Load videos through answer in all actions

app/controllers/admin/poll/questions/answers/videos_controller.rb

@@ -1,17 +1,14 @@
 class Admin::Poll::Questions::Answers::VideosController < Admin::Poll::BaseController
-  before_action :load_answer, only: [:index, :new, :create]
-  before_action :load_video, only: [:edit, :update, :destroy]
+  load_resource :answer, class: "::Poll::Question::Answer"
+  load_resource class: "::Poll::Question::Answer::Video", through: :answer
 
   def index
   end
 
   def new
-    @video = ::Poll::Question::Answer::Video.new
   end
 
   def create
-    @video = ::Poll::Question::Answer::Video.new(video_params)
-
     if @video.save
       redirect_to admin_answer_videos_path(@answer),
                notice: t("flash.actions.create.poll_question_answer_video")
@@ -25,7 +22,7 @@ class Admin::Poll::Questions::Answers::VideosController < Admin::Poll::BaseContr
 
   def update
     if @video.update(video_params)
-      redirect_to admin_answer_videos_path(@video.answer), notice: t("flash.actions.save_changes.notice")
+      redirect_to admin_answer_videos_path(@answer), notice: t("flash.actions.save_changes.notice")
     else
       render :edit
     end
@@ -34,7 +31,7 @@ class Admin::Poll::Questions::Answers::VideosController < Admin::Poll::BaseContr
   def destroy
     @video.destroy!
     notice = t("flash.actions.destroy.poll_question_answer_video")
-    redirect_to admin_answer_videos_path(@video.answer), notice: notice
+    redirect_to admin_answer_videos_path(@answer), notice: notice
   end
 
   private
@@ -44,14 +41,6 @@ class Admin::Poll::Questions::Answers::VideosController < Admin::Poll::BaseContr
     end
 
     def allowed_params
-      [:title, :url, :answer_id]
-    end
-
-    def load_answer
-      @answer = ::Poll::Question::Answer.find(params[:answer_id])
-    end
-
-    def load_video
-      @video = ::Poll::Question::Answer::Video.find(params[:id])
+      [:title, :url]
     end
 end

app/views/admin/poll/questions/answers/videos/_form.html.erb

@@ -2,8 +2,6 @@
 
   <%= render "shared/errors", resource: @video %>
 
-  <%= f.hidden_field :answer_id, value: @video.answer_id || @answer.id %>
-
   <div class="row">
     <div class="small-12 column">
 

app/views/admin/poll/questions/answers/videos/edit.html.erb

@@ -5,5 +5,5 @@
 </h2>
 
 <div class="poll-question-answer-video-form">
-  <%= render "form", form_url: admin_video_path(@video) %>
+  <%= render "form", form_url: admin_answer_video_path(@answer, @video) %>
 </div>

app/views/admin/poll/questions/answers/videos/index.html.erb

@@ -7,7 +7,7 @@
 </h2>
 
 <%= link_to t("admin.answers.videos.index.add_video"),
-            new_admin_answer_video_path,
+            new_admin_answer_video_path(@answer),
             class: "button success float-right" %>
 
 <div>
@@ -22,7 +22,7 @@
     </thead>
 
     <tbody>
-      <% @answer.videos.each do |video| %>
+      <% @videos.each do |video| %>
         <tr id="<%= dom_id(video) %>" class="poll_question_answer_video">
           <td><%= video.title %></td>
           <td><%= link_to video.url, video.url %></td>

app/views/admin/poll/questions/answers/videos/new.html.erb

@@ -5,5 +5,5 @@
 </h2>
 
 <div class="poll-question-answer-video-form">
-  <%= render "form", form_url: admin_answer_videos_path %>
+  <%= render "form", form_url: admin_answer_videos_path(@answer) %>
 </div>

config/routes/admin.rb

@@ -172,7 +172,7 @@ namespace :admin do
       resources :answers, except: [:index, :show, :destroy], controller: "questions/answers", shallow: false
       resources :answers, only: [], controller: "questions/answers" do
         resources :images, controller: "questions/answers/images"
-        resources :videos, controller: "questions/answers/videos"
+        resources :videos, controller: "questions/answers/videos", shallow: false
         resources :documents, only: [:index, :create], controller: "questions/answers/documents"
       end
       post "/answers/order_answers", to: "questions/answers#order_answers"
@@ -328,5 +328,5 @@ resolve "Poll::Question::Answer" do |answer, options|
 end
 
 resolve "Poll::Question::Answer::Video" do |video, options|
-  [:video, options.merge(id: video)]
+  [:answer, :video, options.merge(answer_id: video.answer, id: video)]
 end

spec/routing/polymorphic_routes_spec.rb

@@ -97,7 +97,7 @@ describe "Polymorphic routes" do
     it "routes poll answer videos" do
       video = create(:poll_answer_video)
 
-      expect(admin_polymorphic_path(video)).to eq admin_video_path(video)
+      expect(admin_polymorphic_path(video)).to eq admin_answer_video_path(video.answer, video)
     end
 
     it "routes milestones for resources with no hierarchy" do

spec/system/admin/poll/questions/answers/videos/videos_spec.rb

@@ -26,7 +26,7 @@ describe "Videos", :admin do
   scenario "Update" do
     video = create(:poll_answer_video, answer: answer)
 
-    visit edit_admin_video_path(video)
+    visit edit_admin_answer_video_path(answer, video)
 
     fill_in "Title", with: title
     fill_in "External video", with: url