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NotNull

2.1 version
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NotNull

Validates that a value is not strictly equal to null. To ensure that a value is simply not blank (not a blank string), see the NotBlank constraint.

Applies to property or method
Options
Class Symfony\Component\Validator\Constraints\NotNull
Validator Symfony\Component\Validator\Constraints\NotNullValidator

Basic Usage

If you wanted to ensure that the firstName property of an Author class were not strictly equal to null, you would:

  • YAML
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    # src/BlogBundle/Resources/config/validation.yml
Acme\BlogBundle\Entity\Author:
    properties:
        firstName:
            - NotNull: ~
  • Annotations
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    // src/Acme/BlogBundle/Entity/Author.php
namespace Acme\BlogBundle\Entity;

use Symfony\Component\Validator\Constraints as Assert;

class Author
{
    /**
     * @Assert\NotNull()
     */
    protected $firstName;
}
  • XML
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    <!-- src/Acme/BlogBundle/Resources/config/validation.xml -->
<class name="Acme\BlogBundle\Entity\Author">
    <property name="firstName">
        <constraint name="NotNull" />
    </property>
</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->addPropertyConstraint('firstName', new Assert\NotNull());
    }
}

Options

message

type: string default: This value should not be null

This is the message that will be shown if the value is null.

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