Question

I have an entity “Movie” which has a unique constraint through doctrine annotation. Based on the movie entity I have auto generated a CRUD layer. When I now try to add a new movie I get the following exception:

Only field names mapped by Doctrine can be validated for uniqueness.

When the constraint is removed everything works fine. Do somebody has an idea where the problem lays and how I can resolve it?

My guessing is the entity, because it is new, is not sync with the EntityManager and therefore could not check the constraint. Am I’close?

I’m using Symfony 2.0.1 with Doctrine 2.1.1, MySQL as Database.

Thanks,
-lony

The “Movie” Entity:

/**
 * @ORM\Table()
 * @ORM\Entity
 * @ORM\InheritanceType("JOINED")
 * @ORM\DiscriminatorColumn(name="type", type="string")
 * @ORM\DiscriminatorMap({"movie" = "Movie", "series" = "Series"})
 * 
 * @DoctrineAssert\UniqueEntity("title_orginal")
 */
class Movie {

  /**
   * @var integer $id
   *
   * @ORM\Column(name="id", type="integer")
   * @ORM\Id
   * @ORM\GeneratedValue(strategy="AUTO")
   */
  private $id;

  /**
   * @var string $titleOrginal
   *
   * @ORM\Column(name="title_orginal", type="string", length=255, unique="true")
   */
  private $titleOrginal;

  ..

Answer 1

Your syntax is wrong.
Use this:

@DoctrineAssert\UniqueEntity(fields={"title_orginal"})

instead of

@DoctrineAssert\UniqueEntity("title_orginal")

You can then customize the violation message like this :

@DoctrineAssert\UniqueEntity(fields={"title_orginal", message="my.custom.message"})

and translate this message by using a validators.xliff file (it must be named like that).
I tell you this because I struggled the other day with it and was obliged to debug to find about this validators.xliff naming convention.