mirror of https://github.com/Respect/Validation.git synced 2026-03-16 23:35:45 +01:00

Henrique Moody d2198dfd01

Replace isValid() calls with assert()

There's more value on showing how `assert()` displays the validation
messages than simply showing if `isValid()` returns `true` or `false`.

However, that increases the chances of having outdated documentation, so
I created a doc linter that updates the Markdown files with the
correct message.

2026-01-13 23:37:06 -07:00

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NullOr

NullOr(Validator $validator)

Validates the input using a defined validator when the input is not null.

Usage

v::nullOr(v::email())->assert(null);
// Validation passes successfully

v::nullOr(v::email())->assert('example@example.com');
// Validation passes successfully

v::nullOr(v::email())->assert('not an email');
// → "not an email" must be a valid email address or must be null

Prefix

For convenience, you can use nullOr as a prefix to any validator:

v::nullOrEmail()->assert('not an email');
// → "not an email" must be a valid email address or must be null

v::nullOrBetween(1, 3)->assert(2);
// Validation passes successfully

v::nullOrBetween(1, 3)->assert(null);
// Validation passes successfully

Templates

`NullOr::TEMPLATE_STANDARD`

Mode	Template
`default`	or must be null
`inverted`	and must not be null

Template as suffix

The template serves as a suffix to the template of the inner validator.

v::nullOr(v::alpha())->assert('has1number');
// → "has1number" must contain only letters (a-z) or must be null

v::not(v::nullOr(v::alpha()))->assert("alpha");
// → "alpha" must not contain letters (a-z) and must not be null

Template placeholders

Placeholder	Description
`subject`	The validated input or the custom validator name (if specified).

Categorization

Nesting

Changelog

Version	Description
3.0.0	Renamed to `NullOr`
2.0.0	Created as `Nullable`

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