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EqualTo

3.1 version
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EqualTo

Validates that a value is equal to another value, defined in the options. To force that a value is not equal, see NotEqualTo.

Caution

This constraint compares using ==, so 3 and "3" are considered equal. Use IdenticalTo to compare with ===.

Applies to property or method
Options
Class EqualTo
Validator EqualToValidator

Basic Usage

If you want to ensure that the firstName of a Person class is equal to Mary and that the age is 20, you could do the following:

  • Annotations
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    // src/AppBundle/Entity/Person.php
namespace AppBundle\Entity;

use Symfony\Component\Validator\Constraints as Assert;

class Person
{
    /**
     * @Assert\EqualTo("Mary")
     */
    protected $firstName;

    /**
     * @Assert\EqualTo(
     *     value = 20
     * )
     */
    protected $age;
}
  • YAML
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    # src/AppBundle/Resources/config/validation.yml
AppBundle\Entity\Person:
    properties:
        firstName:
            - EqualTo: Mary
        age:
            - EqualTo:
                value: 20
  • XML
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    <!-- src/AppBundle/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="AppBundle\Entity\Person">
        <property name="firstName">
            <constraint name="EqualTo">
                <value>Mary</value>
            </constraint>
        </property>
        <property name="age">
            <constraint name="EqualTo">
                <option name="value">20</option>
            </constraint>
        </property>
    </class>
</constraint-mapping>
  • PHP
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    // src/AppBundle/Entity/Person.php
namespace AppBundle\Entity;

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

class Person
{
    public static function loadValidatorMetadata(ClassMetadata $metadata)
    {
        $metadata->addPropertyConstraint('firstName', new Assert\EqualTo('Mary'));

        $metadata->addPropertyConstraint('age', new Assert\EqualTo(array(
            'value' => 20,
        )));
    }
}

Options

value

type: mixed [default option]

This option is required. It defines the value to compare to. It can be a string, number or object.

message

type: string default: This value should be equal to {{ compared_value }}.

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

payload

type: mixed default: null

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 you.

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

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