> Symfony中文手册 > 如何注册自定义DQL函数

如何注册自定义DQL函数

Doctrine允许你指定自定义的DQL函数。有关此主题的更多信息,请阅读Doctrine的cookbook“DQL用户定义函数”的文章。

在symfony中,你可以按照下面的方式,注册你的自定义DQL函数:

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# 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
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<!-- 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>
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// app/config/config.php
$container->loadFromExtension('doctrine', array(
    'orm' => array(
        // ...
        'dql' => array(
            'string_functions' => array(
                'test_string'   => 'AppBundle\DQL\StringFunction',
                'second_string' => 'AppBundle\DQL\SecondStringFunction',
            ),
            'numeric_functions' => array(
                'test_numeric' => 'AppBundle\DQL\NumericFunction',
            ),
            'datetime_functions' => array(
                'test_datetime' => 'AppBundle\DQL\DatetimeFunction',
            ),
        ),
    ),
));