symfony2 override model validation - symfony

Question

i'm using FOS User Bundle and I want to override the validation file FOS/UserBundle/Resources/config/validaiton.xml:
<constraint name="FOS\UserBundle\Validator\Unique">
<option name="property">usernameCanonical</option>
<option name="message">fos_user.username.already_used</option>
<option name="groups">
<!-- <value>Registration</value> -->
<value>Profile</value>
</option>
</constraint>
username is not in my Registration form (I just set it to hidden), that's the validation should not produce any error...
Maybe there is a better way to remove the username of the form...

Answer 1

To remove the username field of the form in a proper way, you should override the RegistrationFormType, creating your own and extending it from the original FOSUserBundle
<?php
namespace Acme\UserBundle\Form\Type;
use Symfony\Component\Form\FormBuilder;
use FOS\UserBundle\Form\Type\RegistrationFormType as BaseType;
class RegistrationFormType extends BaseType
{
public function buildForm(FormBuilder $builder, array $options)
{
$builder->add('email', 'email')
->add('plainPassword', 'repeated', array('type' => 'password'))
// your other custom fields, if any.
}
}
Now, you should declare the overrided form as a service, and then tell to FOSUserBundle configuration file that you are using now an overrided form. Here is the complete documentation.

Answer 2

You can put entity validation info in any validation.yml file. So you can do
#validation.yml
FQCN\Of\User\Entity:
constraints:
- FOS\UserBundle\Validator\Unique:
property: usernameCanonical
groups: [Profile]
message: fos_user.username.already_used
properties:
# property validations here