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How to Register Custom DQL Functions

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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:

YAML

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

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

PHP

// app/config/config.php
$container->loadFromExtension('doctrine', array(
    'orm' => array(
        // ...

        'entity_managers' => array(
            'default' => array(
                // ...

                'dql' => array(
                    'string_functions' => array(
                        'test_string'   => 'Acme\HelloBundle\DQL\StringFunction',
                        'second_string' => 'Acme\HelloBundle\DQL\SecondStringFunction',
                    ),
                    'numeric_functions' => array(
                        'test_numeric' => 'Acme\HelloBundle\DQL\NumericFunction',
                    ),
                    'datetime_functions' => array(
                        'test_datetime' => 'Acme\HelloBundle\DQL\DatetimeFunction',
                    ),
                ),
            ),
        ),
    ),
));

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