NotBlank

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
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:

  • Annotations
     1
     2
     3
     4
     5
     6
     7
     8
     9
    10
    11
    12
    // src/Acme/BlogBundle/Entity/Author.php
    namespace Acme\BlogBundle\Entity;
    
    use Symfony\Component\Validator\Constraints as Assert;
    
    class Author
    {
        /**
         * @Assert\NotBlank()
         */
        protected $firstName;
    }
    
  • YAML
    1
    2
    3
    4
    5
    # src/Acme/BlogBundle/Resources/config/validation.yml
    Acme\BlogBundle\Entity\Author:
        properties:
            firstName:
                - NotBlank: ~
    
  • XML
     1
     2
     3
     4
     5
     6
     7
     8
     9
    10
    11
    12
    <!-- 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
     1
     2
     3
     4
     5
     6
     7
     8
     9
    10
    11
    12
    13
    // 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.

payload

type: mixed default: null

2.6The payload option was introduced in Symfony 2.6.

This option can be used to attach arbitrary domain-specific data to a constraint. The configured payload is not used by the Validator component, but its processing is completely up to.

For example, you may want to used several error levels to present failed constraint differently in the front-end depending on the severity of the error.

This work is licensed under a Creative Commons Attribution-Share Alike 3.0 Unported License .