Final exam

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/

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/

app/controllers/api_v1/messages_controller.rb

@@ -0,0 +1,7 @@
+class ApiV1::MessagesController < ApplicationController
+
+  def index
+    @messages = Message.all
+  end
+
+end

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

app/controllers/messages_controller.rb

@@ -4,18 +4,18 @@ 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, :user).order("id DESC").page( params[:page] )
 
     if params[:status] == "pending"
-      # TODO: @messages = @messages.pending
-      @messages = @messages.where( :status => "pending" )
+      @messages = @messages.pending
+      # @messages = @messages.where( :status => "pending" )
     elsif params[:status] == "completed"
-      # TODO: @messages = @messages.completed
-      @messages = @messages.where( :status => "completed" )
+      @messages = @messages.completed
+      # @messages = @messages.where( :status => "completed" )
     end
 
     if params[:days]
-      # TODO: @messages = @messages.within_days(params[:days].to_i)
+      # @messages = @messages.within_days(params[:days].to_i)
       @messages = @messages.where( ["created_at >= ?", Time.now - params[:days].to_i.days ] )
     end
   end
@@ -57,6 +57,7 @@ def destroy
     @message.destroy
 
     redirect_to root_path
+
   end
 
   protected

app/helpers/api_v1/messages_helper.rb

@@ -0,0 +1,2 @@
+module ApiV1::MessagesHelper
+end

app/models/like.rb

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

app/models/message.rb

@@ -4,6 +4,16 @@ class Message < ActiveRecord::Base
 
   has_many :comments, :dependent => :destroy
 
+  has_many :likes, :dependent => :destroy
+  has_many :likes_by, :through => :likes, :source => :user, :dependent => :destroy
+
+  has_many :subscriptions, :dependent => :destroy
+  has_many :subscriptions_by, :through => :likes, :source => :user, :dependent => :destroy
+
+  scope :pending, -> {where( :status => "pending" )}
+  scope :completed, -> {where( :status => "completed" )}
+  scope :within_days , ->(time) { where "created_at >= ?", Time.now - time.to_i.days }
+
   def last_comment_summary
     self.comments.last.try(:content).try(:truncate, 20)
   end

app/models/subscription.rb

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

app/models/user.rb

@@ -7,12 +7,19 @@ class User < ActiveRecord::Base
   has_many :messages
   has_many :comments
 
+  has_many :likes, :dependent => :destroy
+  has_many :like_messages, :through => :likes, :source => :message, :dependent => :destroy
+
+  has_many :subscriptions, :dependent => :destroy
+  has_many :subscriptions_by, :through => :likes, :source => :message, :dependent => :destroy
+
   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

app/views/api_v1/messages/index.json.jbuilder

@@ -0,0 +1,10 @@
+json.data do
+   json.array!(@message) do |message|
+     json.id message.id
+     json.status message.status
+     json.category_name message.category_name
+     json.title message.title
+     json.content message.content
+     json.created_at message.created_at
+   end
+ end

app/views/messages/destroy.js.erb

@@ -0,0 +1 @@
+$("#delete-block %>").remove();

app/views/messages/show.html.erb

@@ -2,6 +2,15 @@
 
 <%= simple_format @message.content %>
 
+<h4>Likes</h4>
+  <% @message.likes_by.each do |user| %>
+    <p><%= user.email.split("@").first%></p>
+  <% end %>
+  <h4>Subscribed</h4>
+  <% @message.subscriptions_by.each do |user| %>
+    <p><%= user.email.split("@").first%></p>
+  <% end %>
+
 <h2>Comments list</h2>
 
 <%= form_for [@message, @comment] do |f| %>
@@ -19,13 +28,14 @@
 
 <% @message.comments.each do |comment| %>
 
-  <p><%= simple_format comment.content %> at <%= comment.created_at.to_s(:short) %> by <%= comment.user.display_name %>
+    <p><%= simple_format comment.content %> at <%= comment.created_at.to_s(:short) %> by <%= comment.user.display_name %>
 
-    <% if comment.user == current_user %>
+      <% 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>
-
+        <span id ="delete-block %>">
+          <%= link_to "Delete", message_comment_path(@message, comment), :method => :delete, :remote => true %>
+        </span>
+      <% end %>
+    </p>
 <% end %>
 

config/routes.rb

@@ -1,10 +1,26 @@
 Rails.application.routes.draw do
   devise_for :users
 
+
+
   resources :messages do
     resources :comments
+
+    member do
+      post :like
+      post :dislike
+      post :subscribe
+      post :unsubscribe
+    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/migrate/20160722090200_create_subscriptions.rb

@@ -0,0 +1,11 @@
+class CreateSubscriptions < ActiveRecord::Migration
+  def change
+    create_table :subscriptions do |t|
+
+      t.integer :user_id, :index=> true
+      t.integer :message_id, :index => true
+
+      t.timestamps null: false
+    end
+  end
+end

db/migrate/20160722090224_create_likes.rb

@@ -0,0 +1,9 @@
+class CreateLikes < ActiveRecord::Migration
+  def change
+    create_table :likes do |t|
+      t.integer :user_id, :index=> true
+      t.integer :message_id, :index => true
+      t.timestamps null: false
+    end
+  end
+end

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: 20160722090224) 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 "subscriptions", 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 "subscriptions", ["message_id"], name: "index_subscriptions_on_message_id"
+  add_index "subscriptions", ["user_id"], name: "index_subscriptions_on_user_id"
+
   create_table "users", force: :cascade do |t|
     t.string   "email",                  default: "", null: false
     t.string   "encrypted_password",     default: "", null: false

lib/tasks/dev.rake

@@ -17,6 +17,12 @@ namespace :dev do
                            :content => Faker::Lorem.paragraph,
                            :user => users.sample,
                            :created_at => Time.now - rand(30).days )
+      users.sample(2).each do |u|
+        Subscription.create!(:user => u, :message => m)
+      end
+      users.sample(2).each do |u|
+        Like.create!(:user => u, :message => m)
+      end
       5.times do
         m.comments.create!( :content => Faker::Lorem.paragraph,
                             :user => users.sample )

spec/controllers/api_v1/messages_controller_spec.rb

@@ -0,0 +1,5 @@
+require 'rails_helper'
+
+RSpec.describe ApiV1::MessagesController, type: :controller do
+
+end

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

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

spec/models/subscription_spec.rb

@@ -0,0 +1,5 @@
+require 'rails_helper'
+
+RSpec.describe Subscription, type: :model do
+  pending "add some examples to (or delete) #{__FILE__}"
+end

spec/models/user_spec.rb

@@ -25,11 +25,23 @@
   describe "#words_count" do
     before do
       # TODO: 加 Message 和 Comment 測試資料
+      @other_user = User.create!(:email => "ooxx@example.org", :password => "12345678")
+
+      m1 =Message.create!(:user => @user,
+        :title => Faker::Lorem.words(5),
+        :content => Faker::Lorem.words(5))
+      Comment.create!(:user => @other_user,
+        :content => Faker::Lorem.words(20),
+        :message_id => m1)
+      Comment.create!(:user => @user,
+        :content => Faker::Lorem.words(5),
+        :message_id => m1)
     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(15)
+      expect(@other_user.words_count).to eq(20)
     end
   end