Add comments to topics

app/controllers/topics_controller.rb

@@ -1,8 +1,10 @@
 class TopicsController < ApplicationController
-  # include CommentableActions
+  include CommentableActions
 
   before_action :set_community
 
+  has_orders %w{most_voted newest oldest}, only: :show
+
   skip_authorization_check
 
   def new
@@ -21,6 +23,9 @@ class TopicsController < ApplicationController
 
   def show
     @topic = Topic.find(params[:id])
+    @commentable = @topic
+    @comment_tree = CommentTree.new(@commentable, params[:page], @current_order)
+    set_comment_flags(@comment_tree.comments)
   end
 
   def edit

app/models/comment.rb

@@ -3,7 +3,7 @@ class Comment < ActiveRecord::Base
   include HasPublicAuthor
   include Graphqlable
 
-  COMMENTABLE_TYPES = %w(Debate Proposal Budget::Investment Poll::Question Legislation::Question Legislation::Annotation).freeze
+  COMMENTABLE_TYPES = %w(Debate Proposal Budget::Investment Poll::Question Legislation::Question Legislation::Annotation Topic).freeze
 
   acts_as_paranoid column: :hidden_at
   include ActsAsParanoidAliases

app/models/topic.rb

@@ -1,4 +1,9 @@
 class Topic < ActiveRecord::Base
+  acts_as_paranoid column: :hidden_at
+  include ActsAsParanoidAliases
+
   belongs_to :community
   belongs_to :author, -> { with_hidden }, class_name: 'User', foreign_key: 'author_id'
+
+  has_many :comments, as: :commentable
 end

app/views/topics/_comments.html.erb

@@ -0,0 +1,24 @@
+<% cache [locale_and_user_status, @current_order, commentable_cache_key(@topic), @comment_tree.comments, @comment_tree.comment_authors, @topic.comments_count, @comment_flags] do %>
+  <div class="row comments">
+    <div id="comments" class="small-12 column">
+      <%= render 'shared/wide_order_selector', i18n_namespace: "comments" %>
+
+      <% if user_signed_in? %>
+        <%= render 'comments/form', {commentable: @topic, parent_id: nil, toggeable: false} %>
+      <% else %>
+      <br>
+
+      <div data-alert class="callout primary">
+        <%= t("topics.show.login_to_comment",
+            signin: link_to(t("votes.signin"), new_user_session_path),
+            signup: link_to(t("votes.signup"), new_user_registration_path)).html_safe %>
+        </div>
+      <% end %>
+
+      <% @comment_tree.root_comments.each do |comment| %>
+        <%= render 'comments/comment', comment: comment  %>
+      <% end %>
+      <%= paginate @comment_tree.root_comments %>
+    </div>
+  </div>
+<% end %>

app/views/topics/_topics.html.erb

@@ -6,10 +6,12 @@
   <% topics.each do |topic| %>
     <div id="<%= dom_id(topic) %>">
       <%= link_to topic.title, community_topic_path(@community, topic) %>
-      <br>
+      <p class="topic-info">
+        <%= link_to t("proposals.proposal.comments", count: topic.comments_count), community_topic_path(@community, topic, anchor: "comments") %>
         <%= topic.author.name %>
-      <br>
         <%= I18n.l topic.created_at %>
+      </p>
+
       <% if topic.author == current_user %>
         <%= link_to t("topic.edit"), edit_community_topic_path(@community.id, topic), class: 'button expanded' %>
       <% end %>

app/views/topics/show.html.erb

@@ -3,3 +3,12 @@
 Comunidad: <%= @community.proposal.title %>
 <br>
 <%= @topic.title %>
+
+<div class="tabs-content" data-tabs-content="proposals-tabs" role="tablist">
+  <%#= render "proposals/filter_subnav" %>
+  <%#= render "proposals/notifications" %>
+
+  <div class="tabs-panel is-active" id="tab-comments">
+    <%= render "topics/comments" %>
+  </div>
+</div>

db/migrate/20170807082243_create_topics.rb

@@ -3,7 +3,9 @@ class CreateTopics < ActiveRecord::Migration
     create_table :topics do |t|
       t.string :title, null: false
       t.integer :author_id
+      t.integer  "comments_count", default: 0
       t.references :community, index: true
+      t.datetime :hidden_at, index: true
       t.timestamps null: false
     end
   end

db/schema.rb

@@ -893,12 +893,15 @@ ActiveRecord::Schema.define(version: 20170807082243) do
   create_table "topics", force: :cascade do |t|
     t.string   "title",                      null: false
     t.integer  "author_id"
+    t.integer  "comments_count", default: 0
     t.integer  "community_id"
+    t.datetime "hidden_at"
     t.datetime "created_at",                 null: false
     t.datetime "updated_at",                 null: false
   end
 
   add_index "topics", ["community_id"], name: "index_topics_on_community_id", using: :btree
+  add_index "topics", ["hidden_at"], name: "index_topics_on_hidden_at", using: :btree
 
   create_table "users", force: :cascade do |t|
     t.string   "email",                                     default: ""