.

app/controllers/wechats_controller.rb

@@ -8,7 +8,7 @@ class WechatsController < ActionController::Base
   # default text responder when no other match
   on :text do |request, content|
       #邀请码
-    if join_request
+    if join_request(request)
       sendBindClass(request, {invite_code: content})
     else
       request.reply.text '您的意见已收到，感谢您的反馈！'