Blank

Validates that a value is blank, defined as equal to a blank string or equal to null. To force that a value strictly be equal to null, see the Null constraint. To force that a value is not blank, see NotBlank.

Applies to	property or method
Options	message
Class	Symfony\Component\Validator\Constraints\Blank
Validator	Symfony\Component\Validator\Constraints\BlankValidator

Basic Usage

If, for some reason, you wanted to ensure that the firstName property of an Author class were blank, you could do the following:

• YAML

  properties:
      firstName:
          - Blank: ~
  

• Annotations

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

Options

message

type: string default: This value should be blank

This is the message that will be shown if the value is not blank.