/**
* The owner of the course can confirm it,
* TODO send an email to all participants
* TODO send bill to the owner
* @param $id
* @return \Illuminate\Http\RedirectResponse
*/
public function confirm($id)
{
#TODO only the course owner should be allowed to do this.
$course = Course::findOrFail($id);
$course->confirmed = true;
$course->save();
$bill = new Bill();
$bill->course()->associate($course);
$bill->save();
$this->sendBill(Auth::user(), $bill);
\Session::flash('flash_message', 'Der Kurs wurde erfolgreich bestätigt');
\Session::flash('flash_message_type', 'success');
return redirect()->action('CourseController@show', [$course->id]);
}
