Nest articles under categories

Author: viseztrance

app/controllers/articles_controller.rb

@@ -19,15 +19,17 @@ def create
     @article = Article.new(article_params)
 
     if @article.save
-      redirect_to @article, notice: 'Article was successfully created.'
+      redirect_to [@article.category, @article],
+                  notice: 'Article was successfully created.'
     else
       render :new
     end
   end
 
   def update
     if @article.update(article_params)
-      redirect_to @article, notice: 'Article was successfully updated.'
+      redirect_to [@article.category, @article],
+                  notice: 'Article was successfully updated.'
     else
       render :edit
     end

app/views/articles/_form.html.erb

@@ -6,7 +6,7 @@
   </ul>
 <% end %>
 
-<%= form_for article do |f| %>
+<%= form_for [article.category, article] do |f| %>
   <p><%= f.text_field :title, placeholder: "Title" %></p>
 
   <p><%= f.text_area :content, placeholder: "Content" %></p>

app/views/articles/index.html.erb

@@ -3,7 +3,7 @@
 <% @articles.each do |article| %>
   <article>
     <h3>
-      <%= link_to article.title, article %>
+      <%= link_to article.title, [article.category, article] %>
     </h3>
 
     <p>

app/views/articles/show.html.erb

@@ -2,7 +2,7 @@
   <h3>
     <%= @article.title %>
     <small>
-      <%= link_to "Edit", [:edit, @article] %>
+      <%= link_to "Edit", [:edit, @article.category, @article] %>
     </small>
   </h3>
 

config/routes.rb

@@ -3,4 +3,8 @@
   root to: "articles#index"
 
   resources :articles
+
+  resources :categories do
+    resources :articles
+  end
 end

spec/controllers/articles_controller_spec.rb

@@ -2,19 +2,21 @@
 
 RSpec.describe ArticlesController do
   describe "#show" do
+    let(:category) { FactoryBot.create(:category) }
+
     before do
-      FactoryBot.create(:article, permalink: "my-permalink")
+      FactoryBot.create(:article, permalink: "my-permalink", category: category)
     end
 
     it "renders successfully" do
-      get :show, params: { id: "my-permalink" }
+      get :show, params: { id: "my-permalink", category_id: category }
 
       expect(response.status).to eql(200)
     end
 
     context "without correct permalink" do
       subject(:perform_request) {
-        get :show, params: { id: "wrong-permalink" }
+        get :show, params: { id: "wrong-permalink", category_id: category }
       }
 
       it "raises error" do