Relationship understand problem

Hello, i try to get all datas (relation inlcude) from a user table but i cannot get somme values.

class User extends Eloquent implements UserInterface, RemindableInterface {

use UserTrait, RemindableTrait;

protected $table = 'users';
protected $hidden = array('password', 'remember_token');
protected $fillable = array('matricule', 'ip_address', 'firstname', 'lastname', 'username', 'email', 'adress', 'tel', 'gsm', 'password', 'sex', 'code', 'active');

public function horaire(){
    return $this->belongsToMany('Classe', 'horaires', 'user_id', 'classe_id')
    	->withPivot('jour', 'start');
}

}

If i use : $users = User::with('horaire')->get(); in my controller, i can get all data from USER table but not data from "horaire" table.

Here is the structure of my table : horaires [id] [user_id] [classe_id] [cour_id] [description]

Here is the structure of my table : classes [id] [code] [description]

What i want to do : fetch all user with all data from classes and horaires and understand how to call correctly the data from the relation. (example: $users->firstname work fine but $users->relations->horaire->classe->code doesn't work)

Thanks for your help

$users = User::select('users.firstname', 'users.lastname', 'horaires.jour', 'horaires.start', 'classes.code as code_classe', 'classes.classe', 'cours.code as code_cour', 'cours.cour') ->rightJoin('horaires', function($join) { $join->on('horaires.user_id', '=', 'users.id'); }) ->leftJoin('classes', function($join2) { $join2->on('horaires.classe_id', '=', 'classes.id'); }) ->leftJoin('cours', function($join3) { $join3->on('horaires.cour_id', '=', 'cours.id'); }) ->get();

Moderators