MaxLength

Validates that the length of a string is not larger than the given limit.

Applies to	property or method
Options	limit message charset
Class	MaxLength
Validator	MaxLengthValidator

Basic Usage

YAML
Annotations
XML
PHP

        1
2
3
4
5
        # src/Acme/BlogBundle/Resources/config/validation.yml
Acme\BlogBundle\Entity\Blog:
    properties:
        summary:
            - MaxLength: 100
    

        1
2
3
4
5
6
7
8
9
10
11
12
        // src/Acme/BlogBundle/Entity/Blog.php
namespace Acme\BlogBundle\Entity;

use Symfony\Component\Validator\Constraints as Assert;

class Blog
{
    /**
     * @Assert\MaxLength(100)
     */
    protected $summary;
}
    

        1
2
3
4
5
6
7
8
        <!-- src/Acme/BlogBundle/Resources/config/validation.xml -->
<class name="Acme\BlogBundle\Entity\Blog">
    <property name="summary">
        <constraint name="MaxLength">
            <option name="limit">100</option>
        </constraint>
    </property>
</class>
    

        1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
        // src/Acme/BlogBundle/Entity/Blog.php
namespace Acme\BlogBundle\Entity;

use Symfony\Component\Validator\Mapping\ClassMetadata;
use Symfony\Component\Validator\Constraints as Assert;

class Blog
{
    public static function loadValidatorMetadata(ClassMetadata $metadata)
    {
        $metadata->addPropertyConstraint('summary', new Assert\MaxLength(array(
            'limit' => 100,
        )));
    }
}
    

Options

limit

type: integer [default option]

This required option is the "max" value. Validation will fail if the length of the give string is greater than this number.

message

type: string default: This value is too long. It should have {{ limit }} characters or less

The message that will be shown if the underlying string has a length that is longer than the limit option.

charset

type: charset default: UTF-8

If the PHP extension "mbstring" is installed, then the PHP function mb_strlen will be used to calculate the length of the string. The value of the charset option is passed as the second argument to that function.

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