课程添加成员后js提示

app/controllers/members_controller.rb

@@ -133,6 +133,9 @@ class MembersController < ApplicationController
       elsif @course
         course_info = []
         if params[:membership]
+          @create_member_error_messages = "角色不能留空" unless params[:membership][:role_ids]
+          @create_member_error_messages = "用户不能留空" unless params[:membership][:user_ids]
+
           if params[:membership][:user_ids]
             attrs = params[:membership].dup
             user_ids = attrs.delete(:user_ids)
@@ -140,7 +143,7 @@ class MembersController < ApplicationController
               member =  Member.new(:role_ids => params[:membership][:role_ids], :user_id => user_id)
               role = Role.find_by_id(params[:membership][:role_ids])
               # 这里的判断只能通过角色名，可以弄成常量
-              if role.name == "学生" || role.name == "Student"
+              if role && (role.name == "学生" || role.name == "Student")
                 StudentsForCourse.create(:student_id => user_id, :course_id =>@course.id)
               end
               members << member
@@ -159,6 +162,11 @@ class MembersController < ApplicationController
           end
           @course.members << members
           @course.course_infos << course_info
+
+          @roles = Role.givable.all[3..5]
+          members = @course.member_principals.includes(:roles, :principal).all.sort
+        else
+          @create_member_error_messages = l(:label_user_role_null)
         end
         respond_to do |format|
           format.html { redirect_to_settings_in_courses }

app/views/courses/_course_members.html.erb

@@ -11,7 +11,7 @@
     </li>
 
     <div id="course_member_list">
-      <%= render :partial => "member" %>
+      <%= render :partial => "courses/member" %>
     </div>
   </ul>
 </div><!-- 左边-->

app/views/members/create.js.erb

@@ -1,10 +1,5 @@
 <%if @project%>
 $('#tab-content-members').html('<%= escape_javascript(render :partial => 'projects/settings/members') %>');
-<%elsif @course%>
-$('#tab-content-members').html('<%= escape_javascript(render :partial => 'courses/settings/members') %>');
-<%end%>
-
-hideOnLoad();
 
 <%if !@applied_members%>
 <% if @members.present? && @members.all? {|m| m.valid? } %>
@@ -20,3 +15,13 @@ hideOnLoad();
 <% end%>
 <% end %>
 <% end %>
+<%elsif @course%>
+    <% if @create_member_error_messages%>
+        alert("<%= @create_member_error_messages%>");
+    <% else%>
+        $('#tbc_02').html('<%= escape_javascript(render :partial => 'courses/course_members') %>');
+        alert("添加成功");
+    <% end%>
+<%end%>
+
+hideOnLoad();