课程发布通知消息提示

app/models/course.rb

@@ -37,6 +37,7 @@ class Course < ActiveRecord::Base
   has_many :course_acts, :class_name => 'CourseActivity',:as =>:course_act ,:dependent => :destroy
 
   has_many :course_activities
+  has_many :course_messages
 
   acts_as_taggable
   acts_as_nested_set :order => 'name', :dependent => :destroy

app/models/course_message.rb

@@ -0,0 +1,12 @@
+class CourseMessage < ActiveRecord::Base
+  attr_accessible :course_id, :course_message_id, :course_message_type, :user_id, :viewed
+
+  # 多态 虚拟关联
+  belongs_to :course_message ,:polymorphic => true
+  belongs_to :course
+  belongs_to :user
+  validates :user_id,presence: true
+  validates :course_id,presence: true
+  validates :course_message_id,presence: true
+  validates :course_message_type, presence: true
+end

app/models/news.rb

@@ -31,6 +31,9 @@ class News < ActiveRecord::Base
   # 课程动态
   has_many :course_acts, :class_name => 'CourseActivity',:as =>:course_act ,:dependent => :destroy
   # end
+  # 课程消息
+  has_many :course_messages, :class_name =>'CourseMessage', :as => :course_message, :dependent => :destroy
+  #end
 
   has_many :ActivityNotifies,:as => :activity, :dependent => :destroy
 
@@ -51,7 +54,7 @@ class News < ActiveRecord::Base
                             :author_key => :author_id
   acts_as_watchable
 
-  after_create :act_as_activity,:act_as_forge_activity, :act_as_course_activity,:add_author_as_watcher, :send_mail
+  after_create :act_as_activity,:act_as_forge_activity, :act_as_course_activity,:act_as_course_messge, :add_author_as_watcher, :send_mail
 
   after_destroy :delete_kindeditor_assets
 
@@ -130,6 +133,18 @@ class News < ActiveRecord::Base
     end
   end
 
+  #课程通知 消息发送
+  #消息发送原则：除了消息的发布者，课程的其它成员都能收到消息提醒
+  def act_as_course_messge
+    if self.course
+      self.course.members.each do |m|
+        if m.user_id != self.author_id
+          self.course_messages << CourseMessage.new(:user_id => m.user_id, :course_id => self.course_id, :viewed => false)
+        end
+      end
+    end
+  end
+
   # Time 2015-03-31 13:50:54
   # Author lizanle
   # Description 删除news后删除对应的资源

db/migrate/20150814011838_create_course_messages.rb

@@ -0,0 +1,13 @@
+class CreateCourseMessages < ActiveRecord::Migration
+  def change
+    create_table :course_messages do |t|
+      t.integer :user_id
+      t.integer :course_id
+      t.integer :course_message_id
+      t.string :course_message_type
+      t.integer :viewed
+
+      t.timestamps
+    end
+  end
+end

spec/factories/course_messages.rb

@@ -0,0 +1,10 @@
+FactoryGirl.define do
+  factory :course_message do
+    user_id 1
+course_id 1
+course_message_id 1
+course_message_type "MyString"
+viewed 1
+  end
+
+end