public function save(Article $article)
 {
     $articleData = array('art_name' => $article->getName(), 'art_desc' => $article->getDesc(), 'art_price' => $article->getPrice(), 'art_cat' => $article->getCat(), 'art_dispo' => $article->getDispo());
     if ($article->getId()) {
         // The article has already been saved : update it
         $this->getDb()->update('t_article', $articleData, array('art_id' => $article->getId()));
     } else {
         // The article has never been saved : insert it
         $this->getDb()->insert('t_article', $articleData);
         // Get the id of the newly created article and set it on the entity.
         $id = $this->getDb()->lastInsertId();
         $article->setId($id);
     }
 }