title: EasyAdmin 3.X - How to see related entities `toString` instead of the number of association in the list?
body: <p>I have an entity <code>Product</code> with a ManyToMany relation to an entity <code>Category</code></p>
  <pre><code>/**
   * @ORM\ManyToMany(targetEntity=&quot;App\Domain\Category&quot;, inversedBy=&quot;stalls&quot;)
   */
  private $categories;
  
  //...
  
  /**
   * @return Collection|Category[]
   */
  public function getCategories(): Collection
  {
      return $this-&gt;categories;
  }
  </code></pre>
  <p>In the <code>ProductCrudController</code> class I have the following <code>configureFields</code> method:</p>
  <pre><code>public function configureFields(string $pageName): iterable
  {
      return [
          Field::new('name'),
          Field::new('description'),
          AssociationField::new('categories'),
      ];
  }
  </code></pre>
  <p>When creating/editing a <code>Product</code> everything works as expected in the relation, but in the list of products instead of showing the related categories I see the number of categories the product has. How can I change this behaviour?</p>
  <p>In the following image the first product has 1 category and the second one in the list has 2 different categories. I would like the name of the categories to be shown here.</p>
  <p><a href="https://i.stack.imgur.com/gOWZq.png" rel="noreferrer"><img src="https://i.stack.imgur.com/gOWZq.png" alt="enter image description here" /></a></p>
  <p>As a side note: <code>Category</code> class has a <code>__toString</code> method returning the name of the category.</p>
  <p>EDIT:</p>
  <p>The behaviour I am looking for is the same as the <code>Tags</code> column in the following image:</p>
  <p><a href="https://i.stack.imgur.com/HU9cW.png" rel="noreferrer"><img src="https://i.stack.imgur.com/HU9cW.png" alt="enter image description here" /></a></p>