public function addArticle(ArticlePanier $articlepanier)
{
if (!$this->session->has('panier')) {
$this->session->set('panier', array($articlepanier->getArticle() => $articlepanier->getQuantity()));
} else {
$panier = $this->session->get('panier');
$panier[$articlepanier->getArticle()] = $articlepanier->getQuantity();
$this->session->set('panier', $panier);
}
$this->session->set('panier_size', sizeof($this->session->get('panier')));
}
