public function home()
 {
     $manager = new QuestionManager();
     $manager2 = new TagManager();
     $manager3 = new ProfilManager();
     $questions = $manager->getAllQuestions();
     $tags = array();
     foreach ($questions as $value) {
         $tags[] = $manager2->getTags($value['id']);
     }
     $profils = $manager3->getAllUsers();
     $this->show('default/home', ['questions' => $questions, 'tags' => $tags, 'profils' => $profils]);
 }