ldc-dam/app/Models/Article.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;

class Article extends Model
{
    /**
     * The medias that belong to the article.
     */
    public function medias()
    {
        return $this->belongsToMany('App\Models\Media', 'medias_articles', 'article_id', 'media_id');
    }
}