原来的提交被覆盖了。

app/controllers/courses_controller.rb

@@ -31,17 +31,17 @@ class CoursesController < ApplicationController
 
   def join
     if User.current.logged?
-      if params[:role] == 10
+     # if params[:role] == 10
         cs = CoursesService.new
         @user = User.current
-        join = cs.join_course params,user
+        join = cs.join_course params,@user
         @state = join[:state]
         @course = join[:course]
-      else
-        @course = Course.find_by_id params[:object_id]
-        CourseMessage.create(:user_id => @course.tea_id, :course_id => @course.id, :viewed => false,:content=> params[:role],:course_message_id=>User.current.id,:course_message_type=>'JoinCourseRequest')
-        @state = 6
-      end
+      # else
+      #   @course = Course.find_by_id params[:object_id]
+      #   CourseMessage.create(:user_id => @course.tea_id, :course_id => @course.id, :viewed => false,:content=> params[:role],:course_message_id=>User.current.id,:course_message_type=>'JoinCourseRequest')
+      #   @state = 6
+      # end
     else
       @state = 5 #未登录
     end