In my database, I have a table T
and a view V
.
The view has some columns of my table and other data (from other tables).
In Symfony, I declared my view as a read-only Entity.
/**
* @ORM\Table(name="V")
* @ORM\Entity(readOnly=true, repositoryClass="AppBundle\Entity\Repository\VRepository")
*/
class V
{
In my T
entity, I did a Join :
/**
* @ORM\OneToOne(targetEntity="V")
* @ORM\JoinColumn(name="T_id", referencedColumnName="V_id")
*/
private $view;
And I added just the getter :
/**
* Get view
*
* @return \AppBundle\Entity\V
*/
public function getView()
{
return $this->view;
}
Everything is working well when I want to read and show data.
But I have a problem after persisting a new T
entity.
Symfony seems to lost posted data of my form when I create a new T
entity (editAction()
works perfectly).
An exception occurred while executing 'INSERT INTO T (T_id, T_name, updated_at) VALUES (?, ?, ?)' with params [null, null, "2017-09-01 15:30:41"]:
SQLSTATE[23000]: Integrity constraint violation: 1048 Field 'T_id' cannot be empty (null)
When I remove ORM annotations of the $view
property, it creates correctly my new record T
in the database.
I think the problem is due to the fact that the V
entity (the record in my SQL view) will exist just after the creation of T
. And when I persist/flush data in Symfony, V
doesn't exist yet. They are "created" at the same time.
I tried to add Doctrine @HasLifecycleCallbacks
on my T
entity and the @PostPersist
event on the getView()
method but it doesn't change anything...
Any idea to differ the Join after the creation of the entity ?
I know it's not conventional to use views as entities with Symfony but I haven't other choice.
I've just checked, it works fine with Bidirectional One-To-One relation
In my case tables are defined like:
create table T (`id` int(11) NOT NULL AUTO_INCREMENT, name varchar(100), primary key (id));
create view V as select id as entity, name, '123' as number from T;
Annotations in T:
/**
* @ORM\Table(name="T")
* @ORM\Entity()
*/
class T
{
/**
* @var int
*
* @ORM\Column(name="id", type="integer")
* @ORM\Id
* @ORM\GeneratedValue(strategy="AUTO")
*/
private $id;
/**
* @var string
*
* @ORM\Column(name="name", type="string", length=255, nullable=true)
*/
private $name;
/**
* @var V
*
* @ORM\OneToOne(targetEntity="V", mappedBy="entity")
*/
private $view;
Annotations in V:
/**
* @ORM\Table(name="V")
* @ORM\Entity(readOnly=true)
*/
class V
{
/**
* @var string
*
* @ORM\Column(name="name", type="string", length=255, nullable=true)
*/
private $name;
/**
* @var string
*
* @ORM\Column(name="number", type="string", length=255, nullable=true)
*/
private $number;
/**
* @var T
*
* @ORM\Id
* @ORM\OneToOne(targetEntity="T", inversedBy="view")
* @ORM\JoinColumn(name="entity", referencedColumnName="id")
*/
private $entity;
And a test snippet to prove that it saves, updates and reads fine:
public function testCRUD()
{
/** @var EntityManager $manager */
$manager = $this->client->getContainer()->get('doctrine.orm.default_entity_manager');
$t = new T();
$t->setName('Me');
$manager->persist($t);
$manager->flush();
$t->setName('He');
$manager->flush();
$manager->clear();
/** @var T $t */
$t = $manager->find(T::class, $t->getId());
$this->assertEquals('He', $t->getView()->getName());
}