Introduce a Bubble.tagged_with scope to simplify controller finding

app/controllers/bubbles_controller.rb

@@ -9,8 +9,8 @@ class BubblesController < ApplicationController
 
     if params[:tag_id]
       @tag = Current.account.tags.find(params[:tag_id])
-      @bubbles = @bubbles.joins(:tags).where(tags: @tag)
-      @most_active_bubbles = @most_active_bubbles.joins(:tags).where(tags: @tag)
+      @bubbles = @bubbles.tagged_with(@tag)
+      @most_active_bubbles = @most_active_bubbles.tagged_with(@tag)
     end
   end
 

app/models/bubble.rb

@@ -1,5 +1,5 @@
 class Bubble < ApplicationRecord
-  include Assignable, Colored, Searchable
+  include Assignable, Colored, Searchable, Taggable
 
   belongs_to :bucket
   belongs_to :creator, class_name: "User", default: -> { Current.user }
@@ -7,9 +7,6 @@ class Bubble < ApplicationRecord
   has_many :comments, dependent: :destroy
   has_many :boosts, dependent: :destroy
 
-  has_many :taggings, dependent: :destroy
-  has_many :tags, through: :taggings
-
   has_one_attached :image, dependent: :purge_later
 
   scope :reverse_chronologically, -> { order(created_at: :desc, id: :desc) }

app/models/bubble/taggable.rb

@@ -0,0 +1,10 @@
+module Bubble::Taggable
+  extend ActiveSupport::Concern
+
+  included do
+    has_many :taggings, dependent: :destroy
+    has_many :tags, through: :taggings
+
+    scope :tagged_with, ->(tag) { joins(:taggings).where(taggings: { tag: tag }) }
+  end
+end