How to define manytomany in multi tables?

[hiscaler]

I hava three tables, like

User
id, username

Product
id, title

Article
id, title

In my cast, i hava a favorite action.
I need to record the relationship between product collections and article collections in a single table, How to i do?

[roxblnfk]

Is the User entity necessary there?

I got information about the Product and the Article entities should be stored in the same table.
Bot i dont understand how they should be related.

User has many Product
User has many Article

or

Product has many Article

?

[hiscaler]

Is

User has many Product
User has many Article

use can favorite product or article
Current i use

trait DocFavoriteTrait
{

    #[MorphedHasOne(target: DocFavorite::class, cascade: true, nullable: false, outerKey: 'doc_id', morphKey: 'doc_type')]
    protected ?DocFavorite $docFavorite = null;

    public function getDocFavorite(): ?DocFavorite
    {
        return $this->docFavorite;
    }

    public function addDocFavorite(DocFavorite $docFavorite): void
    {
        $this->docFavorite = $docFavorite;
    }

    public function removeFavorite(): void
    {
        $this->docFavorite = null;
    }

}

looks is ok