python type_error ai_generated true

TypeError: __init__() missing 1 required positional argument: 'get_response'

ID: python/django-middleware-type-error

Also available as: JSON · Markdown · 中文
80%Fix Rate
85%Confidence
0Evidence
2024-07-15First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
3.x active — — —

Root Cause

Custom middleware class does not accept the get_response argument in __init__.

generic

中文

自定义中间件类的__init__方法没有接受get_response参数。

Workarounds

  1. 95% success Define __init__ with get_response 
    class MyMiddleware:
    def __init__(self, get_response):
        self.get_response = get_response
  2. 90% success Use MiddlewareMixin 
    from django.utils.deprecation import MiddlewareMixin
class MyMiddleware(MiddlewareMixin): ...

Dead Ends

Common approaches that don't work:

  1. Omitting __init__ method 90% fail

    Django middleware requires get_response.

  2. Using wrong signature 80% fail

    Must match exactly.