IdenticalTo.rst

IdenticalTo

.. versionadded:: 2.3
    The ``IdenticalTo`` constraint was introduced in Symfony 2.3.

Validates that a value is identical to another value, defined in the options. To force that a value is not identical, see :doc:`/reference/constraints/NotIdenticalTo`.

Caution!

This constraint compares using ===, so 3 and "3" are not considered equal. Use :doc:`/reference/constraints/EqualTo` to compare with ==.

Applies to	:ref:`property or method<validation-property-target>`
Options	`value`_ message `payload`_
Class	:class:`Symfony\\Component\\Validator\\Constraints\\IdenticalTo`
Validator	:class:`Symfony\\Component\\Validator\\Constraints\\IdenticalToValidator`

Basic Usage

The following constraints ensure that:

• firstName of Person class is equal to Mary and is a string
• age is equal to``20`` and is of type integer

.. configuration-block::

    .. code-block:: php-annotations

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

        use Symfony\Component\Validator\Constraints as Assert;

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

            /**
             * @Assert\IdenticalTo(
             *     value = 20
             * )
             */
            protected $age;
        }

    .. code-block:: yaml

        # src/AppBundle/Resources/config/validation.yml
        AppBundle\Entity\Person:
            properties:
                age:
                    - IdenticalTo:
                        value: 20

    .. code-block:: xml

        <!-- 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="age">
                    <constraint name="IdenticalTo">
                        <option name="value">20</option>
                    </constraint>
                </property>
            </class>
        </constraint-mapping>

    .. code-block:: php

        // 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('age', new Assert\IdenticalTo(array(
                    'value' => 20,
                )));
            }
        }

Options

message

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

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