Peter's Final Exam

.rbenv-gemsets

@@ -0,0 +1 @@
+rails_pratice

app/controllers/api_v1/messages_controller.rb

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

app/controllers/comments_controller.rb

@@ -15,8 +15,9 @@ def create
   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

@@ -4,19 +4,19 @@ 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
     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
 

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
+  has_many :like_users, :through => :likes, :source => :user
+
+  has_many :subscriptions
+  has_many :subscript_users, :through => :subscriptions, :source => :user
+
+  scope :pending, -> { where( :status => "pending" ) }
+  scope :completed, -> { where( :status => "completed" ) }
+  scope :within_days, ->(date) { where( ["created_at >= ?", Time.now - date.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
+  has_many :like_messages, :through => :likes, :source => :messages
+
+  has_many :subscriptions
+  has_many :subscript_messages, :through => :subscription, :source => :messages
+
   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 +1,5 @@
+json.data do
+	json.messages @messages do |message|
+		json.(message, :id, :status, :category_name, :title, :content, :created_at)
+	end
+end

app/views/comments/destroy.js.erb

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

app/views/messages/show.html.erb

@@ -1,3 +1,14 @@
+like_users:
+<% @message.like_users.each do |user| %>
+  <li><%= user.email %></li>
+<% end %>
+
+subscript_users:
+<% @message.subscript_users.each do |user| %>
+  <li><%= user.email %></li>
+<% end %>
+
+
 <h2><%= @message.title %></h2>
 
 <%= simple_format @message.content %>
@@ -19,13 +30,15 @@
 
 <% @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>
+  <div id="comment_<%= 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), :remote => true, :method => :delete, :data => { :confirm => "Are u sure?"} %>
+      <% end %>
+    </p>
+  </div>
 
 <% end %>
 

config/routes.rb

@@ -5,6 +5,9 @@
     resources :comments
   end
 
+  scope :path => '/api/v1/', :module => "api_v1", :as => 'v1', :defaults => { :format => :json } do
+    resources :messages, only: [ :index ]
+  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/20161111165335_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 :likes, :user_id
+    add_index :likes, :message_id
+  end
+end

db/migrate/20161111165512_create_subscriptions.rb

@@ -0,0 +1,12 @@
+class CreateSubscriptions < ActiveRecord::Migration
+  def change
+    create_table :subscriptions do |t|
+      t.integer :user_id
+      t.integer :message_id
+
+      t.timestamps null: false
+    end
+    add_index :subscriptions, :user_id
+    add_index :subscriptions, :message_id
+  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: 20161111165512) 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

@@ -1,11 +1,15 @@
 namespace :dev do
 
+  task :build => ["tmp:clear", "log:clear", "db:drop", "db:create", "db:migrate"]
+  task :rebuild => ["dev:build" , :fake]
   task :fake => :environment do
     User.delete_all
     Message.delete_all
     Comment.delete_all
 
     users = []
+    users << User.create!( :email => "[email protected]",
+                             :password => "12345678")
     10.times do
       users << User.create!( :email => Faker::Internet.email,
                              :password => "12345678")
@@ -14,9 +18,15 @@ namespace :dev do
     20.times do
       m = Message.create!( :title => Faker::Lorem.word,
                            :status => ["pending", "completed"].sample,
+                           :category_name => ["快報", "求物資", "求救"].sample,
                            :content => Faker::Lorem.paragraph,
                            :user => users.sample,
                            :created_at => Time.now - rand(30).days )
+      2.times do
+        m.likes.create!( :user => users.sample )
+        m.subscriptions.create!( :user => users.sample )
+      end
+      puts m.title
       5.times do
         m.comments.create!( :content => Faker::Lorem.paragraph,
                             :user => users.sample )

spec/models/user_spec.rb

@@ -25,11 +25,13 @@
   describe "#words_count" do
     before do
       # TODO: 加 Message 和 Comment 測試資料
+      @message = @user.messages.create!(title: "12345", content: "67890")
+      @message.comments.create!(content: "12345", user: @user)
     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(3)
     end
   end