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False

2.0 version
Maintained Unmaintained

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
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:

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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:

  • YAML
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    # src/BlogBundle/Resources/config/validation.yml
    Acme\BlogBundle\Entity\Author
        getters:
            stateInvalid:
                - "False":
                    message: You've entered an invalid state.
    
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    // 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()
         {
            // ...
         }
    }
    
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    <!-- 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
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    // 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.