Trying to join 2 different entities in different bundles, failed - php

Question

I'm trying to launch a query in Symfony2 (I'm quite new), where I need to join two different entities, in different bundles:
Candc/ComercioBundle/Entity/Venta/ItemVentaCarta And
Candc/ProductoBundle/Entity/Producto.
They have a relation manytoone-onetomany.
Class Producto/////
/**
*
* #ORM\Id
* #ORM\Column(name="id", type="integer")
* #ORM\OneToMany(targetEntity="Candc\ComercioBundle\Venta\ItemVentaCarta", mappedBy="Producto")
* #ORM\GeneratedValue(strategy="AUTO")
*/
private $id;
And:
Class ItemVentaCarta//////
/**
* catalog card wich is referenced.
* #ORM\ManyToOne(targetEntity="\Candc\ProductoBundle\Entity\Producto", inversedBy="ItemVentaCarta")
* #ORM\JoinColumn(name="carta_id", referencedColumnName="id", nullable=false)
*/
private $carta;
This is the query I'm launching:
public function findLastProducts(){
//this is what I need to do in SQL language :
$consulta = 'SELECT * FROM c_venta_item
LEFT JOIN c_venta_item_carta
ON c_venta_item.id=c_venta_item_carta.id
LEFT JOIN usuario ON c_venta_item.user_id = usuario.id
LEFT JOIN producto ON c_venta_item_carta.carta_id = producto.id';
return $this->getEntityManager()
->createQuery("SELECT ivc
FROM \Candc\ComercioBundle\Entity\Venta\ItemVentaCarta ivc
LEFT JOIN ivc.producto p
WHERE ivc.carta = p.id")
->getResult();
}
I'm in Symfony 2.7.7 and the exception I get is that one:
[Semantical Error] line 0, col 105 near 'p
WHERE': Error: Class Candc\ComercioBundle\Entity\Venta\ItemVentaCarta has no association named producto
(I tried both producto and Producto, to avoid Typo errors)
Also searched in the forum, founded many post related, but cant solve it.
I cleared cache, and also tried a schema update, but I get a message that says:
"there's nothing to update buddy, your db is already sync with the entity metadata"

Answer 1

Hi DQL is bound to the object properties, not the mapped entity name, please update your code by doing the following:
Class ItemVentaCarta//////
/**
* catalog card wich is referenced.
* #ORM\ManyToOne(targetEntity="\Candc\ProductoBundle\Entity\Producto", inversedBy="ItemVentaCarta")
* #ORM\JoinColumn(name="carta_id", referencedColumnName="id", nullable=false)
*/
private $producto; // previously $carta
Also, it looks like your query needs changing to:
SELECT ivc
FROM \Candc\ComercioBundle\Entity\Venta\ItemVentaCarta ivc
LEFT JOIN ivc.producto p ON ivc.carta = p.id