# Templating

## Variables

By default, these variables are given to a CMS view:

* The current node is `_node` and its menu is `_menu`
* The current navigation is `_navigation`
* The current locale is `_locale`
* The CMS store is `_store`

## Navigations and menus

* Retrieve all navigations: `_store.navigations`
* Retrieve a navigation by its code: `_store.navigation('the_code')`

* Retrieve all navigation menus: `_navigation.menus`
* Retrieve a menu by its code: `_navigation.menu('the_code')`
* Retrieve all nodes of a menu: `menu.rootNode.children`
* Retrieve visible nodes of a menu: `menu.rootNode.children({visible: true})`

* Test if a node is the current one: `_store.isActiveNode(node)`
* Test if a node is or contains the current one: `_store.isActiveNode(node, true)`

## Page

You can access a page's blocks this way:

```twig
{% set myBlock = _page.myBlock.value %}

{{ myBlock }}
```
## URL and path

Murph has somes twig functions to manage URLs:

### Generic functions

* Same as [twig url](https://symfony.com/doc/current/reference/twig_reference.html#url) but catches all exceptions: `{{ safe_url(routeName, options, relative) }}`
* Same as [twig path](https://symfony.com/doc/current/reference/twig_reference.html#path) but catches all exceptions: `{{ safe_path(routeName, options, relative) }}`

### Node functions

* Generates a URL using a node: `{{ node_url(node, options, relative) }}`
* Generates a path using a node: `{{ node_path(node, options, relative) }}`
* Generates a URL using a node and catches all exceptions: `{{ safe_node_url(node, options, relative) }}`
* Generates a path using a node and catches all exceptions: `{{ safe_node_path(node, options, relative) }}`

A node may have a disabled URL:

```twig
{% if not node.disableUrl %}
    {% set path = safe_node_path(node) %}
	{% set url = safe_node_url(node) %}
{% endif %}
```

When the navigation has several domains, you can specify the domain:

```twig
{% set path = safe_node_path(node, {_domain: _domain}) %}
{% set url = safe_node_url(node, {_domain: _domain}) %}
```

## Code functions

* Generates a URL using codes: `{{ code_url(menuCode, nodeCode, options, relative) }}`
* Generates a path using codes: `{{ code_path(menuCode, nodeCode, options, relative) }}`
* Generates a URL using codes and catches all exceptions: `{{ safe_code_url(menuCode, nodeCode, options, relative) }}`
* Generates a path using codes and catches all exceptions: `{{ safe_code_path(menuCode, nodeCode, options, relative) }}`

### Filters

When a content could contains tags (eg: '{{url://my_route}}`), use `murph_url`. See the example below:

| Code                                  | Output                                                     |
| ----                                  | ------                                                     |
| `{{ content }}`           | `A link to the <a href="{{url://contact}}">contact page</a>`           |
| `{{ content|murph_url }}` | `A link to the <a href="https://example.com/contact">contact page</a>` |

## String builder

The string builder builds a string using a format and an object or an array.

Examples:

* `{{ 'Entity ID is {id}'|build_string(myEntity) }}` will output: `Entity ID is 42`
* `{{ 'Hello, {user.displayName}!'|build_string(myEntity) }}` will output `Hello, John doe!`

In case of an not accessible property, no exception will be thrown.

## File attributes

Attributes are managed from the file manager. They are accessibles with these filters:

| Code                                                           | Result |
| ------                                                         | ------ |
| `{{ '<img ... alt="{{fattr://hash/alt}}">'|file_attributes }}` | `<img ... alt="Attribute 'alt' of the file with the given hash">` |
| `{{ 'path/to/file'|file_attribute('alt') }}`                   | Attribute `alt` of the given file                   |
