IndexBy in OneToMany Annotation is ignored

[karatektus]

I need some of my relations to be indexed for easier access. Therefore i Use the following property annotation:

/**
   * @ORM\OneToMany(targetEntity="App\Entity\Category", mappedBy="parent", indexBy="slug")
   */
    private $subcategories;

->getSubcategories()->toArray()

does return an array indexed with the slug. so it does work. but the serializer does respect that.

On the other hand, the serializer does respect it when I use doctrine directly via

$categories = $doctrine
            ->getRepository(Category::class)
            ->createQueryBuilder('c', 'c.slug');

My current solution is to not expose the property directly but use the dumbest virtualproperty ever:

    /**
     * @return Collection
     * 
     * @Serializer\VirtualProperty()
     * @Serializer\SerializedName("subcategories")
     * @Serializer\Expose()
     */
    public function getSubCategoriesWithKey()
    {
            return $this->getSubcategories();
    }

but that feels pretty silly :x

[goetas]

I do not see any @Serializer\Type annotation in your snippets...

You might need something as @Serializer\Type("ArrayCollection<string,App\Entity\Category>")

[karatektus]

well. that fixed it. Thanks!