Easyadminbundle: How handle ManyToMany relationshp from both side?

[nickicool]

Hi!

I'm trying to make a gallery where the images and categories have a relationship ManyToMany. All good, but edit when I can only from the owner side. Now even fields to edit relations with the "slave" part, no.

How can I add the ability to handle both sides? It is possible?

[javiereguiluz]

According to past issues reported to this repo, this is probably related to Doctrine and not this bundle. I show bellow the example I always use to set up a bidirectional many-to-many relation in Doctrine, so you can check if you have all these needed methods and configs:

// src/Entity/Article.php
use Doctrine\ORM\Mapping as ORM;
use Doctrine\Common\Collections\ArrayCollection;

/**
 * @ORM\Entity()
 */
class Article
{
    /**
     * @ORM\Id()
     * @ORM\GeneratedValue(strategy="AUTO")
     * @ORM\Column(type="integer", name="id")
     */
    protected $id;

    /**
     * @ORM\ManyToMany(targetEntity="Tag", inversedBy="articles")
     */
    protected $tags;

    public function __construct()
    {
        $this->tags = new ArrayCollection();
    }

    public function addTag(Tag $tag)
    {
        if ($this->tags->contains($tag)) {
            return;
        }

        $this->tags->add($tag);
        $tag->addArticle($this);
    }

    public function removeTag(Tag $tag)
    {
        if (!$this->tags->contains($tag)) {
            return;
        }

        $this->tags->removeElement($tag);
        $tag->removeArticle($this);
    }
}

// src/Entity/Tag.php
use Doctrine\ORM\Mapping as ORM;
use Doctrine\Common\Collections\ArrayCollection;

/**
 * @ORM\Entity()
 */
class Tag
{
    /**
     * @ORM\Id()
     * @ORM\GeneratedValue(strategy="AUTO")
     * @ORM\Column(type="integer", name="id")
     */
    protected $id;

    /**
     * @ORM\ManyToMany(targetEntity="Article", mappedBy="tags")
     */
    protected $articles;

    public function __construct()
    {
        $this->articles = new ArrayCollection();
    }

    public function addArticle(Article $article)
    {
        if ($this->articles->contains($article)) {
            return;
        }

        $this->articles->add($article);
        $article->addTag($this);
    }

    public function removeArticle(Article $article)
    {
        if (!$this->articles->contains($article)) {
            return;
        }

        $this->articles->removeElement($article);
        $article->removeTag($this);
    }
}

[nickicool]

@Thanks javiereguiluz for your answer and work! Yes, it works! But had to add this line (maybe is useful to someone):

easy_admin:
    entities:
        Tag:
            form:
                fields:
                    - { property: 'articles', type_options: { by_reference: false } }

[ricard-apr]

Thank you very much! It happens to me also and with your solution it was solved the problem.

[javiereguiluz]

Closing as fixed. Thanks!