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Django1.11.18から2.xにアップデートしたら/adminが500だった話

Posted at

環境

  • Python: 3.6
  • pipenv: 2018.7.1
  • pip: 18.0.0
  • Django: 1.11.18, 2.1.4

執筆したきっかけ

  • AWS CodeStarが作成するDjangoが1.11.18製だったので,2.x系にアップデートしたかったから
  • あくまで備忘録程度です

アップデート後,/adminにアクセスができない

原因を調べると,Python Djangoチュートリアルでadminのページに行けないが参考になりました.
たしかに,公式ドキュメントを見ると,settings.MIDDLEWARE_CLASSESsettings.MIDDLEWAREに置き換わっていました.また,django.contrib.auth.middleware.SessionAuthenticationMiddlewareも削除してください.

よって,下記のように書き換えると解決します.

settings.py

# MIDDLEWARE_CLASSES = [
#     'django.middleware.security.SecurityMiddleware',
#     'django.contrib.sessions.middleware.SessionMiddleware',
#     'django.middleware.common.CommonMiddleware',
#     'django.middleware.csrf.CsrfViewMiddleware',
#     'django.contrib.auth.middleware.AuthenticationMiddleware',
#     'django.contrib.auth.middleware.SessionAuthenticationMiddleware',
#     'django.contrib.messages.middleware.MessageMiddleware',
#     'django.middleware.clickjacking.XFrameOptionsMiddleware',
# ]
MIDDLEWARE = [
    'django.middleware.security.SecurityMiddleware',
    'django.contrib.sessions.middleware.SessionMiddleware',
    'django.middleware.common.CommonMiddleware',
    'django.middleware.csrf.CsrfViewMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    'django.middleware.clickjacking.XFrameOptionsMiddleware',
]

参考

Python Djangoチュートリアルでadminのページに行けない
公式ドキュメント
Django 1.9 から 2.1 に上げる時の備忘録

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