(doctrine2 + symfony2) cascading remove : integrity constraint violation 1451

Question

First, sorry for my poor English...

I got four entities : User, Application, Bundle & Entity. Here are their relations (with cascading persist & remove, see

Answer 1

So, thanks to this French forum, I fixed the problem.

I needed to add nullable=true & onDelete="SET NULL" in @ORM\JoinColumn

Here is the workable configuration, maybe it will help someone :

#User.
    /**
     * @ORM\OneToMany(targetEntity="\sfCommands\ContentBundle\Entity\Application", mappedBy="user", cascade={"remove"}, orphanRemoval=true)
     * @ORM\OrderBy({"name" = "ASC"})
     */
    protected $applications;

    /**
     * @ORM\OneToOne(targetEntity="\sfCommands\ContentBundle\Entity\Entity")
     * @ORM\JoinColumn(name="entity1_id", referencedColumnName="id", nullable=true, onDelete="SET NULL")
     */
    private $entity1;

    /**
     * @ORM\OneToOne(targetEntity="\sfCommands\ContentBundle\Entity\Entity")
     * @ORM\JoinColumn(name="entity2_id", referencedColumnName="id", nullable=true, onDelete="SET NULL")
     */
    private $entity2;

#Application.
    /**
     * @ORM\OneToMany(targetEntity="\sfCommands\ContentBundle\Entity\Bundle", mappedBy="application", cascade={"remove"}, orphanRemoval=true)
     * @ORM\OrderBy({"name" = "ASC"})
     */
    protected $bundles;

    /**
     * @ORM\ManyToOne(targetEntity="\sfCommands\UserBundle\Entity\User", inversedBy="applications", cascade={"persist"})
     * @ORM\JoinColumn(name="user_id", referencedColumnName="id", nullable=true, onDelete="SET NULL")
     */
    protected $user;

#Bundle.
    /**
     * @ORM\ManyToOne(targetEntity="\sfCommands\ContentBundle\Entity\Application", inversedBy="bundles", cascade={"persist"})
     * @ORM\JoinColumn(name="application_id", referencedColumnName="id", nullable=true, onDelete="SET NULL")
     */
    protected $application;

    /**
     * @ORM\OneToMany(targetEntity="\sfCommands\ContentBundle\Entity\Entity", mappedBy="bundle", cascade={"remove"}, orphanRemoval=true)
     * @ORM\OrderBy({"name" = "ASC"})
     */
    protected $entitys;

#Entity.
    /**
     * @ORM\ManyToOne(targetEntity="\sfCommands\ContentBundle\Entity\Bundle", inversedBy="entitys", cascade={"persist"})
     * @ORM\JoinColumn(name="bundle_id", referencedColumnName="id", nullable=true, onDelete="SET NULL")
     */
    protected $bundle;