/**
* Moves a topic from one date to another.
* This action will be called from an ajax request and will return only
* the neccessary output for a single topic element.
*
* @param String $topic_id The id of the topic
* @param String $old_date_id The id of the original date of the topic
* @param String $new_date_id The id of the new date of the topic
* @throws MethodNotAllowedException if request method is not post
* @throws AccessDeniedException if the user is not allowed to execute the
* action (at least tutor of the course)
*/
public function move_topic_action($topic_id, $old_date_id, $new_date_id)
{
if (!Request::isPost()) {
throw new MethodNotAllowedException();
}
if (!$GLOBALS['perm']->have_studip_perm('tutor', $_SESSION['SessionSeminar'])) {
throw new AccessDeniedException();
}
$this->topic = CourseTopic::find($topic_id);
$this->date = new CourseDate($new_date_id);
$this->topic->dates->unsetByPK($old_date_id);
if (!$this->topic->dates->findOneBy('termin_id', $new_date_id)) {
$this->topic->dates[] = CourseDate::find($new_date_id);
}
$this->topic->store();
$this->set_content_type('text/html;charset=windows-1252');
$this->render_template('course/dates/_topic_li.php');
}
