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False

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False¶

Validates that a value is false. Specifically, this checks to see if the value is exactly false, exactly the integer 0, or exactly the string "0".

Also see True.

Applies to	property or method
Options	message
Class	`False`
Validator	`FalseValidator`

Basic Usage¶

The False constraint can be applied to a property or a "getter" method, but is most commonly useful in the latter case. For example, suppose that you want to guarantee that some state property is not in a dynamic invalidStates array. First, you'd create a "getter" method:

protected $state;

protected $invalidStates = array();

public function isStateInvalid()
{
    return in_array($this->state, $this->invalidStates);
}

In this case, the underlying object is only valid if the isStateInvalid method returns false:

YAML

# src/BlogBundle/Resources/config/validation.yml
Acme\BlogBundle\Entity\Author
    getters:
        stateInvalid:
            - "False":
                message: You've entered an invalid state.

Annotations

// src/Acme/BlogBundle/Entity/Author.php
namespace Acme\BlogBundle\Entity;

use Symfony\Component\Validator\Constraints as Assert;

class Author
{
    /**
     * @Assert\False(
     *     message = "You've entered an invalid state."
     * )
     */
     public function isStateInvalid()
     {
        // ...
     }
}

XML

<!-- src/Acme/BlogBundle/Resources/config/validation.xml -->
<class name="Acme\BlogBundle\Entity\Author">
    <getter property="stateInvalid">
        <constraint name="False">
            <option name="message">You've entered an invalid state.</option>
        </constraint>
    </getter>
</class>

PHP

// src/Acme/BlogBundle/Entity/Author.php
namespace Acme\BlogBundle\Entity;

use Symfony\Component\Validator\Mapping\ClassMetadata;
use Symfony\Component\Validator\Constraints as Assert;

class Author
{
    public static function loadValidatorMetadata(ClassMetadata $metadata)
    {
        $metadata->addGetterConstraint('stateInvalid', new Assert\False());
    }
}

Caution

When using YAML, be sure to surround False with quotes ("False") or else YAML will convert this into a Boolean value.

Options¶

message¶

type: string default: This value should be false

This message is shown if the underlying data is not false.

This work, including the code samples, is licensed under a Creative Commons BY-SA 3.0 license.