Overriding Form Validation messages on symfony2

Question

How to override the form validation messages in symfony2. Though there is a validation.xml file related model classes. I think it validates a form based on html5.

Answer 1

You can change the message of each validator thanks to the message option when declaring the assert:

/**
     * @ORM\Column(type="string", length=255, unique=true)
     * @Assert\NotBlank(
     *     message="You have to choose a username (this is my custom validation message).",
     *     groups={"registration", "account", "oauth"}
     * )

Also you can apply translation by creating the file MyBundle/Resources/translations/validators.fr.xliff