/**
* edits enquete
*/
public function edit()
{
$json = $_POST['json'];
$json = stripslashes($json);
$enquete = json_decode($json, true);
$name = $enquete['name'];
$introduction = $enquete['introduction'];
$start_date = $enquete['start_date'];
$end_date = $enquete['end_date'];
$questions = $enquete['questions'];
$deleted_questions = $enquete['deleted_question'];
$deleted_attributes = $enquete['deleted_attributes'];
$enquete_id = $enquete['id'];
$user_id = $_SESSION['user_id'];
Enquete::edit($name, $introduction, $start_date, $end_date, $questions, $deleted_questions, $deleted_attributes, $enquete_id, $user_id);
}