Aug 2, 2016 · Jul 10, 2016 · Jul 10, 2016 · Aug 2, 2016
diff --git a/validation/custom_constraint.rst b/validation/custom_constraint.rst
 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``
 tagand should include an ``alias`` attribute to be used inthevalidatedBy method of your validator class:
 tagso thatthevalidation system knows about it::

 .. configuration-block::

    .. code-block:: yaml

        # 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

        <!-- app/config/services.xml -->
        <service id="validator.unique.your_validator_name" class="Fully\Qualified\Validator\Class\Name">
        <service id="validator.contains_alphanumeric" class="AppBundle\Validator\Constraints\ContainsAlphanumericValidator">
            <argument type="service" id="doctrine.orm.default_entity_manager" />
            <tag name="validator.constraint_validator"alias="alias_name"/>
            <tag name="validator.constraint_validator" />
        </service>

    .. 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,Symfonywill automatically lookfora class named after
 the constraint, with ``Validator`` appended. You can overridethisin your constraint class::
 Now, whenSymfonylooksforthe ``ContainsAlphanumericValidator`` validator, it will
 loadthisservice 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
 ~~~~~~~~~~~~~~~~~~~~~~~~~~
Original file line number	Diff line number	Diff line change
Expand Up		@@ -167,44 +167,42 @@ 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``
		tagand should include an ``alias`` attribute to be used inthevalidatedBy method of your validator class:
		tagso thatthevalidation system knows about it::

		.. configuration-block::

		.. code-block:: yaml

		# 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

		<!-- app/config/services.xml -->
		<service id="validator.unique.your_validator_name" class="Fully\Qualified\Validator\Class\Name">
		<service id="validator.contains_alphanumeric" class="AppBundle\Validator\Constraints\ContainsAlphanumericValidator">
		<argument type="service" id="doctrine.orm.default_entity_manager" />
		<tag name="validator.constraint_validator"alias="alias_name"/>
		<tag name="validator.constraint_validator" />
		</service>

		.. 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,Symfonywill automatically lookfora class named after
		the constraint, with ``Validator`` appended. You can overridethisin your constraint class::
		Now, whenSymfonylooksforthe ``ContainsAlphanumericValidator`` validator, it will
		loadthisservice 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).
Copy link Member xabbuhAug 2, 2016 Choose a reason for hiding this comment The reason will be displayed to describe this comment to others.Learn more. @weaverryan The last sentence reads weird. Was it meant to be this way?

		Class Constraint Validator
		~~~~~~~~~~~~~~~~~~~~~~~~~~
Expand Down