@ -301,26 +301,46 @@ class CoursesService
#@state == 5 您还未登录
#@state == 6 申请成功，请等待审核完毕
#@state == 7 您已经发送过申请了，请耐心等待
#@state == 8 您已经是该课程的教师了
#@state == 9 您已经是该课程的教辅了
#@state 其他 未知错误，请稍后再试
def join_course params , current_user
course = Course . find_by_id params [ :object_id ]
@state = 10
if course
if course_endTime_timeout? course
@state = 2
else
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
#如果加入角色为学生
if params [ :role ] == " 10 "
@state = 3
elsif current_user . allowed_to? ( :as_teacher , course )
#如果加入角色为学生 并且当前是学生
if params [ :role ] == " 10 " && roleName == " Student "
@state = 3
else
Mailer . run . join_course_request ( course , User . current , params [ :role ] )
#如果加入角色为教师或者教辅
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' , :status = > 0 )
@state = 6
#如果加入的角色为老师，并且当前已经是老师
elsif params [ :role ] == " 9 " && roleName == " Teacher "
@state = 8
#如果加入的角色教辅并且当前为教辅
elsif params [ :role ] == " 7 " && roleName == " TeachingAsistant "
@state = 9
#如果加入角色为教师或者教辅，并且当前是学生，或者是要成为教辅，当前不是教辅，或者要成为教师，当前不是教师。那么要发送请求
elsif ( params [ :role ] != " 10 " && roleName == " Student " ) || ( params [ :role ] == " 7 " && roleName != " TeachingAsistant " ) || ( params [ :role ] == " 9 " && roleName != " Teacher " )
#如果已经发送过消息了，那么就要给个提示
if CourseMessage . where ( " course_message_type = 'JoinCourseRequest' and user_id = #{ course . tea_id } and content = #{ params [ :role ] } and course_message_id = #{ User . current . id } and course_id = #{ course . id } and status = 0 " ) . count != 0
@state = 7
else
Mailer . run . join_course_request ( course , User . current , params [ :role ] )
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' , :status = > 0 )
@state = 6
end
#如果加入角色是学生，但是是当前课程的教师或者教辅
elsif params [ :role ] == " 10 " && roleName != " Student "
member . role_ids = [ params [ :role ] ]
member . save
StudentsForCourse . create ( :student_id = > current_user . id , :course_id = > params [ :object_id ] )
@state = 0
end
else
@state = 1
