/**
  * Show the form for editing the specified resource.
  *
  * @param int $id            
  * @return Response
  */
 public function edit($id)
 {
     $article = Article::find($id);
     $categories_list = Categories::get();
     return view('admin.edit_article')->with(['article' => $article, 'categories_list' => $categories_list]);
 }