NotBlank

Validates that a value is not blank, defined as not equal to a blank string and also not equal to null. To force that a value is simply not equal to null, see the NotNull constraint.

Applies to	property or method
Options	message
Class	NotBlank
Validator	NotBlankValidator

Basic Usage

If you wanted to ensure that the firstName property of an Author class were not blank, you could do the following:

• YAML

  # src/Acme/BlogBundle/Resources/config/validation.yml
  Acme\BlogBundle\Entity\Author:
      properties:
          firstName:
              - NotBlank: ~
  

• Annotations

  // src/Acme/BlogBundle/Entity/Author.php
  namespace Acme\BlogBundle\Entity;
  
  use Symfony\Component\Validator\Constraints as Assert;
  
  class Author
  {
      /**
       * @Assert\NotBlank()
       */
      protected $firstName;
  }
  

• XML

  <!-- src/Acme/BlogBundle/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="Acme\BlogBundle\Entity\Author">
          <property name="firstName">
              <constraint name="NotBlank" />
          </property>
      </class>
  </constraint-mapping>
  

• 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->addPropertyConstraint('firstName', new Assert\NotBlank());
      }
  }
  

Options

message

type: string default: This value should not be blank.

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