/**
  * Update the specified resource in storage.
  *
  * @param  int $id
  * @return Response
  */
 public function update($id, CreateArticleRequest $request, Article $article)
 {
     $article_to_update = $article->find($id);
     $uploaded_image = $request->file('image_file');
     $parameter = $request->all();
     if (isset($uploaded_image)) {
         $ext = $uploaded_image->getClientOriginalExtension();
         $newImageName = $article_to_update->id . "." . $ext;
         $uploaded_image->move(base_path() . '/public/img/uploads/article/', $newImageName);
         Image::make(base_path() . '/public/img/uploads/article/' . $newImageName, array('width' => 170, 'height' => 120))->save(base_path() . '/public/img/uploads/article/' . $newImageName);
         unset($parameter['image_file']);
         $parameter['image'] = $newImageName;
         $article_to_update->update($parameter);
     } else {
         $parameter['image'] = $article_to_update->image;
         $article_to_update->update($parameter);
     }
     Session::flash('message', 'The article was successfully edited!.');
     Session::flash('flash_type', 'alert-success');
     return redirect('articles');
 }