diff --git a/app/assets/javascripts/api_v1/messages.coffee b/app/assets/javascripts/api_v1/messages.coffee
new file mode 100644
index 0000000..24f83d1
--- /dev/null
+++ b/app/assets/javascripts/api_v1/messages.coffee
@@ -0,0 +1,3 @@
+# Place all the behaviors and hooks related to the matching controller here.
+# All this logic will automatically be available in application.js.
+# You can use CoffeeScript in this file: http://coffeescript.org/
diff --git a/app/assets/stylesheets/api_v1/messages.scss b/app/assets/stylesheets/api_v1/messages.scss
new file mode 100644
index 0000000..db6f927
--- /dev/null
+++ b/app/assets/stylesheets/api_v1/messages.scss
@@ -0,0 +1,3 @@
+// Place all the styles related to the api_v1::messages controller here.
+// They will automatically be included in application.css.
+// You can use Sass (SCSS) here: http://sass-lang.com/
diff --git a/app/controllers/api_controller.rb b/app/controllers/api_controller.rb
new file mode 100644
index 0000000..75bb517
--- /dev/null
+++ b/app/controllers/api_controller.rb
@@ -0,0 +1,2 @@
+class ApiController < ActionController::Base
+end
\ No newline at end of file
diff --git a/app/controllers/api_v1/messages_controller.rb b/app/controllers/api_v1/messages_controller.rb
new file mode 100644
index 0000000..5bdcdcd
--- /dev/null
+++ b/app/controllers/api_v1/messages_controller.rb
@@ -0,0 +1,11 @@
+class ApiV1::MessagesController < ApiController
+	def index
+		@messages = Message.all
+		render :json => @messages.to_json
+	end
+
+	def show
+		@message = Message.find(params[:id])
+		render :json => @message.to_json		
+	end
+end
diff --git a/app/controllers/comments_controller.rb b/app/controllers/comments_controller.rb
index e9d6aaa..e03036d 100644
--- a/app/controllers/comments_controller.rb
+++ b/app/controllers/comments_controller.rb
@@ -16,7 +16,10 @@ def destroy
     @comment = current_user.comments.find( params[:id] )
     @comment.destroy
 
-    redirect_to :back
+    respond_to do |format|
+      #format.html { redirect_to :back }
+      format.js
+    end 
   end
 
   protected
diff --git a/app/controllers/messages_controller.rb b/app/controllers/messages_controller.rb
index 96f65e5..2ef59c6 100644
--- a/app/controllers/messages_controller.rb
+++ b/app/controllers/messages_controller.rb
@@ -4,14 +4,16 @@ class MessagesController < ApplicationController
 
   def index
     # TODO: fix N+1 queries for user and comments
-    @messages = Message.order("id DESC").page( params[:page] )
+    @messages = Message.includes(:comments).order("id DESC").page( params[:page] )
 
     if params[:status] == "pending"
       # TODO: @messages = @messages.pending
-      @messages = @messages.where( :status => "pending" )
+      #@messages = @messages.where( :status => "pending" )
+      @messages = @messages.pending
     elsif params[:status] == "completed"
       # TODO: @messages = @messages.completed
-      @messages = @messages.where( :status => "completed" )
+      #@messages = @messages.where( :status => "completed" )
+      @messages = @messages.completed
     end
 
     if params[:days]
@@ -22,6 +24,11 @@ def index
 
   def show
     @message = Message.find( params[:id] )
+
+    #Message.last.likes.first.user.email
+    @who_like_message = @message.likes
+    @who_subscribe_message = @message.subscribes
+    
     @comment = Comment.new
   end
 
@@ -59,6 +66,29 @@ def destroy
     redirect_to root_path
   end
 
+  def like
+    @message = Message.find(params[:id])
+    if current_user.like_message?(@message)
+        current_user.like_messages.delete(@message)
+    else
+        current_user.like_messages << @message
+    end
+
+    redirect_to message_path(@message)
+  end
+
+  def subscribe
+    @message = Message.find(params[:id])
+    if current_user.subscribe_message?(@message)
+        current_user.subscribe_messages.delete(@message)
+    else
+        current_user.subscribe_messages << @message
+    end
+
+    redirect_to message_path(@message)
+  end
+
+
   protected
 
   def message_params
diff --git a/app/helpers/api_v1/messages_helper.rb b/app/helpers/api_v1/messages_helper.rb
new file mode 100644
index 0000000..21af019
--- /dev/null
+++ b/app/helpers/api_v1/messages_helper.rb
@@ -0,0 +1,2 @@
+module ApiV1::MessagesHelper
+end
diff --git a/app/models/like.rb b/app/models/like.rb
new file mode 100644
index 0000000..5519adf
--- /dev/null
+++ b/app/models/like.rb
@@ -0,0 +1,4 @@
+class Like < ActiveRecord::Base
+	belongs_to :user
+	belongs_to :message	
+end
diff --git a/app/models/message.rb b/app/models/message.rb
index e24a8b2..bb8dba7 100644
--- a/app/models/message.rb
+++ b/app/models/message.rb
@@ -4,6 +4,18 @@ class Message < ActiveRecord::Base
 
   has_many :comments, :dependent => :destroy
 
+  has_many :likes
+
+  has_many :subscribes
+
+  scope :pending, -> {where(:status => :pending)}
+
+  scope :completed, -> {where(:status => :completed)}
+
+  scope :within_days, -> {where(':status => :created_at?', Time.now - params[:days].to_i.days)}
+
+  #scope :who_like_it, -> {where(:status => :completed)}
+
   def last_comment_summary
     self.comments.last.try(:content).try(:truncate, 20)
   end
diff --git a/app/models/subscribe.rb b/app/models/subscribe.rb
new file mode 100644
index 0000000..63706d8
--- /dev/null
+++ b/app/models/subscribe.rb
@@ -0,0 +1,4 @@
+class Subscribe < ActiveRecord::Base
+	belongs_to :user
+	belongs_to :message
+end
diff --git a/app/models/user.rb b/app/models/user.rb
index 6d01aa9..73912e7 100644
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -7,12 +7,27 @@ class User < ActiveRecord::Base
   has_many :messages
   has_many :comments
 
+  has_many :likes
+  has_many :like_messages, :through => :likes, :source => :message
+
+  has_many :subscribes
+  has_many :subscribe_messages, :through => :subscribes, :source => :message
+
+  def like_message?(message)
+    self.like_messages.include?(message)
+  end
+
+  def subscribe_message?(message)
+    self.subscribe_messages.include?(message)
+  end
+
   def display_name
     self.email.split("@").first
   end
 
   def posts_count
     # TODO: 請完成我
+    self.messages.size+self.comments.size
   end
 
   def words_count
diff --git a/app/views/comments/destroy.js.erb b/app/views/comments/destroy.js.erb
new file mode 100644
index 0000000..840e620
--- /dev/null
+++ b/app/views/comments/destroy.js.erb
@@ -0,0 +1 @@
+$('#c-<%= @comment.id%>').remove(); 
\ No newline at end of file
diff --git a/app/views/messages/show.html.erb b/app/views/messages/show.html.erb
index 41401f6..68ddc4f 100644
--- a/app/views/messages/show.html.erb
+++ b/app/views/messages/show.html.erb
@@ -1,9 +1,42 @@
 <h2><%= @message.title %></h2>
 
+<div class ="like">
+    <% if current_user.like_message?(@message) %>
+      <%= button_to "Unlike", like_message_path(@message) %>
+    <% else %>
+      <%= button_to "like", like_message_path(@message) %>
+    <% end %>
+</div>
+
+<div class ="subscribe">
+    <% if current_user.subscribe_message?(@message) %>
+      <%= button_to "Unsubscribe", subscribe_message_path(@message) %>
+    <% else %>
+      <%= button_to "subscribe", subscribe_message_path(@message) %>
+    <% end %>
+</div>
+
+
+<h2>Likes list</h2>
+<% @who_like_message.each do |message| %>
+  <%= message.user.email%> |
+<% end %>
+
+<h2>Subscribes list</h2>
+
+<% @who_subscribe_message.each do |message| %>
+  <% if message.user %>
+    <%= message.user.email%> |
+  <% else %>
+    Why not be the first to subscribe this
+  <% end %>
+<% end %>
+
+<hr/>
+
 <%= simple_format @message.content %>
 
 <h2>Comments list</h2>
-
 <%= form_for [@message, @comment] do |f| %>
 
   <p>
@@ -18,14 +51,14 @@
 <% end %>
 
 <% @message.comments.each do |comment| %>
-
+<div id="c-<%= comment.id %>">
   <p><%= simple_format comment.content %> at <%= comment.created_at.to_s(:short) %> by <%= comment.user.display_name %>
 
     <% if comment.user == current_user %>
       <%# TODO: 修改成 AJAX 版本的刪除 %>
-      <%= link_to "Delete", message_comment_path(@message, comment), :method => :delete, :data => { :confirm => "Are u sure?"} %>
+      <%= link_to "Delete", message_comment_path(@message, comment), :method => :delete,:remote => true, :data => { :confirm => "Are u sure?"} %>
     <% end %>
   </p>
-
+</div>
 <% end %>
 
diff --git a/config/routes.rb b/config/routes.rb
index 74d4dbf..36ecfcf 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -3,6 +3,16 @@
 
   resources :messages do
     resources :comments
+
+    member do
+     post :like
+     post :subscribe
+   end
+
+  end
+
+  scope :path => '/api/v1/', :module => "api_v1", :as => 'v1', :defaults => { :format => :json } do
+    resources :messages
   end
 
   # The priority is based upon order of creation: first created -> highest priority.
diff --git a/db/migrate/20161008040352_create_likes.rb b/db/migrate/20161008040352_create_likes.rb
new file mode 100644
index 0000000..718b22e
--- /dev/null
+++ b/db/migrate/20161008040352_create_likes.rb
@@ -0,0 +1,12 @@
+class CreateLikes < ActiveRecord::Migration
+  def change
+    create_table :likes do |t|
+    	t.integer :user_id
+    	t.integer :message_id
+
+      t.timestamps null: false
+    end
+    	#add_index :messages, :user_id
+    	#add_index :messages, :message_id
+  end
+end
diff --git a/db/migrate/20161008052951_create_subscribes.rb b/db/migrate/20161008052951_create_subscribes.rb
new file mode 100644
index 0000000..887e746
--- /dev/null
+++ b/db/migrate/20161008052951_create_subscribes.rb
@@ -0,0 +1,13 @@
+class CreateSubscribes < ActiveRecord::Migration
+  def change
+    create_table :subscribes do |t|
+      t.integer :user_id
+      t.integer :message_id
+
+      t.timestamps null: false
+    end
+
+    add_index :subscribes, :message_id
+    add_index :subscribes, :user_id
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index ef7b5c0..93e04bb 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -11,7 +11,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20150728165437) do
+ActiveRecord::Schema.define(version: 20161008052951) do
 
   create_table "comments", force: :cascade do |t|
     t.text     "content"
@@ -23,6 +23,13 @@
 
   add_index "comments", ["message_id"], name: "index_comments_on_message_id"
 
+  create_table "likes", force: :cascade do |t|
+    t.integer  "user_id"
+    t.integer  "message_id"
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+  end
+
   create_table "messages", force: :cascade do |t|
     t.string   "title"
     t.text     "content"
@@ -36,6 +43,16 @@
   add_index "messages", ["status"], name: "index_messages_on_status"
   add_index "messages", ["user_id"], name: "index_messages_on_user_id"
 
+  create_table "subscribes", force: :cascade do |t|
+    t.integer  "user_id"
+    t.integer  "message_id"
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+  end
+
+  add_index "subscribes", ["message_id"], name: "index_subscribes_on_message_id"
+  add_index "subscribes", ["user_id"], name: "index_subscribes_on_user_id"
+
   create_table "users", force: :cascade do |t|
     t.string   "email",                  default: "", null: false
     t.string   "encrypted_password",     default: "", null: false
diff --git a/lib/tasks/dev.rake b/lib/tasks/dev.rake
index 4673e72..a38d179 100644
--- a/lib/tasks/dev.rake
+++ b/lib/tasks/dev.rake
@@ -5,6 +5,10 @@ namespace :dev do
     Message.delete_all
     Comment.delete_all
 
+    #Assignment
+    Like.delete_all
+    Subscribe.delete_all
+
     users = []
     10.times do
       users << User.create!( :email => Faker::Internet.email,
@@ -20,7 +24,14 @@ namespace :dev do
       5.times do
         m.comments.create!( :content => Faker::Lorem.paragraph,
                             :user => users.sample )
+
       end
+
+      2.times do
+          m.likes.create!( :user => users.sample )
+                              
+          m.subscribes.create!( :user => users.sample )
+      end 
     end
   end
 
diff --git a/spec/controllers/api_v1/messages_controller_spec.rb b/spec/controllers/api_v1/messages_controller_spec.rb
new file mode 100644
index 0000000..e1f1525
--- /dev/null
+++ b/spec/controllers/api_v1/messages_controller_spec.rb
@@ -0,0 +1,5 @@
+require 'rails_helper'
+
+RSpec.describe ApiV1::MessagesController, type: :controller do
+
+end
diff --git a/spec/helpers/api_v1/messages_helper_spec.rb b/spec/helpers/api_v1/messages_helper_spec.rb
new file mode 100644
index 0000000..e078b0d
--- /dev/null
+++ b/spec/helpers/api_v1/messages_helper_spec.rb
@@ -0,0 +1,15 @@
+require 'rails_helper'
+
+# Specs in this file have access to a helper object that includes
+# the ApiV1::MessagesHelper. For example:
+#
+# describe ApiV1::MessagesHelper do
+#   describe "string concat" do
+#     it "concats two strings with spaces" do
+#       expect(helper.concat_strings("this","that")).to eq("this that")
+#     end
+#   end
+# end
+RSpec.describe ApiV1::MessagesHelper, type: :helper do
+  pending "add some examples to (or delete) #{__FILE__}"
+end
diff --git a/spec/models/like_spec.rb b/spec/models/like_spec.rb
new file mode 100644
index 0000000..76ea93d
--- /dev/null
+++ b/spec/models/like_spec.rb
@@ -0,0 +1,5 @@
+require 'rails_helper'
+
+RSpec.describe Like, type: :model do
+  pending "add some examples to (or delete) #{__FILE__}"
+end
diff --git a/spec/models/subscribe_spec.rb b/spec/models/subscribe_spec.rb
new file mode 100644
index 0000000..545a45d
--- /dev/null
+++ b/spec/models/subscribe_spec.rb
@@ -0,0 +1,5 @@
+require 'rails_helper'
+
+RSpec.describe Subscribe, type: :model do
+  pending "add some examples to (or delete) #{__FILE__}"
+end
diff --git a/spec/models/user_spec.rb b/spec/models/user_spec.rb
index 528cc38..abcb8a4 100644
--- a/spec/models/user_spec.rb
+++ b/spec/models/user_spec.rb
@@ -25,6 +25,7 @@
   describe "#words_count" do
     before do
       # TODO: 加 Message 和 Comment 測試資料
+      
     end
 
     it "加總該使用者的所有 Mesasge 和 Comment 的總字數" do