老师将课程成员拉入或者移出项目时，给出相应的消息通知

app/controllers/members_controller.rb

@@ -159,6 +159,14 @@ class MembersController < ApplicationController
               if role && (role.name == "学生" || role.name == "Student")
                 StudentsForCourse.create(:student_id => user_id, :course_id =>@course.id)
               end
+
+              #给新成员和老师发送加入课程的消息，发送者id放在CourseMessage的course_message_id字段中
+              #course_message_type设置为JoinCourse
+              #status = 0 表示给学生发，status = 1表示给老师发
+              course_join = CourseMessage.new(:user_id =>user_id, :course_message_id=>User.current.id,:course_id => @course.id,:course_message_type=>"JoinCourse", :viewed => false, :status => 0)
+              course_join.save
+              CourseMessage.create(:user_id => User.current.id, :course_message_id => user_id, :course_id => @course.id, :course_message_type => "JoinCourse", :viewed => false, status => 1)
+
               members << member
               #user_grades << UserGrade.new(:user_id => user_id, :course_id => @course.id)
               if (params[:membership][:role_ids])
@@ -305,7 +313,8 @@ class MembersController < ApplicationController
             grade.destroy
           end
         end
-         ForgeMessage.create(:user_id => @member.user_id, :project_id => @project.id, :forge_message_type => "RemoveFromProject", :viewed => false, :forge_message_id => User.current.id)
+        #移出项目发送消息
+        ForgeMessage.create(:user_id => @member.user_id, :project_id => @project.id, :forge_message_type => "RemoveFromProject", :viewed => false, :forge_message_id => User.current.id)
       end
       respond_to do |format|
         format.html { redirect_to_settings_in_projects }
@@ -333,6 +342,8 @@ class MembersController < ApplicationController
         end
         @roles = Role.givable.all[3..5]
         @members = @course.member_principals.includes(:roles, :principal).all.sort
+        #移出课程发送消息
+        CourseMessage.create(:user_id => @member.user_id, :course_id => @course.id, :course_message_type => "RemoveFromCourse", :viewed => false, :course_message_id => User.current.id)
       end
       respond_to do |format|
         format.html { redirect_to_settings_in_courses }

app/views/users/_user_message_course.html.erb

@@ -503,4 +503,64 @@
           <li class="homepageNewsTime fl"><%= time_tag(ma.created_at).html_safe %> </li>
         </ul>
     <% end %>
+
+    <!--被老师拉入课程-->
+    <% if ma.course_message_type == "JoinCourse" %>
+        <ul class="homepageNewsList fl">
+          <li class="homepageNewsPortrait fl">
+            <a href="javascript:void(0);"><%=link_to image_tag(url_to_avatar(User.find(ma.course_message_id)), :width => "30", :height => "30"), user_path(ma.course_message_id) %></a>
+          </li>
+          <li class="homepageNewsPubType fl">
+            <%=link_to User.find(ma.course_message_id), user_path(User.find(ma.course_message_id)), :class => "newsBlue homepageNewsPublisher" %>
+            <span class="<%= ma.viewed == 0 ? "homepageNewsTypeNotRead fl" : "homepageNewsType fl" %>">将您加入了课程：</span>
+          </li>
+          <li class="homepageNewsContent fl"><a href="javascript:void(0);" class="newsGrey">
+            <%= link_to ma.course.name, course_member_path(ma.course), :class => "#{ma.viewed == 0 ? "newsBlack" : "newsGrey"}",
+                        :onmouseover => "message_titile_show($(this),event)",
+                        :onmouseout => "message_titile_hide($(this))" %></a>
+          </li>
+          <div style="display: none" class="message_title_red system_message_style">
+            <% if ma.course.is_public? || User.current.member_of_course?(ma.course) || User.current.admin? %>
+                <p>课程名称：<%= ma.course.name %>(<%= ma.course.time.to_s + '年'+ ma.course.term %>)</p>
+                <p>课程描述：<%= ma.course.description.blank? ? '无':ma.course.description %></p>
+                <p>课时总数：<%= ma.course.class_period %></p>
+            <% else %>
+                <p>
+                  您已经被移出该私有课程，非课程成员没有权限访问私有课程
+                </p>
+            <% end %>
+          </div>
+          <li class="homepageNewsTime fl"><%= time_tag(ma.created_at).html_safe %> </li>
+        </ul>
+    <% end %>
+    
+    <!-被老师移出课程-->
+    <% if ma.course_message_type == "RemoveFromCourse" %>
+        <ul class="homepageNewsList fl">
+          <li class="homepageNewsPortrait fl">
+            <a href="javascript:void(0);"><%=link_to image_tag(url_to_avatar(User.find(ma.course_message_id)), :width => "30", :height => "30"), user_path(ma.course_message_id) %></a>
+          </li>
+          <li class="homepageNewsPubType fl">
+            <%=link_to User.find(ma.course_message_id), user_path(User.find(ma.course_message_id)), :class => "newsBlue homepageNewsPublisher" %>
+            <span class="<%= ma.viewed == 0 ? "homepageNewsTypeNotRead fl" : "homepageNewsType fl" %>">将您移出了课程：</span>
+          </li>
+          <li class="homepageNewsContent fl"><a href="javascript:void(0);" class="newsGrey">
+            <%= link_to ma.course.name, member_course_path(ma.course), :class => "#{ma.viewed == 0 ? "newsBlack" : "newsGrey"}",
+                        :onmouseover => "message_titile_show($(this),event)",
+                        :onmouseout => "message_titile_hide($(this))" %></a>
+          </li>
+          <div style="display: none" class="message_title_red system_message_style">
+            <% if ma.course.is_public? || User.current.member_of?(ma.course) || User.current.admin? %>
+                <p>课程名称：<%= ma.course.name %>(<%= ma.course.time.to_s + '年'+ ma.course.term %>)</p>
+                <p>课程描述：<%= ma.course.description.blank? ? '无' : ma.course.description %></p>
+                <p>学时总数：<%= ma.course.class_period %></p>
+            <% else %>
+                <p>
+                  您已经被移出该私有课程，非课程成员没有权限访问私有课程
+                </p>
+            <% end %>
+          </div>
+          <li class="homepageNewsTime fl"><%= time_tag(ma.created_at).html_safe %> </li>
+        </ul>
+    <% end %>
 <% end %>