/**
  * Update the specified resource in storage.
  *
  * @param  \Illuminate\Http\Request  $request
  * @param  int  $id
  * @return \Illuminate\Http\Response
  */
 public function update(Airline $airline, Request $request)
 {
     //
     $airline->fill($request->input())->save();
     \Session::flash('flash_message', 'Success! Airline updated');
     return redirect('airlines/' . $airline->slug);
 }