBeforeMount(func(data any) (any, error) {
return DateBeforeMount(data, "2006-01-02 15:04")
}).
WithBeforeBind(func(data any) (any, error) {
a, b := time.Parse("2006-01-02T15:04", data.(string))
return a, b
})
return f
}
// Generates an input[type=time] with default transformers
func NewFieldTime(name string) *Field {
f := NewField(name, "input").
WithOptions(NewOption("type", "time")).
WithBeforeMount(func(data any) (any, error) {
return DateBeforeMount(data, "15:04")
}).
WithBeforeBind(func(data any) (any, error) {
if data != nil {
v := data.(string)
if len(v) > 0 {
return time.Parse(time.TimeOnly, fmt.Sprintf("%s:00", v))
}
}
return nil, nil
})
return f
}

View file

@ -1,27 +0,0 @@
package form
// @license GNU AGPL version 3 or any later version
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
// Generates a sub form
func NewFieldSubForm(name string) *Field {
f := NewField(name, "sub_form")
return f
}
func NewSubForm(name string) *Field {
return NewFieldSubForm(name)
}

View file

@ -1,21 +0,0 @@
package form
// @license GNU AGPL version 3 or any later version
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
// Generates a textarea
func NewFieldTextarea(name string) *Field {
return NewField(name, "textarea")
}

View file

@ -1,321 +0,0 @@
package form
// @license GNU AGPL version 3 or any later version
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
import (
"encoding/json"
"io/ioutil"
"maps"
"net/http"
"net/url"
"slices"
"strings"
"github.com/mitchellh/mapstructure"
"gitnet.fr/deblan/go-form/util"
"gitnet.fr/deblan/go-form/validation"
)
// Field represents a form
type Form struct {
Fields []*Field `json:"children"`
GlobalFields []*Field `json:"-"`
Errors []validation.Error `json:"-"`
Method string `json:"method"`
JsonRequest bool `json:"json_request"`
Action string `json:"action"`
Name string `json:"name"`
Options []*Option `json:"options"`
RequestData *url.Values `json:"-"`
}
// Generates a new form with default properties
func NewForm(fields ...*Field) *Form {
f := new(Form)
f.Method = "POST"
f.Name = "form"
f.Add(fields...)
f.WithOptions(
NewOption("attr", Attrs{}),
NewOption("help_attr", Attrs{}),
)
return f
}
// Checks if the form contains an option using its name
func (f *Form) HasOption(name string) bool {
for _, option := range f.Options {
if option.Name == name {
return true
}
}
return false
}
// Returns an option using its name
func (f *Form) GetOption(name string) *Option {
for _, option := range f.Options {
if option.Name == name {
return option
}
}
return nil
}
// Resets the form errors
func (f *Form) ResetErrors() *Form {
f.Errors = []validation.Error{}
return f
}
// Appends children
func (f *Form) Add(fields ...*Field) {
for _, field := range fields {
field.Form = f
f.Fields = append(f.Fields, field)
}
}
// Configures its children deeply
// This function must be called after adding all fields
func (f *Form) End() *Form {
f.GlobalFields = []*Field{}
for _, c := range f.Fields {
f.AddGlobalField(c)
}
return f
}
// Configures its children deeply
func (f *Form) AddGlobalField(field *Field) {
f.GlobalFields = append(f.GlobalFields, field)
for _, c := range field.Children {
f.AddGlobalField(c)
}
}
// Checks if the form contains a child using its name
func (f *Form) HasField(name string) bool {
for _, field := range f.Fields {
if name == field.Name {
return true
}
}
return false
}
// Returns a child using its name
func (f *Form) GetField(name string) *Field {
var result *Field
for _, field := range f.Fields {
if name == field.Name {
result = field
break
}
}
return result
}
// Sets the method of the format (http.MethodPost, http.MethodGet, ...)
func (f *Form) WithMethod(v string) *Form {
f.Method = v
return f
}
// Sets the name of the form (used to compute name of fields)
func (f *Form) WithName(v string) *Form {
f.Name = v
return f
}
// Sets the action of the form (eg: "/")
func (f *Form) WithAction(v string) *Form {
f.Action = v
return f
}
// Appends options to the form
func (f *Form) WithOptions(options ...*Option) *Form {
for _, option := range options {
if f.HasOption(option.Name) {
f.GetOption(option.Name).Value = option.Value
} else {
f.Options = append(f.Options, option)
}
}
return f
}
// Checks the a form is valid
func (f *Form) IsValid() bool {
isValid := true
f.ResetErrors()
for _, field := range f.Fields {
fieldIsValid := field.Validate(field)
isValid = isValid && fieldIsValid
}
return isValid
}
// Copies datas from a struct to the form
func (f *Form) Mount(data any) error {
props, err := util.InspectStruct(data)
if err != nil {
return err
}
for key, value := range props {
if f.HasField(key) {
err = f.GetField(key).Mount(value)
if err != nil {
return err
}
}
}
return nil
}
func (f *Form) WithJsonRequest() *Form {
f.JsonRequest = true
return f
}
// Copies datas from the form to a struct
func (f *Form) Bind(data any) error {
toBind := make(map[string]any)
for _, field := range f.Fields {
field.Bind(toBind, nil, false)
}
return mapstructure.Decode(toBind, data)
}
// Processes a request
func (f *Form) HandleRequest(req *http.Request) {
var data url.Values
if f.JsonRequest {
body, err := ioutil.ReadAll(req.Body)
if err != nil {
return
}
mapping := make(map[string]any)
err = json.Unmarshal(body, &mapping)
if err != nil {
return
}
data = url.Values{}
util.MapToUrlValues(&data, f.Name, mapping)
} else {
switch f.Method {
case "GET":
data = req.URL.Query()
default:
req.ParseForm()
data = req.Form
}
}
isSubmitted := false
type collectionData map[string]any
for _, c := range f.GlobalFields {
if c.IsCollection {
collection := util.NewCollection()
for key, _ := range data {
if strings.HasPrefix(key, c.GetName()) {
root := strings.Replace(key, c.GetName(), "", 1)
indexes := util.ExtractDataIndexes(root)
collection.Add(indexes, data.Get(key))
}
}
c.Mount(collection.Slice())
} else if data.Has(c.GetName()) {
isSubmitted = true
if c.IsSlice {
c.Mount(data[c.GetName()])
} else {
c.Mount(data.Get(c.GetName()))
}
}
}
if isSubmitted {
f.RequestData = &data
}
}
// Checks if the form is submitted
func (f *Form) IsSubmitted() bool {
return f.RequestData != nil
}
// Generates a tree of errors
func (f *Form) ErrorsTree() map[string]any {
errors := make(map[string]any)
for _, field := range f.Fields {
field.ErrorsTree(errors, nil)
}
return map[string]any{
"errors": f.Errors,
"children": slices.Collect(maps.Values(errors)),
}
}
func (f *Form) Copy() *Form {
var fields []*Field
for _, i := range f.Fields {
f := *i
fields = append(fields, &f)
}
return &Form{
Fields: fields,
}
}

View file

@ -1,78 +0,0 @@
package form
import "strings"
// @license GNU AGPL version 3 or any later version
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
type Option struct {
Name string `json:"name"`
Value any `json:"value"`
}
func NewOption(name string, value any) *Option {
return &Option{
Name: name,
Value: value,
}
}
func (o *Option) AsBool() bool {
return o.Value.(bool)
}
func (o *Option) AsString() string {
return o.Value.(string)
}
func (o *Option) AsAttrs() Attrs {
return o.Value.(Attrs)
}
type Attrs map[string]string
func (a Attrs) Append(name, value string) {
v, ok := a[name]
if !ok {
v = value
} else {
v = value + " " + v
}
a[name] = v
}
func (a Attrs) Prepend(name, value string) {
v, ok := a[name]
if !ok {
v = value
} else {
v += " " + value
}
a[name] = v
}
func (a Attrs) Remove(name, value string) {
v, ok := a[name]
if !ok {
v = strings.ReplaceAll(v, value, "")
}
a[name] = v
}

10
go.mod
View file

@ -1,11 +1,5 @@
module gitnet.fr/deblan/go-form
module gitnet.fr/deblan/go-form-doc
go 1.23.0
require (
github.com/iancoleman/strcase v0.3.0
github.com/mitchellh/mapstructure v1.5.0
github.com/spf13/cast v1.9.2
github.com/yassinebenaid/godump v0.11.1
maragu.dev/gomponents v1.1.0
)
require github.com/imfing/hextra v0.9.7 // indirect

22
go.sum
View file

@ -1,20 +1,2 @@
github.com/frankban/quicktest v1.14.6 h1:7Xjx+VpznH+oBnejlPUj8oUpdxnVs4f8XU8WnHkI4W8=
github.com/frankban/quicktest v1.14.6/go.mod h1:4ptaffx2x8+WTWXmUCuVU6aPUX1/Mz7zb5vbUoiM6w0=
github.com/google/go-cmp v0.5.9 h1:O2Tfq5qg4qc4AmwVlvv0oLiVAGB7enBSJ2x2DqQFi38=
github.com/google/go-cmp v0.5.9/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
github.com/iancoleman/strcase v0.3.0 h1:nTXanmYxhfFAMjZL34Ov6gkzEsSJZ5DbhxWjvSASxEI=
github.com/iancoleman/strcase v0.3.0/go.mod h1:iwCmte+B7n89clKwxIoIXy/HfoL7AsD47ZCWhYzw7ho=
github.com/kr/pretty v0.3.1 h1:flRD4NNwYAUpkphVc1HcthR4KEIFJ65n8Mw5qdRn3LE=
github.com/kr/pretty v0.3.1/go.mod h1:hoEshYVHaxMs3cyo3Yncou5ZscifuDolrwPKZanG3xk=
github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
github.com/mitchellh/mapstructure v1.5.0 h1:jeMsZIYE/09sWLaz43PL7Gy6RuMjD2eJVyuac5Z2hdY=
github.com/mitchellh/mapstructure v1.5.0/go.mod h1:bFUtVrKA4DC2yAKiSyO/QUcy7e+RRV2QTWOzhPopBRo=
github.com/rogpeppe/go-internal v1.9.0 h1:73kH8U+JUqXU8lRuOHeVHaa/SZPifC7BkcraZVejAe8=
github.com/rogpeppe/go-internal v1.9.0/go.mod h1:WtVeX8xhTBvf0smdhujwtBcq4Qrzq/fJaraNFVN+nFs=
github.com/spf13/cast v1.9.2 h1:SsGfm7M8QOFtEzumm7UZrZdLLquNdzFYfIbEXntcFbE=
github.com/spf13/cast v1.9.2/go.mod h1:jNfB8QC9IA6ZuY2ZjDp0KtFO2LZZlg4S/7bzP6qqeHo=
github.com/yassinebenaid/godump v0.11.1 h1:SPujx/XaYqGDfmNh7JI3dOyCUVrG0bG2duhO3Eh2EhI=
github.com/yassinebenaid/godump v0.11.1/go.mod h1:dc/0w8wmg6kVIvNGAzbKH1Oa54dXQx8SNKh4dPRyW44=
maragu.dev/gomponents v1.1.0 h1:iCybZZChHr1eSlvkWp/JP3CrZGzctLudQ/JI3sBcO4U=
maragu.dev/gomponents v1.1.0/go.mod h1:oEDahza2gZoXDoDHhw8jBNgH+3UR5ni7Ur648HORydM=
github.com/imfing/hextra v0.9.7 h1:Zg5n24us36Bn/S/5mEUPkRW6uwE6vHHEqWSgN0bPXaM=
github.com/imfing/hextra v0.9.7/go.mod h1:cEfel3lU/bSx7lTE/+uuR4GJaphyOyiwNR3PTqFTXpI=

104
hugo.yaml Normal file
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baseURL: https://deblan.gitnet.page/go-form/
languageCode: en-us
title: deblan/go-form
outputs:
home: [HTML]
page: [HTML]
section: [HTML, RSS]
enableRobotsTXT: true
hasCJKLanguage: true
enableInlineShortcodes: true
menu:
main:
- identifier: documentation
name: Documentation
pageRef: /docs
weight: 1
- name: Search
weight: 6
params:
type: search
- name: GitHub
weight: 7
url: "https://gitnet.fr/deblan/go-form"
params:
icon: github
sidebar: []
# - identifier: installation
# name: Installation
# weight: 2
params:
description: Creating and processing HTML forms in golang
navbar:
displayTitle: true
displayLogo: true
logo:
path: images/logo.svg
dark: images/logo-dark.svg
# width: 40
# height: 20
# link: /
width: full
page:
width: full
theme:
# light | dark | system
default: system
displayToggle: true
footer:
enable: true
displayCopyright: false
displayPoweredBy: false
width: normal
# Display the last modification date
displayUpdatedDate: true
dateFormat: "January 2, 2006"
search:
enable: true
type: flexsearch
flexsearch:
# index page by: content | summary | heading | title
index: content
# full | forward | reverse | strict
# https://github.com/nextapps-de/flexsearch/#tokenizer-prefix-search
tokenize: forward
toc:
displayTags: true
highlight:
copy:
enable: true
# hover | always
display: hover
markup:
highlight:
noClasses: false
goldmark:
renderer:
unsafe: true
extensions:
passthrough:
delimiters:
block: [['\[', '\]'], ['$$', '$$']]
inline: [['\(', '\)']]
enable: true
enableInlineShortcodes: true
module:
imports:
- path: github.com/imfing/hextra

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@ -0,0 +1 @@
<script src="{{ "js/custom.js"|absURL }}"></script>

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@ -0,0 +1,28 @@
{{ $id := md5 .Inner }} {{ .Inner }}
<details>
<summary class="hugo-goplay-summary">Test me</summary>
<textarea readonly class="hugo-goplay-textarea" id="textarea-{{ $id }}"></textarea>
<div id="{{ $id }}" class="hugo-goplay-result"></div>
<div class="hugo-goplay-toolbox">
<button role="button" class="hugo-goplay-button" id="hugo-goplay-tool-{{ $id }}-run">
Run
</button>
<button role="button" class="hugo-goplay-button" id="hugo-goplay-tool-{{ $id }}-try">
Try it yourself &#8599;
</button>
<button role="button" class="hugo-goplay-button" id="hugo-goplay-tool-{{ $id }}-share">
Share &#8599;
</button>
</div>
</details>
<script type="module">
import { GoPlayProxy } from "https://unpkg.com/@ggicci/goplay/dist/index.js";
createPlaygroundWithAutoImportMail(
new GoPlayProxy("https://gp.deblan.gitnet.page"),
"{{ $id }}",
"{{ .Inner }}"
)
</script>

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@ -0,0 +1,28 @@
{{ $id := md5 .Inner }} {{ .Inner }}
<details>
<summary class="hugo-goplay-summary">Test me</summary>
<textarea readonly class="hugo-goplay-textarea" id="textarea-{{ $id }}"></textarea>
<div id="{{ $id }}" class="hugo-goplay-result"></div>
<div class="hugo-goplay-toolbox">
<button role="button" class="hugo-goplay-button" id="hugo-goplay-tool-{{ $id }}-run">
Run
</button>
<button role="button" class="hugo-goplay-button" id="hugo-goplay-tool-{{ $id }}-try">
Try it yourself &#8599;
</button>
<button role="button" class="hugo-goplay-button" id="hugo-goplay-tool-{{ $id }}-share">
Share &#8599;
</button>
</div>
</details>
<script type="module">
import { GoPlayProxy } from "https://unpkg.com/@ggicci/goplay/dist/index.js";
createFieldPlayground(
new GoPlayProxy("https://gp.deblan.gitnet.page"),
"{{ $id }}",
"{{ .Inner }}"
)
</script>

126
static/js/custom.js Normal file
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function normalizeCode(code) {
return code
.trim()
.replace(/^```go/, '')
.replace(/^```/, '')
.replace(/```$/, '')
.replace(/<([^>]+)>/g, '')
.trim()
}
function updatePlaygroundView(goplay, id, code) {
const textarea = document.getElementById(`textarea-${id}`)
textarea.value = code
textarea.style.height = textarea.scrollHeight + 'px';
textarea.style.overflowY = 'hidden';
textarea.addEventListener('input', function() {
this.style.height = 'auto';
this.style.height = this.scrollHeight + 'px';
})
const toolRun = document.getElementById(`hugo-goplay-tool-${id}-run`)
const toolTry = document.getElementById(`hugo-goplay-tool-${id}-try`)
const toolShare = document.getElementById(`hugo-goplay-tool-${id}-share`)
toolRun.addEventListener('click', () => {
const parent = document.getElementById(id)
const pre = document.createElement('pre')
const container = document.createElement('code')
container.classList.add('text')
pre.appendChild(container)
parent.replaceChildren(pre)
goplay.renderCompile(container, textarea.value);
});
[toolTry, toolShare].forEach((v) => {
v.addEventListener('click', async () => {
const shareUrl = await goplay.share(code)
window.open(shareUrl, '_blank').focus();
})
});
}
function createFieldPlayground(goplay, id, code) {
code = createFieldPlaygroundCode(code)
updatePlaygroundView(goplay, id, code)
}
function createPlaygroundWithAutoImportMail(goplay, id, code) {
let lines = normalizeCode(code).split("\n")
let results = ["package main", ""]
let imports = []
let body = []
lines.forEach((line) => {
if (line.substr(0, 7) === '@import') {
imports.push(' ' + line.replace('@import', '').trim())
} else {
body.push(" " + line)
}
})
if (imports.length > 0) {
results.push("import (")
imports.forEach((v) => {
results.push(v)
})
results.push(")", "")
}
results.push("func main() {")
body.forEach((v, i) => {
if (i == 0 && v.trim() == "") {
return
}
results.push(v)
})
results.push("}", "")
updatePlaygroundView(goplay, id, results.join("\n"))
}
function createFieldPlaygroundCode(code) {
code = normalizeCode(code)
let lines = code.split("\n");
for (let i in lines) {
lines[i] = [' ', lines[i]].join('')
}
code = lines.join("\n");
return `package main
import (
"fmt"
"html/template"
"strings"
"gitnet.fr/deblan/go-form/form"
"gitnet.fr/deblan/go-form/theme"
)
func main() {
${code}
r(form.NewForm(field))
}
func r(f *form.Form) {
render := theme.NewRenderer(theme.Html5)
tpl, _ := template.New("example").Funcs(render.FuncMap()).Parse(\`{{ form_widget (.Form.GetField "Foo") }}\`)
b := new(strings.Builder)
tpl.Execute(b, map[string]any{"Form": f})
fmt.Println(b.String())
}`
}

View file

@ -1,134 +0,0 @@
package theme
import (
"gitnet.fr/deblan/go-form/form"
"gitnet.fr/deblan/go-form/validation"
. "maragu.dev/gomponents"
. "maragu.dev/gomponents/html"
)
// @license GNU AGPL version 3 or any later version
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
var Bootstrap5 = ExtendTheme(Html5, func() map[string]RenderFunc {
theme := make(map[string]RenderFunc)
theme["form_help"] = func(parent map[string]RenderFunc, args ...any) Node {
form := args[0].(*form.Form)
form.GetOption("help_attr").AsAttrs().Append("class", "form-text")
return parent["base_form_help"](parent, form)
}
theme["form_widget_help"] = func(parent map[string]RenderFunc, args ...any) Node {
field := args[0].(*form.Field)
field.GetOption("help_attr").AsAttrs().Append("class", "form-text")
return parent["base_form_widget_help"](parent, field)
}
theme["input"] = func(parent map[string]RenderFunc, args ...any) Node {
field := args[0].(*form.Field)
fieldType := field.GetOption("type").AsString()
var class string
if fieldType == "checkbox" || fieldType == "radio" {
class = "form-check-input"
} else if fieldType == "range" {
class = "form-range"
} else if fieldType == "button" || fieldType == "submit" || fieldType == "reset" {
class = "btn"
} else {
class = "form-control"
}
field.GetOption("attr").AsAttrs().Append("class", class)
return parent["base_input"](parent, field)
}
theme["form_label"] = func(parent map[string]RenderFunc, args ...any) Node {
field := args[0].(*form.Field)
var class string
if field.Widget == "choice" && field.HasOption("expanded") && field.GetOption("expanded").AsBool() {
class = "form-check-label"
} else {
class = "form-label"
}
field.GetOption("label_attr").AsAttrs().Append("class", class)
return parent["base_form_label"](parent, field)
}
theme["choice"] = func(parent map[string]RenderFunc, args ...any) Node {
field := args[0].(*form.Field)
if !field.HasOption("expanded") || !field.GetOption("expanded").AsBool() {
field.GetOption("attr").AsAttrs().Append("class", "form-control")
}
return parent["base_choice"](parent, field)
}
theme["choice_expanded_item"] = func(parent map[string]RenderFunc, args ...any) Node {
return Div(Class("form-check"), args[0].(Node))
}
theme["textarea"] = func(parent map[string]RenderFunc, args ...any) Node {
field := args[0].(*form.Field)
field.GetOption("attr").AsAttrs().Append("class", "form-control")
return parent["base_textarea"](parent, field)
}
theme["form_row"] = func(parent map[string]RenderFunc, args ...any) Node {
field := args[0].(*form.Field)
if field.HasOption("type") {
fieldType := field.GetOption("type").AsString()
if fieldType == "checkbox" || fieldType == "radio" {
field.GetOption("row_attr").AsAttrs().Append("class", "form-check")
}
}
return parent["base_form_row"](parent, field)
}
theme["errors"] = func(parent map[string]RenderFunc, args ...any) Node {
errors := args[0].([]validation.Error)
var result []Node
for _, v := range errors {
result = append(result, Text(string(v)))
result = append(result, Br())
}
return Div(
Class("invalid-feedback d-block"),
Group(result),
)
}
return theme
})

View file

@ -1,466 +0,0 @@
package theme
import (
"bytes"
"fmt"
"github.com/spf13/cast"
"gitnet.fr/deblan/go-form/form"
"gitnet.fr/deblan/go-form/validation"
. "maragu.dev/gomponents"
. "maragu.dev/gomponents/html"
)
// @license GNU AGPL version 3 or any later version
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
var Html5 = CreateTheme(func() map[string]RenderFunc {
theme := make(map[string]RenderFunc)
theme["attributes"] = func(parent map[string]RenderFunc, args ...any) Node {
var result []Node
for i, v := range args[0].(form.Attrs) {
result = append(result, Attr(i, v))
}
return Group(result)
}
theme["form_attributes"] = func(parent map[string]RenderFunc, args ...any) Node {
form := args[0].(*form.Form)
if !form.HasOption("attr") {
return Raw("")
}
return parent["attributes"](parent, form.GetOption("attr").AsAttrs())
}
theme["errors"] = func(parent map[string]RenderFunc, args ...any) Node {
errors := args[0].([]validation.Error)
var result []Node
for _, v := range errors {
result = append(result, Li(Text(string(v))))
}
return Ul(
Class("gf-errors"),
Group(result),
)
}
theme["form_errors"] = func(parent map[string]RenderFunc, args ...any) Node {
form := args[0].(*form.Form)
return If(
len(form.Errors) > 0,
parent["errors"](parent, form.Errors),
)
}
theme["form_widget_errors"] = func(parent map[string]RenderFunc, args ...any) Node {
field := args[0].(*form.Field)
return If(
len(field.Errors) > 0,
parent["errors"](parent, field.Errors),
)
}
theme["help"] = func(parent map[string]RenderFunc, args ...any) Node {
help := args[0].(string)
var extra Node
if len(help) == 0 {
return Raw("")
}
if len(args) == 2 {
extra = args[1].(Node)
}
return Div(
Class("gf-help"),
Text(help),
extra,
)
}
theme["form_help"] = func(parent map[string]RenderFunc, args ...any) Node {
form := args[0].(*form.Form)
if !form.HasOption("help") {
return Raw("")
}
return parent["help"](
parent,
form.GetOption("help").AsString(),
parent["attributes"](parent, form.GetOption("help_attr").AsAttrs()),
)
}
theme["form_widget_help"] = func(parent map[string]RenderFunc, args ...any) Node {
field := args[0].(*form.Field)
if !field.HasOption("help") {
return Raw("")
}
return parent["help"](
parent,
field.GetOption("help").AsString(),
parent["attributes"](parent, field.GetOption("help_attr").AsAttrs()),
)
}
theme["label_attributes"] = func(parent map[string]RenderFunc, args ...any) Node {
field := args[0].(*form.Field)
return parent["attributes"](parent, field.GetOption("label_attr").AsAttrs())
}
theme["form_label"] = func(parent map[string]RenderFunc, args ...any) Node {
field := args[0].(*form.Field)
if !field.HasOption("label") {
return Raw("")
}
label := field.GetOption("label").AsString()
return If(len(label) > 0, Label(
For(field.GetId()),
parent["label_attributes"](parent, field),
Text(label),
))
}
theme["field_attributes"] = func(parent map[string]RenderFunc, args ...any) Node {
field := args[0].(*form.Field)
return parent["attributes"](parent, field.GetOption("attr").AsAttrs())
}
theme["textarea_attributes"] = func(parent map[string]RenderFunc, args ...any) Node {
return parent["field_attributes"](parent, args...)
}
theme["input_attributes"] = func(parent map[string]RenderFunc, args ...any) Node {
return parent["field_attributes"](parent, args...)
}
theme["sub_form_attributes"] = func(parent map[string]RenderFunc, args ...any) Node {
return parent["field_attributes"](parent, args...)
}
theme["input"] = func(parent map[string]RenderFunc, args ...any) Node {
field := args[0].(*form.Field)
fieldType := "text"
if field.HasOption("type") {
fieldType = field.GetOption("type").AsString()
}
value := cast.ToString(field.Data)
if fieldType == "checkbox" {
value = "1"
}
return Input(
Name(field.GetName()),
ID(field.GetId()),
Type(fieldType),
Value(value),
If(fieldType == "checkbox" && field.Data != nil && field.Data != false, Checked()),
If(field.HasOption("required") && field.GetOption("required").AsBool(), Required()),
parent["input_attributes"](parent, field),
)
}
theme["choice_options"] = func(parent map[string]RenderFunc, args ...any) Node {
field := args[0].(*form.Field)
choices := field.GetOption("choices").Value.(*form.Choices)
isRequired := field.HasOption("required") && field.GetOption("required").AsBool()
isMultiple := field.GetOption("multiple").AsBool()
var options []Node
if !isMultiple && !isRequired {
options = append(options, Option(
Text(field.GetOption("empty_choice_label").AsString()),
))
}
for _, choice := range choices.GetChoices() {
options = append(options, Option(
Value(choice.Value),
Text(choice.Label),
If(choices.Match(field, choice.Value), Selected()),
))
}
return Group(options)
}
theme["choice_expanded_item"] = func(parent map[string]RenderFunc, args ...any) Node {
return args[0].(Node)
}
theme["choice_attributes"] = func(parent map[string]RenderFunc, args ...any) Node {
return parent["field_attributes"](parent, args...)
}
theme["choice_expanded"] = func(parent map[string]RenderFunc, args ...any) Node {
field := args[0].(*form.Field)
choices := field.GetOption("choices").Value.(*form.Choices)
isRequired := field.HasOption("required") && field.GetOption("required").AsBool()
isMultiple := field.GetOption("multiple").AsBool()
noneLabel := field.GetOption("empty_choice_label").AsString()
var items []Node
if !isMultiple && !isRequired {
id := fmt.Sprintf("%s-%s", field.GetId(), "none")
items = append(items, parent["choice_expanded_item"](parent, Group([]Node{
Input(
Name(field.GetName()),
ID(id),
Value(""),
Type("radio"),
parent["choice_attributes"](parent, field),
If(cast.ToString(field.Data) == "", Checked()),
),
Label(
For(id),
Text(noneLabel),
parent["label_attributes"](parent, field),
),
})))
}
for key, choice := range choices.GetChoices() {
id := fmt.Sprintf("%s-%d", field.GetId(), key)
items = append(items, parent["choice_expanded_item"](parent, Group([]Node{
Input(
Name(field.GetName()),
ID(id),
Value(choice.Value),
If(isMultiple, Type("checkbox")),
If(!isMultiple, Type("radio")),
parent["choice_attributes"](parent, field),
If(choices.Match(field, choice.Value), Checked()),
),
Label(
For(id),
Text(choice.Label),
parent["label_attributes"](parent, field),
),
})))
}
return Group(items)
}
theme["choice"] = func(parent map[string]RenderFunc, args ...any) Node {
field := args[0].(*form.Field)
isRequired := field.HasOption("required") && field.GetOption("required").AsBool()
isExpanded := field.GetOption("expanded").AsBool()
isMultiple := field.GetOption("multiple").AsBool()
noneLabel := field.GetOption("empty_choice_label").AsString()
_ = noneLabel
if isExpanded {
return parent["choice_expanded"](parent, field)
} else {
return Select(
ID(field.GetId()),
If(isRequired, Required()),
If(isMultiple, Multiple()),
Name(field.GetName()),
parent["choice_attributes"](parent, field),
parent["choice_options"](parent, field),
)
}
}
theme["textarea"] = func(parent map[string]RenderFunc, args ...any) Node {
field := args[0].(*form.Field)
return Textarea(
Name(field.GetName()),
ID(field.GetId()),
If(field.HasOption("required") && field.GetOption("required").AsBool(), Required()),
parent["textarea_attributes"](parent, field),
Text(cast.ToString(field.Data)),
)
}
theme["sub_form_label"] = func(parent map[string]RenderFunc, args ...any) Node {
field := args[0].(*form.Field)
if !field.HasOption("label") {
return Raw("")
}
label := field.GetOption("label").AsString()
return If(len(label) > 0, Legend(
parent["label_attributes"](parent, field),
Text(label),
))
}
theme["sub_form_content"] = func(parent map[string]RenderFunc, args ...any) Node {
field := args[0].(*form.Field)
return parent["form_fields"](parent, field.Children)
}
theme["sub_form"] = func(parent map[string]RenderFunc, args ...any) Node {
field := args[0].(*form.Field)
return FieldSet(
ID(field.GetId()),
parent["sub_form_label"](parent, field),
parent["sub_form_attributes"](parent, field),
parent["sub_form_content"](parent, field),
)
}
theme["collection"] = func(parent map[string]RenderFunc, args ...any) Node {
field := args[0].(*form.Field)
var prototype string
if opt := field.GetOption("form"); opt != nil {
if val, ok := opt.Value.(*form.Form); ok {
var buffer bytes.Buffer
dest := form.NewFieldSubForm(field.Name)
for _, c := range val.Fields {
child := c.Copy()
child.NamePrefix = "[__name__]"
dest.Add(child)
}
fieldPrototype := parent["form_row"](parent, dest)
fieldPrototype.Render(&buffer)
prototype = buffer.String()
}
}
field.WithOptions(form.NewOption("prototype", prototype))
field.Widget = "collection_build"
return parent["form_widget"](parent, field)
}
theme["collection_build"] = func(parent map[string]RenderFunc, args ...any) Node {
field := args[0].(*form.Field)
prototype := field.GetOption("prototype").AsString()
var items []Node
for _, child := range field.Children {
items = append(items, parent["form_row"](parent, child))
}
return Div(
Attr("data-prototype", prototype),
Group(items),
)
}
theme["form_widget"] = func(parent map[string]RenderFunc, args ...any) Node {
field := args[0].(*form.Field)
tpl, ok := parent[field.Widget]
if !ok {
return Raw("Invalid field widget: " + field.Widget)
}
return tpl(parent, field)
}
theme["form_row"] = func(parent map[string]RenderFunc, args ...any) Node {
field := args[0].(*form.Field)
isCheckbox := field.HasOption("type") && field.GetOption("type").AsString() == "checkbox"
hasChildren := len(field.Children) > 0
labelAfter := isCheckbox && !hasChildren
label := parent["form_label"](parent, field)
attrs := Raw("")
if field.HasOption("row_attr") {
attrs = parent["attributes"](parent, field.GetOption("row_attr").AsAttrs())
}
return Div(
attrs,
If(!labelAfter, label),
parent["form_widget_errors"](parent, field),
parent["form_widget"](parent, field),
If(labelAfter, label),
parent["form_widget_help"](parent, field),
)
}
theme["form_fields"] = func(parent map[string]RenderFunc, args ...any) Node {
var items []Node
for _, item := range args[0].([]*form.Field) {
items = append(items, parent["form_row"](parent, item))
}
return Group(items)
}
theme["form_content"] = func(parent map[string]RenderFunc, args ...any) Node {
form := args[0].(*form.Form)
return Group([]Node{
parent["form_errors"](parent, form),
parent["form_help"](parent, form),
parent["form_fields"](parent, form.Fields),
})
}
theme["form"] = func(parent map[string]RenderFunc, args ...any) Node {
form := args[0].(*form.Form)
return Form(
Class("gf-form"),
Action(form.Action),
Method(form.Method),
parent["form_attributes"](parent, form),
parent["form_content"](parent, form),
)
}
return theme
})

View file

@ -1,84 +0,0 @@
package theme
// @license GNU AGPL version 3 or any later version
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
import (
"bytes"
"html/template"
"gitnet.fr/deblan/go-form/form"
"maragu.dev/gomponents"
)
type RenderFunc func(parent map[string]RenderFunc, args ...any) gomponents.Node
type Renderer struct {
Theme map[string]RenderFunc
}
func NewRenderer(theme map[string]RenderFunc) *Renderer {
r := new(Renderer)
r.Theme = theme
return r
}
func toTemplateHtml(n gomponents.Node) template.HTML {
var buf bytes.Buffer
n.Render(&buf)
return template.HTML(buf.String())
}
func (r *Renderer) RenderForm(form *form.Form) template.HTML {
return toTemplateHtml(r.Theme["form"](r.Theme, form))
}
func (r *Renderer) FuncMap() template.FuncMap {
funcs := template.FuncMap{}
for _, name := range []string{"form", "form_errors"} {
funcs[name] = func(form *form.Form) template.HTML {
return toTemplateHtml(r.Theme[name](r.Theme, form))
}
}
for _, name := range []string{"form_row", "form_widget", "form_label", "form_widget_errors"} {
funcs[name] = func(field *form.Field) template.HTML {
return toTemplateHtml(r.Theme[name](r.Theme, field))
}
}
return funcs
}
func (r *Renderer) Render(name, tpl string, args any) template.HTML {
t, err := template.New(name).Funcs(r.FuncMap()).Parse(tpl)
if err != nil {
return template.HTML(err.Error())
}
var buf bytes.Buffer
err = t.Execute(&buf, args)
if err != nil {
return template.HTML(err.Error())
}
return template.HTML(buf.String())
}

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@ -1,21 +0,0 @@
package theme
func CreateTheme(generator func() map[string]RenderFunc) map[string]RenderFunc {
return generator()
}
func ExtendTheme(base map[string]RenderFunc, generator func() map[string]RenderFunc) map[string]RenderFunc {
extended := CreateTheme(generator)
for i, v := range base {
_, ok := extended[i]
if ok {
extended["base_"+i] = v
} else {
extended[i] = v
}
}
return extended
}

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@ -1,111 +0,0 @@
package util
// @license GNU AGPL version 3 or any later version
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
import (
"regexp"
"strings"
"github.com/spf13/cast"
)
type CollectionValue struct {
Name string
Value string
Children map[string]*CollectionValue
}
type Collection struct {
Children map[int]*CollectionValue
}
func NewCollection() *Collection {
return &Collection{
Children: make(map[int]*CollectionValue),
}
}
func NewCollectionValue(name string) *CollectionValue {
return &CollectionValue{
Name: name,
Children: make(map[string]*CollectionValue),
}
}
func (c *Collection) Add(indexes []string, value string) {
firstIndex := cast.ToInt(indexes[0])
size := len(indexes)
child := c.Children[firstIndex]
if child == nil {
child = NewCollectionValue(indexes[0])
c.Children[firstIndex] = child
}
child.Add(indexes[1:size], value, nil)
}
func (c *Collection) Slice() []any {
var result []any
for _, child := range c.Children {
result = append(result, child.Map())
}
return result
}
func (c *CollectionValue) Map() any {
if len(c.Children) == 0 {
return c.Value
}
results := make(map[string]any)
for _, child := range c.Children {
results[child.Name] = child.Map()
}
return results
}
func (c *CollectionValue) Add(indexes []string, value string, lastChild *CollectionValue) {
size := len(indexes)
if size > 0 {
firstIndex := indexes[0]
child := c.Children[firstIndex]
child = NewCollectionValue(indexes[0])
c.Children[firstIndex] = child
child.Add(indexes[1:size], value, child)
} else {
lastChild.Value = value
}
}
func ExtractDataIndexes(value string) []string {
re := regexp.MustCompile(`\[[^\]]+\]`)
items := re.FindAll([]byte(value), -1)
var results []string
for _, i := range items {
results = append(results, strings.Trim(string(i), "[]"))
}
return results
}

View file

@ -1,59 +0,0 @@
package util
// @license GNU AGPL version 3 or any later version
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
import (
"errors"
"reflect"
"github.com/iancoleman/strcase"
)
func InspectStruct(input interface{}) (map[string]interface{}, error) {
val := reflect.ValueOf(input)
if val.Kind() == reflect.Ptr {
val = val.Elem()
}
if val.Kind() == reflect.Map {
return input.(map[string]interface{}), nil
}
if val.Kind() != reflect.Struct {
return nil, errors.New("Invalid type")
}
result := make(map[string]interface{})
typ := val.Type()
for i := 0; i < val.NumField(); i++ {
field := typ.Field(i)
value := val.Field(i)
tags := typ.Field(i).Tag
name := field.Name
fieldTag := tags.Get("field")
if fieldTag == "lowerCamel" {
name = strcase.ToLowerCamel(name)
}
result[name] = value.Interface()
}
return result, nil
}

View file

@ -1,57 +0,0 @@
package util
// @license GNU AGPL version 3 or any later version
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
import (
"fmt"
"net/url"
)
func MapToUrlValues(values *url.Values, prefix string, data map[string]any) {
keyFormater := "%s"
if prefix != "" {
keyFormater = prefix + "[%s]"
}
for key, value := range data {
keyValue := fmt.Sprintf(keyFormater, key)
switch v := value.(type) {
case string:
values.Add(keyValue, v)
case []string:
case []int:
case []int32:
case []int64:
case []any:
for _, s := range v {
values.Add(keyValue, fmt.Sprintf("%v", s))
}
case bool:
if v {
values.Add(keyValue, "1")
} else {
values.Add(keyValue, "0")
}
case int, int64, float64:
values.Add(keyValue, fmt.Sprintf("%v", v))
case map[string]any:
MapToUrlValues(values, keyValue, v)
default:
}
}
}

View file

@ -1,20 +0,0 @@
package validation
// @license GNU AGPL version 3 or any later version
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
type Constraint interface {
Validate(data any) []Error
}

View file

@ -1,18 +0,0 @@
package validation
// @license GNU AGPL version 3 or any later version
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
type Error string

View file

@ -1,34 +0,0 @@
package validation
import (
"strconv"
)
type IsEven struct {
Message string
TypeErrorMessage string
}
func NewIsEven() IsEven {
return IsEven{
Message: "This value is not an even number.",
TypeErrorMessage: "This value can not be processed.",
}
}
func (c IsEven) Validate(data any) []Error {
errors := []Error{}
// The constraint should not validate an empty data
if len(NewNotBlank().Validate(data)) == 0 {
i, err := strconv.Atoi(data.(string))
if err != nil {
errors = append(errors, Error(c.TypeErrorMessage))
} else if i%2 != 0 {
errors = append(errors, Error(c.Message))
}
}
return errors
}

View file

@ -1,34 +0,0 @@
package validation
import (
"strconv"
)
type IsOdd struct {
Message string
TypeErrorMessage string
}
func NewIsOdd() IsOdd {
return IsOdd{
Message: "This value is not a odd number.",
TypeErrorMessage: "This value can not be processed.",
}
}
func (c IsOdd) Validate(data any) []Error {
errors := []Error{}
// The constraint should not validate an empty data
if len(NewNotBlank().Validate(data)) == 0 {
i, err := strconv.Atoi(data.(string))
if err != nil {
errors = append(errors, Error(c.TypeErrorMessage))
} else if i%2 != 1 {
errors = append(errors, Error(c.Message))
}
}
return errors
}

View file

@ -1,110 +0,0 @@
package validation
// @license GNU AGPL version 3 or any later version
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
import (
"reflect"
"strings"
"github.com/spf13/cast"
)
type Length struct {
Min *int
Max *int
MinMessage string
MaxMessage string
ExactMessage string
TypeErrorMessage string
}
func NewLength() Length {
return Length{
MinMessage: "This value is too short (min: {{ min }}).",
MaxMessage: "This value is too long (max: {{ max }}).",
ExactMessage: "This value is not valid (expected: {{ min }}).",
TypeErrorMessage: "This value can not be processed.",
}
}
func (c Length) WithMin(v int) Length {
c.Min = &v
return c
}
func (c Length) WithMax(v int) Length {
c.Max = &v
return c
}
func (c Length) WithExact(v int) Length {
c.Min = &v
c.Max = &v
return c
}
func (c Length) Validate(data any) []Error {
if (c.Min == nil && c.Max == nil) || len(NewNotBlank().Validate(data)) != 0 {
return []Error{}
}
errors := []Error{}
t := reflect.TypeOf(data)
if t.Kind() == reflect.Ptr {
t = t.Elem()
}
var size *int
switch t.Kind() {
case reflect.Array:
case reflect.Slice:
s := reflect.ValueOf(data).Len()
size = &s
case reflect.String:
s := len(data.(string))
size = &s
default:
errors = append(errors, Error(c.TypeErrorMessage))
}
if size != nil {
if c.Max != nil && c.Min != nil {
if *c.Max == *c.Min && *size != *c.Max {
errors = append(errors, Error(c.BuildMessage(c.ExactMessage)))
}
} else if c.Min != nil && *size < *c.Min {
errors = append(errors, Error(c.BuildMessage(c.MinMessage)))
} else if c.Max != nil && *size > *c.Max {
errors = append(errors, Error(c.BuildMessage(c.MaxMessage)))
}
}
return errors
}
func (c *Length) BuildMessage(message string) string {
message = strings.ReplaceAll(message, "{{ min }}", cast.ToString(c.Min))
message = strings.ReplaceAll(message, "{{ max }}", cast.ToString(c.Max))
return message
}

View file

@ -1,42 +0,0 @@
package validation
// @license GNU AGPL version 3 or any later version
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
import "net/mail"
type Mail struct {
Message string
}
func NewMail() Mail {
return Mail{
Message: "This value is not a valid email address.",
}
}
func (c Mail) Validate(data any) []Error {
errors := []Error{}
if len(NewNotBlank().Validate(data)) == 0 {
_, err := mail.ParseAddress(data.(string))
if err != nil {
errors = append(errors, Error(c.Message))
}
}
return errors
}

View file

@ -1,84 +0,0 @@
package validation
// @license GNU AGPL version 3 or any later version
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
import (
"reflect"
"github.com/spf13/cast"
)
type NotBlank struct {
Message string
TypeErrorMessage string
}
func NewNotBlank() NotBlank {
return NotBlank{
Message: "This value should not be blank.",
TypeErrorMessage: "This value can not be processed.",
}
}
func (c NotBlank) Validate(data any) []Error {
isValid := true
errors := []Error{}
v := reflect.ValueOf(data)
if data == nil || v.IsZero() {
errors = append(errors, Error(c.Message))
return errors
}
t := reflect.TypeOf(data)
if t.Kind() == reflect.Ptr {
t = t.Elem()
}
switch t.Kind() {
case reflect.Bool:
isValid = data == false
case reflect.Array:
case reflect.Slice:
isValid = reflect.ValueOf(data).Len() > 0
case reflect.String:
isValid = len(data.(string)) > 0
case reflect.Float32:
case reflect.Float64:
case reflect.Int:
case reflect.Int16:
case reflect.Int32:
case reflect.Int64:
case reflect.Int8:
case reflect.Uint:
case reflect.Uint16:
case reflect.Uint32:
case reflect.Uint64:
case reflect.Uint8:
isValid = cast.ToFloat64(data.(string)) == float64(0)
default:
errors = append(errors, Error(c.TypeErrorMessage))
}
if !isValid {
errors = append(errors, Error(c.Message))
}
return errors
}

View file

@ -1,117 +0,0 @@
package validation
// @license GNU AGPL version 3 or any later version
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
import (
"reflect"
"strings"
"github.com/spf13/cast"
)
type Range struct {
Min *float64
Max *float64
MinMessage string
MaxMessage string
RangeMessage string
TypeErrorMessage string
}
func NewRange() Range {
return Range{
MinMessage: "This value must be greater than or equal to {{ min }}.",
MaxMessage: "This value must be less than or equal to {{ max }}.",
RangeMessage: "This value should be between {{ min }} and {{ max }}.",
TypeErrorMessage: "This value can not be processed.",
}
}
func (c Range) WithMin(v float64) Range {
c.Min = &v
return c
}
func (c Range) WithMax(v float64) Range {
c.Max = &v
return c
}
func (c Range) WithRange(vMin, vMax float64) Range {
c.Min = &vMin
c.Max = &vMax
return c
}
func (c Range) Validate(data any) []Error {
if c.Min == nil && c.Max == nil || len(NewNotBlank().Validate(data)) != 0 {
return []Error{}
}
errors := []Error{}
t := reflect.TypeOf(data)
if t.Kind() == reflect.Ptr {
t = t.Elem()
}
switch t.Kind() {
case reflect.Float32:
case reflect.Float64:
case reflect.Int:
case reflect.Int16:
case reflect.Int32:
case reflect.Int64:
case reflect.Int8:
case reflect.Uint:
case reflect.Uint16:
case reflect.Uint32:
case reflect.Uint64:
case reflect.Uint8:
case reflect.String:
isValidMin := c.Min == nil || *c.Min <= cast.ToFloat64(data.(string))
isValidMax := c.Max == nil || *c.Max >= cast.ToFloat64(data.(string))
if !isValidMin || !isValidMax {
errors = append(errors, Error(c.BuildMessage()))
}
default:
errors = append(errors, Error(c.TypeErrorMessage))
}
return errors
}
func (c *Range) BuildMessage() string {
var message string
if c.Min != nil && c.Max == nil {
message = c.MinMessage
} else if c.Max != nil && c.Min == nil {
message = c.MaxMessage
} else {
message = c.RangeMessage
}
message = strings.ReplaceAll(message, "{{ min }}", cast.ToString(c.Min))
message = strings.ReplaceAll(message, "{{ max }}", cast.ToString(c.Max))
return message
}

View file

@ -1,75 +0,0 @@
package validation
// @license GNU AGPL version 3 or any later version
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
import (
"reflect"
"regexp"
)
type Regex struct {
Message string
TypeErrorMessage string
Match bool
Expression string
}
func NewRegex(expr string) Regex {
return Regex{
Message: "This value is not valid.",
TypeErrorMessage: "This value can not be processed.",
Match: true,
Expression: expr,
}
}
func (c Regex) MustMatch() Regex {
c.Match = true
return c
}
func (c Regex) MustNotMatch() Regex {
c.Match = false
return c
}
func (c Regex) Validate(data any) []Error {
errors := []Error{}
if len(NewNotBlank().Validate(data)) == 0 {
t := reflect.TypeOf(data)
if t.Kind() == reflect.Ptr {
t = t.Elem()
}
switch t.Kind() {
case reflect.String:
matched, _ := regexp.MatchString(c.Expression, data.(string))
if !matched && c.Match || matched && !c.Match {
errors = append(errors, Error(c.Message))
}
default:
errors = append(errors, Error(c.TypeErrorMessage))
}
}
return errors
}

View file

@ -1,28 +0,0 @@
package validation
// @license GNU AGPL version 3 or any later version
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
func Validate(data any, constraints []Constraint) (bool, []Error) {
errs := []Error{}
for _, constraint := range constraints {
for _, e := range constraint.Validate(data) {
errs = append(errs, e)
}
}
return len(errs) == 0, errs
}