code: public function show($category, $slug = null)
      {
          if (!isset($category) || !isset($slug)) {
              return redirect(config('chatter.routes.home'));
          }
  
          $discussion = Models::discussion()->where('slug', '=', $slug)->first();
          if (is_null($discussion)) {
              abort(404);
          }
  
          $discussion_category = Models::category()->find($discussion->chatter_category_id);
          if ($category != $discussion_category->slug) {
              return redirect(config('chatter.routes.home').'/'.config('chatter.routes.discussion').'/'.$discussion_category->slug.'/'.$discussion->slug);
          }
          $posts = Models::post()->with('user')->where('chatter_discussion_id', '=', $discussion->id)->orderBy(config('chatter.order_by.posts.order'), config('chatter.order_by.posts.by'))->paginate(10);
  
          $chatter_editor = config('chatter.editor');
  
          if ($chatter_editor == 'simplemde') {
              // Dynamically register markdown service provider
              \App::register('GrahamCampbell\Markdown\MarkdownServiceProvider');
          }
  
          $discussion->increment('views');
          
          return view('chatter::discussion', compact('discussion', 'posts', 'chatter_editor'));
      }
docs: Display the specified resource.
  
  @param int $id
  
  @return \Illuminate\Http\Response