custom_dql_functions.rst

.. index::
   single: Doctrine; Custom DQL functions

How to Register custom DQL Functions

Doctrine allows you to specify custom DQL functions. For more information on this topic, read Doctrine's cookbook article "DQL User Defined Functions".

In Symfony, you can register your custom DQL functions as follows:

.. configuration-block::

    .. code-block:: yaml

        # app/config/config.yml
        doctrine:
            orm:
                # ...
                dql:
                    string_functions:
                        test_string: AppBundle\DQL\StringFunction
                        second_string: AppBundle\DQL\SecondStringFunction
                    numeric_functions:
                        test_numeric: AppBundle\DQL\NumericFunction
                    datetime_functions:
                        test_datetime: AppBundle\DQL\DatetimeFunction

    .. code-block:: xml

        <!-- app/config/config.xml -->
        <container xmlns="http://symfony.com/schema/dic/services"
            xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
            xmlns:doctrine="http://symfony.com/schema/dic/doctrine"
            xsi:schemaLocation="http://symfony.com/schema/dic/services
                http://symfony.com/schema/dic/services/services-1.0.xsd
                http://symfony.com/schema/dic/doctrine
                http://symfony.com/schema/dic/doctrine/doctrine-1.0.xsd">

            <doctrine:config>
                <doctrine:orm>
                    <!-- ... -->
                    <doctrine:dql>
                        <doctrine:string-function name="test_string">AppBundle\DQL\StringFunction</doctrine:string-function>
                        <doctrine:string-function name="second_string">AppBundle\DQL\SecondStringFunction</doctrine:string-function>
                        <doctrine:numeric-function name="test_numeric">AppBundle\DQL\NumericFunction</doctrine:numeric-function>
                        <doctrine:datetime-function name="test_datetime">AppBundle\DQL\DatetimeFunction</doctrine:datetime-function>
                    </doctrine:dql>
                </doctrine:orm>
            </doctrine:config>
        </container>

    .. code-block:: php

        // app/config/config.php
        use AppBundle\DQL\StringFunction;
        use AppBundle\DQL\SecondStringFunction;
        use AppBundle\DQL\NumericFunction;
        use AppBundle\DQL\DatetimeFunction;

        $container->loadFromExtension('doctrine', array(
            'orm' => array(
                // ...
                'dql' => array(
                    'string_functions' => array(
                        'test_string'   => StringFunction::class,
                        'second_string' => SecondStringFunction::class,
                    ),
                    'numeric_functions' => array(
                        'test_numeric' => NumericFunction::class,
                    ),
                    'datetime_functions' => array(
                        'test_datetime' => DatetimeFunction::class,
                    ),
                ),
            ),
        ));

Note

In case the entity_managers were named explicitly, configuring the functions with the orm directly will trigger the exception Unrecognized option "dql" under "doctrine.orm". The dql configuration block must be defined under the named entity manager.

.. configuration-block::

    .. code-block:: yaml

        # app/config/config.yml
        doctrine:
            orm:
                # ...
                entity_managers:
                    example_manager:
                        # Place your functions here
                        dql:
                            datetime_functions:
                                test_datetime: AppBundle\DQL\DatetimeFunction

    .. code-block:: xml

        # app/config/config.xml
        <?xml version="1.0" encoding="UTF-8" ?>
        <container xmlns="http://symfony.com/schema/dic/services"
            xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
            xmlns:doctrine="http://symfony.com/schema/dic/doctrine"
            xsi:schemaLocation="http://symfony.com/schema/dic/services
                http://symfony.com/schema/dic/services/services-1.0.xsd
                http://symfony.com/schema/dic/doctrine
                http://symfony.com/schema/dic/doctrine/doctrine-1.0.xsd">

            <doctrine:config>
                <doctrine:orm>
                    <!-- ... -->

                    <doctrine:entity-manager name="example_manager">
                        <!-- place your functions here -->
                        <doctrine:dql>
                            <doctrine:datetime-function name="test_datetime">
                                AppBundle\DQL\DatetimeFunction
                            </doctrine:datetime-function>
                        </doctrine:dql>
                    </doctrine:entity-manager>
                </doctrine:orm>
            </doctrine:config>
        </container>

    .. code-block:: php

        // app/config/config.php
        use AppBundle\DQL\DatetimeFunction;

        $container->loadFromExtension('doctrine', array(
            'doctrine' => array(
                'orm' => array(
                    // ...
                    'entity_managers' => array(
                        'example_manager' => array(
                            // place your functions here
                            'dql' => array(
                                'datetime_functions' => array(
                                    'test_datetime' => DatetimeFunction::class,
                                ),
                            ),
                        ),
                    ),
                ),
            ),
        ));