/**
  * Current user dislikes a project.
  *
  * @param  \App\Model\Project $project
  * @return \Illuminate\Http\Response
  */
 public function dislike(Project $project)
 {
     $this->middleware('auth');
     if ($user = auth()->user()) {
         $project->likes()->detach($user->id);
         return Redirect::route('projects.show', $project->slug)->with('flash_success', 'Você descurtiu o projeto.');
     } else {
         $error = 'Operação não permitida.';
     }
     return Redirect::route('projects.show', $project->slug)->with('flash_danger', $error);
 }