/**
  * Show the form for editing the specified resource.
  *
  * @param  int  $id
  * @return \Illuminate\Http\Response
  */
 public function edit($id)
 {
     $issues = Issue::lists('title', 'id');
     $file = File::findOrFail($id);
     return view('file.edit', compact('file', 'issues'));
 }