Final exam by Hankho

app/controllers/api_v1/messages_controller.rb

@@ -0,0 +1,7 @@
+class ApiV1::MessagesController < ApplicationController
+	def index
+		@messages = Message.all
+		render :json => @messages.order("id DESC").to_json(only: [:id, :status, :category_name, :title, :content, :created_at])
+
+	end
+end

app/controllers/comments_controller.rb

@@ -16,7 +16,9 @@ def destroy
     @comment = current_user.comments.find( params[:id] )
     @comment.destroy
 
-    redirect_to :back
+    respond_to do |format|
+      format.js
+    end
   end
 
   protected

app/controllers/messages_controller.rb

@@ -1,22 +1,22 @@
 class MessagesController < ApplicationController
 
   before_action :authenticate_user!, :except => [:index, :show]
-
+  before_action :set_message, :only => :like
   def index
     # TODO: fix N+1 queries for user and comments
-    @messages = Message.order("id DESC").page( params[:page] )
-
+    @messages = Message.includes(:user, :comments).order("id DESC").page( params[:page] )
+    
     if params[:status] == "pending"
       # TODO: @messages = @messages.pending
-      @messages = @messages.where( :status => "pending" )
+      @messages = @messages.pending
     elsif params[:status] == "completed"
       # TODO: @messages = @messages.completed
-      @messages = @messages.where( :status => "completed" )
+      @messages = @messages.completed
     end
 
     if params[:days]
       # TODO: @messages = @messages.within_days(params[:days].to_i)
-      @messages = @messages.where( ["created_at >= ?", Time.now - params[:days].to_i.days ] )
+      @messages = @messages.within_days(params[:days].to_i)
     end
   end
 
@@ -58,11 +58,25 @@ def destroy
 
     redirect_to root_path
   end
+  def like
+      if current_user.liked_message?(@message)
+        current_user.liked_messages.delete(@message)
+      else
+        current_user.liked_messages << @message
+      end
+      respond_to do |format|
+        format.html {redirect_to message_path(@message)}
+        format.js
+      end
+  end
 
   protected
 
   def message_params
     params.require(:message).permit(:title, :content, :category_name)
   end
+  def set_message
+    @message = Message.find( params[:id] )
+  end
 
 end

app/models/like.rb

@@ -0,0 +1,4 @@
+class Like < ActiveRecord::Base
+	belongs_to :user
+	belongs_to :message
+end

app/models/message.rb

@@ -3,9 +3,17 @@ class Message < ActiveRecord::Base
   belongs_to :user
 
   has_many :comments, :dependent => :destroy
+  has_many :likes, :dependent => :destroy
+  has_many :likes_users, :through => :likes, :source => :user
+  has_many :subscribes, :dependent => :destroy
+  has_many :subscribes_users, :through => :subscribes, :source => :user
 
   def last_comment_summary
     self.comments.last.try(:content).try(:truncate, 20)
   end
 
+ scope :pending, -> {where( :status => "pending" )}
+ scope :completed, -> {where( :status => "completed" )}	 	
+ scope :within_days, -> {where( ["created_at >= ?", Time.now - params[:days].to_i.days ] )}
+
 end

app/models/subscribe.rb

@@ -0,0 +1,4 @@
+class Subscribe < ActiveRecord::Base
+	belongs_to :user
+	belongs_to :message
+end

app/models/user.rb

@@ -6,13 +6,21 @@ class User < ActiveRecord::Base
 
   has_many :messages
   has_many :comments
-
+  has_many :likes, :dependent => :destroy
+  has_many :liked_messages, :through => :likes, :source => :message
+  has_many :subscribes, :dependent => :destroy
+  has_many :subscribed_messages, :through => :subscribes, :source => :message
+
   def display_name
-    self.email.split("@").first
+    self.email.split("@").firstpe
+  end
+  def liked_message?(message)   # "?"是希望得到true/false
+    self.liked_messages.include?(message)
   end
 
   def posts_count
     # TODO: 請完成我
+    self.messages.count + self.comments.count
   end
 
   def words_count
@@ -28,5 +36,4 @@ def words_count
 
     return count
   end
-
 end

app/views/comments/destroy.js.erb

@@ -0,0 +1 @@
+$('#c-<%= @comment.id %>').remove();

app/views/messages/_like.html.erb

@@ -0,0 +1,5 @@
+<%if current_user.liked_message?(@message)%>
+<%= button_to "Unlike", like_message_path(@message), :remote => true %>
+<%else%>
+<%= button_to "Like", like_message_path(@message), :remote => true %>
+<%end%>

app/views/messages/like.js.erb

@@ -0,0 +1,5 @@
+<% if current_user.liked_message?(@message)%>
+$("#like input[type=submit]").val("Unlike");
+<%else%>
+$("#like input[type=submit]").val("Like");
+<%end%>

app/views/messages/show.html.erb

@@ -14,18 +14,40 @@
   <p>
     <%= f.submit %>
   </p>
+
 
 <% end %>
+  <div id="like">
+    <%= render :partial => "like"%>
+  </div>
+
+  <% @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, :remote => true, :data => { :confirm => "Are u sure?"} %>
+      <% end %>
+    </p>
+  </div>
+
+<% end %>
+
+
+
+
+
+
+
+
+
+
+
+
+
 
-<% @message.comments.each do |comment| %>
 
-  <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?"} %>
-    <% end %>
-  </p>
 
-<% end %>
 

config/routes.rb

@@ -3,8 +3,19 @@
 
   resources :messages do
     resources :comments
+    member do
+      post :like
+    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.
   # See how all your routes lay out with "rake routes".
 

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: 20161009042845) do
 
   create_table "comments", force: :cascade do |t|
     t.text     "content"
@@ -23,6 +23,16 @@
 
   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
+
+  add_index "likes", ["message_id"], name: "index_likes_on_message_id"
+  add_index "likes", ["user_id"], name: "index_likes_on_user_id"
+
   create_table "messages", force: :cascade do |t|
     t.string   "title"
     t.text     "content"
@@ -36,6 +46,16 @@
   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.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+    t.integer  "user_id"
+    t.integer  "message_id"
+  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

spec/models/user_spec.rb

@@ -25,11 +25,13 @@
   describe "#words_count" do
     before do
       # TODO: 加 Message 和 Comment 測試資料
+      m = Message.create!(user: @user, title: "global disaster", content: "cause many damage")
+      Comment.create!(user: @user, content: "typhoon is terrible", message: m)
     end
 
     it "加總該使用者的所有 Mesasge 和 Comment 的總字數" do
       # TODO: 測試 words_count 方法
-
+      expect(@user.words_count).to eq(8)
     end
   end