.

app/services/courses_service.rb

@@ -334,7 +334,7 @@ class CoursesService
         if current_user.member_of_course?(course) #如果已经是成员
           member = course.members.where("user_id=#{current_user.id} and course_id=#{course.id}")[0]
           roleName = member.roles[0].name if member
-          if params[:course_password] == course.password
+          if params[:course_password] == course.password || params[:invite_code].present?
             #如果加入角色为学生 并且当前是学生
             if params[:role] == "10" && roleName == "Student"
               @state = 3
@@ -367,7 +367,7 @@ class CoursesService
             @state = 1
           end
         else
-          if params[:course_password] == course.password
+          if params[:course_password] == course.password || params[:invite_code].present?
             if params[:role] == "10" || params[:role] == nil
               members = []
               members << Member.new(:role_ids => [10], :user_id => current_user.id)