Zend Framework 2 - Doctrine 2 - Install and use Gedmo

Question

I found the Gidmo extension which eg provides a timestamp function for creation and update of objects.

Thats what I (and oddly enough nobody else from the Zend guys) need!

I tried including the namespace via use like it is shown here. But no success. The Doctrine validation returns valid and no errors elsewhere but when creating a new object, the created_at attribute is empty.

I also tried this approach but same result.

Any ideas what I'm doing wrong?

composer.json:

"require": {
    ...
    "gedmo/doctrine-extensions": "dev-master"

Entity.php:

use Gedmo\Mapping\Annotation as Gedmo;
...

class Entity {   

/**
 * @ORM\Column(type="datetime")
 * @Gedmo\Timestampable(on="create")
 * @Form\Attributes({"type":"timestamp"})
 * @Form\Options({"label":"Created at"})
 * @Form\Exclude()
 *
 */
protected $created_at;

}

Answer 1

I don't know if you really need an extension for achieving the functionality you're seeking,have a look over the @Version annotation discussed within this section: Optimistic Locking of the Doctrine Documentation.

[EDIT] The @Version is available (as well as all Doctrine ORM mapping annotations) under the namespace Doctrine\ORM\Mapping

Usage for a timestamp field : @Version @ORM\Column(type="datetime")

Usage for an integer field : @Version @Column(type="integer")

Version numbers (not timestamps) should however be preferred as they can not potentially conflict in a highly concurrent environment, unlike timestamps where this is a possibility, depending on the resolution of the timestamp on the particular database platform. (source: Doctrine Documentation)