diff --git a/validation/custom_constraint.rst b/validation/custom_constraint.rst index a8c1130fe6e..07986b00f34 100644 --- a/validation/custom_constraint.rst +++ b/validation/custom_constraint.rst @@ -167,7 +167,7 @@ Constraint Validators with Dependencies If your constraint validator has dependencies, such as a database connection, it will need to be configured as a service in the Dependency Injection Container. This service must include the ``validator.constraint_validator`` -tag and should include an ``alias`` attribute to be used in the validatedBy method of your validator class: +tag so that the validation system knows about it:: .. configuration-block:: @@ -175,36 +175,34 @@ tag and should include an ``alias`` attribute to be used in the validatedBy meth # app/config/services.yml services: - validator.unique.your_validator_name: - class: Fully\Qualified\Validator\Class\Name + validator.contains_alphanumeric: + class: AppBundle\Validator\Constraints\ContainsAlphanumericValidator tags: - - { name: validator.constraint_validator, alias: alias_name } + - { name: validator.constraint_validator } .. code-block:: xml - + - + .. code-block:: php // app/config/services.php $container - ->register('validator.unique.your_validator_name', 'Fully\Qualified\Validator\Class\Name') - ->addTag('validator.constraint_validator', array('alias' => 'alias_name')); + ->register('validator.contains_alphanumeric', 'AppBundle\Validator\Constraints\ContainsAlphanumericValidator') + ->addTag('validator.constraint_validator'); -As mentioned above, Symfony will automatically look for a class named after -the constraint, with ``Validator`` appended. You can override this in your constraint class:: +Now, when Symfony looks for the ``ContainsAlphanumericValidator`` validator, it will +load this service from the container. - public function validatedBy() - { - return 'Fully\Qualified\ConstraintValidator\Class\Name'; // or 'alias_name' if provided - } +.. note:: -Make sure to use the 'alias_name' when you have configured your validator as a service. Otherwise your validator class -will be simply instantiated without your dependencies. + In earlier versions of Symfony, the tag required an ``alias`` key (usually set + to the class name). This is still allowed your constraint's ``validateBy`` + method can return this alias (instead of a class name). Class Constraint Validator ~~~~~~~~~~~~~~~~~~~~~~~~~~ pFad - Phonifier reborn

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