Extract BubbleScoped

app/controllers/boosts_controller.rb

@@ -1,5 +1,5 @@
 class BoostsController < ApplicationController
-  before_action :set_bubble
+  include BubbleScoped
 
   def index
   end
@@ -10,9 +10,4 @@ class BoostsController < ApplicationController
   def create
     @bubble.boosts.create!
   end
-
-  private
-    def set_bubble
-      @bubble = Bubble.find(params[:bubble_id])
-    end
 end

app/controllers/comments_controller.rb

@@ -1,5 +1,5 @@
 class CommentsController < ApplicationController
-  before_action :set_bubble
+  include BubbleScoped
 
   def create
     @bubble.comments.create!(comment_params)
@@ -10,8 +10,4 @@ class CommentsController < ApplicationController
     def comment_params
       params.require(:comment).permit(:body)
     end
-
-    def set_bubble
-      @bubble = Bubble.find(params[:bubble_id])
-    end
 end

app/controllers/concerns/bubble_scoped.rb

@@ -0,0 +1,12 @@
+module BubbleScoped
+  extend ActiveSupport::Concern
+
+  included do
+    before_action :set_bubble
+  end
+
+  private
+    def set_bubble
+      @bubble = Bubble.find(params[:bubble_id])
+    end
+end