public function add()
{
if ($this->picture == 1) {
//si on a une image
$this->id = ArticleManager::add_article($this->title, $this->content, $this->id_receiver, $this->id_author, 1);
} else {
//si on a pas d'image
ArticleManager::add_article($this->title, $this->content, $this->id_receiver, $this->id_author, 0);
}
}
