ldc-dam/app/Marque.php

<?php

namespace App;

use Illuminate\Database\Eloquent\Model;

class Marque extends Model
{

	/**
     * The primary key associated with the table.
     *
     * @var string
     */
    protected $primaryKey = 'codMarq';

	/**
   * The users that belong to the marque.
   */
   public function users()
   {
	   return $this->belongsToMany('App\User', 'marques_users', 'marque_id', 'user_id');
   }

   /**
	 * The dossier that belong to the marque.
	 */
	 public function dossiers()
	 {
	  return $this->belongsToMany('App\Dossier', 'marques_dossier', 'marque_id', 'dossier_id');
	 }

	 /**
	  * The medias that belong to the marques.
	  */
	 public function medias()
	 {
		 return $this->belongsToMany('App\Media', 'medias_marques', 'marque_id', 'media_id');
	 }

}