IsFalse

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Basic Usage
Options
- message

IsFalse

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 IsTrue.

Applies to	property or method
Options	message
Class	IsFalse
Validator	IsFalseValidator

Basic Usage

The IsFalse 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:

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        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:

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PHP

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        // src/AppBundle/Entity/Author.php
namespace AppBundle\Entity;

use Symfony\Component\Validator\Constraints as Assert;

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

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        # src/AppBundle/Resources/config/validation.yml
AppBundle\Entity\Author
    getters:
        stateInvalid:
            - 'IsFalse':
                message: You've entered an invalid state.
    

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        <!-- src/AppBundle/Resources/config/validation.xml -->
<?xml version="1.0" encoding="UTF-8" ?>
<constraint-mapping xmlns="http://symfony.com/schema/dic/constraint-mapping"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://symfony.com/schema/dic/constraint-mapping http://symfony.com/schema/dic/constraint-mapping/constraint-mapping-1.0.xsd">

    <class name="AppBundle\Entity\Author">
        <getter property="stateInvalid">
            <constraint name="IsFalse">
                <option name="message">You've entered an invalid state.</option>
            </constraint>
        </getter>
    </class>
</constraint-mapping>
    

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        // src/AppBundle/Entity/Author.php
namespace AppBundle\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\IsFalse());
    }
}
    