Add comments'

app/controllers/comments_controller.rb

@@ -0,0 +1,13 @@
+class CommentsController < ApplicationController
+  before_action :set_article
+
+  def create
+    @article.comments.create! params.required(:comment).permit(:content)
+    redirect_to @article
+  end
+
+  private
+    def set_article
+      @article = Article.find(params[:article_id])
+    end
+end

app/helpers/comments_helper.rb

@@ -0,0 +1,2 @@
+module CommentsHelper
+end

app/models/article.rb

@@ -1,5 +1,5 @@
 class Article < ApplicationRecord
-  has_rich_text :text
+  has_many :comments, dependent: :destroy
   has_rich_text :content
   validates_presence_of :title
 end

app/models/comment.rb

@@ -0,0 +1,4 @@
+class Comment < ApplicationRecord
+  belongs_to :article
+  broadcasts_to :article
+end

app/views/articles/_article.html.erb

@@ -5,8 +5,16 @@
   </p>
 
   <p>
-    <strong>Text:</strong>
-    <%= article.text %>
+    Posted <%= time_tag article.created_at %>
+  </p>
+
+  <p>
+    <strong><%= pluralize article.comments.count, "comment" %></strong>
+  </p>
+
+  <p>
+    <strong>Content:</strong>
+    <%= article.content %>
   </p>
 
   <p>

app/views/articles/_comments.html.erb

@@ -0,0 +1,7 @@
+<h2>Comments</h2>
+
+<div id="comments">
+  <%= render article.comments %>
+</div>
+
+<%= render "comments/new", article: article %>

app/views/articles/show.html.erb

@@ -3,6 +3,7 @@
 <p id="notice"><%= notice %></p>
 
 <%= render @article %>
+<%= render "articles/comments", article: @article %>
 
 <div>
   <%= link_to "Edit this article", edit_article_path(@article) %> |

app/views/comments/_comment.html.erb

@@ -0,0 +1,4 @@
+<div id="<%= dom_id comment %>">
+  <%= comment.content %>
+  - <%= time_tag comment.created_at %>
+</div>

app/views/comments/_new.html.erb

@@ -0,0 +1,5 @@
+<%= form_with model: [ article, Comment.new ] do |form| %>
+  Your comment:<br>
+  <%= form.text_area :content, size: "20x5" %>
+  <%= form.submit %>
+<% end %>