add migrate script

account/views/oj.py

@@ -209,17 +209,17 @@ class UserRegisterAPI(APIView):
         """
         User register api
         """
-
         if not SysOptions.allow_register:
             return self.error("Register function has been disabled by admin")
 
         data = request.data
+        data["username"] = data["username"].lower()
+        data["email"] = data["email"].lower()
         captcha = Captcha(request)
         if not captcha.check(data["captcha"]):
             return self.error("Invalid captcha")
         if User.objects.filter(username=data["username"]).exists():
             return self.error("Username already exists")
-        data["email"] = data["email"].lower()
         if User.objects.filter(email=data["email"]).exists():
             return self.error("Email already exists")
         user = User.objects.create(username=data["username"], email=data["email"])