Debugging the validator constraints

Author: loic425

validation.rst

@@ -719,6 +719,81 @@ constraint that's applied to the class itself. When that class is validated,
 methods specified by that constraint are simply executed so that each can
 provide more custom validation.
 
+Debugging the constraints
+-------------------------
+
+The ``debug:validator 'App\Entity\DummyClassOne'`` command lists validation constraints of ``App\Entity\DummyClassOne`` resource.
+
+.. code-block:: terminal
+
+    $ php bin/console debug:validator 'App\Entity\DummyClassOne'
+
+        App\Entity\DummyClassOne
+        -----------------------------------------------------
+
+        +---------------+--------------------------------------------------+---------+------------------------------------------------------------+
+        | Property      | Name                                             | Groups  | Options                                                    |
+        +---------------+--------------------------------------------------+---------+------------------------------------------------------------+
+        | firstArgument | Symfony\Component\Validator\Constraints\NotBlank | Default | [                                                          |
+        |               |                                                  |         |   "message" => "This value should not be blank.",          |
+        |               |                                                  |         |   "allowNull" => false,                                    |
+        |               |                                                  |         |   "normalizer" => null,                                    |
+        |               |                                                  |         |   "payload" => null                                        |
+        |               |                                                  |         | ]                                                          |
+        | firstArgument | Symfony\Component\Validator\Constraints\Email    | Default | [                                                          |
+        |               |                                                  |         |   "message" => "This value is not a valid email address.", |
+        |               |                                                  |         |   "mode" => null,                                          |
+        |               |                                                  |         |   "normalizer" => null,                                    |
+        |               |                                                  |         |   "payload" => null                                        |
+        |               |                                                  |         | ]                                                          |
+        +---------------+--------------------------------------------------+---------+------------------------------------------------------------+
+
+You can also list validation constraints for all resources of a path.
+
+.. code-block:: terminal
+
+    $ php bin/console debug:validator src/Entity
+
+        App\Entity\DummyClassOne
+        ------------------------
+
+        +---------------+--------------------------------------------------+---------+------------------------------------------------------------+
+        | Property      | Name                                             | Groups  | Options                                                    |
+        +---------------+--------------------------------------------------+---------+------------------------------------------------------------+
+        | firstArgument | Symfony\Component\Validator\Constraints\NotBlank | Default | [                                                          |
+        |               |                                                  |         |   "message" => "This value should not be blank.",          |
+        |               |                                                  |         |   "allowNull" => false,                                    |
+        |               |                                                  |         |   "normalizer" => null,                                    |
+        |               |                                                  |         |   "payload" => null                                        |
+        |               |                                                  |         | ]                                                          |
+        | firstArgument | Symfony\Component\Validator\Constraints\Email    | Default | [                                                          |
+        |               |                                                  |         |   "message" => "This value is not a valid email address.", |
+        |               |                                                  |         |   "mode" => null,                                          |
+        |               |                                                  |         |   "normalizer" => null,                                    |
+        |               |                                                  |         |   "payload" => null                                        |
+        |               |                                                  |         | ]                                                          |
+        +---------------+--------------------------------------------------+---------+------------------------------------------------------------+
+
+        App\Entity\DummyClassTwo
+        ------------------------
+
+        +---------------+--------------------------------------------------+---------+------------------------------------------------------------+
+        | Property      | Name                                             | Groups  | Options                                                    |
+        +---------------+--------------------------------------------------+---------+------------------------------------------------------------+
+        | firstArgument | Symfony\Component\Validator\Constraints\NotBlank | Default | [                                                          |
+        |               |                                                  |         |   "message" => "This value should not be blank.",          |
+        |               |                                                  |         |   "allowNull" => false,                                    |
+        |               |                                                  |         |   "normalizer" => null,                                    |
+        |               |                                                  |         |   "payload" => null                                        |
+        |               |                                                  |         | ]                                                          |
+        | firstArgument | Symfony\Component\Validator\Constraints\Email    | Default | [                                                          |
+        |               |                                                  |         |   "message" => "This value is not a valid email address.", |
+        |               |                                                  |         |   "mode" => null,                                          |
+        |               |                                                  |         |   "normalizer" => null,                                    |
+        |               |                                                  |         |   "payload" => null                                        |
+        |               |                                                  |         | ]                                                          |
+        +---------------+--------------------------------------------------+---------+------------------------------------------------------------+
+
 Final Thoughts
 --------------