django中為了擷取某一列資料庫的值，比如擷取某個使用者的密碼：
pswd = user.filter(name__exact=name).values('password')
執行之後傳回的結果是：
希望把value(123456)解析出來
使用了model_to_dict方法，
pswd = user.filter(name__exact=name).values('password')
pswd = model_to_dict(user)
會報錯：
Traceback (most recent call last):
File "C:\Python27\lib\site-packages\django\core\handlers\exception.py", line 41, in inner
response = get_response(request)
File "C:\Python27\lib\site-packages\django\core\handlers\base.py", line 187, in _get_response
response = self.process_exception_by_middleware(e, request)
File "C:\Python27\lib\site-packages\django\core\handlers\base.py", line 185, in _get_response
response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "E:\personal\study\Python\projects\django_demo\booktest\views.py", line 110, in userLoginSubmit
pswd = model_to_dict(user,pswd)
File "C:\Python27\lib\site-packages\django\forms\models.py", line 87, in model_to_dict
opts = instance._meta
AttributeError: 'UserInfoManager' object has no attribute '_meta'
求各位大神指導！！！