Symfony2: PrePersist/PreUpdate lifecycle-event not fired

Question

Two Entities GalleryAlbum and GalleryImage have OneToMany/ManyToOne relationship:

One GalleryAlbum ==== can have ====> Many Ga

Answer 1

The first time you call persist doctrine will only save $album and not its images. You must specify that you want doctrine to cascade the persist by specifying it in the $images declaration:

    /**
     * @ORM\OneToMany(targetEntity="GalleryImage", mappedBy="parent", cascade={"persist", "remove"})
     */
    protected $images;

This way when you call persist($album) it will also persist your images and should trigger preUpload in your GalleryImage. There are a few different options available for cascading and they are explained well here:

Doctrine transitive persistence cascade operations