DjangoをHerokuにデプロイした後にmanage.py migrateで例外エラーが発生する

Djangoアプリをherokuにデプロイする練習を行なっている際に以下のエラーが発生して解決できません。
ご存知の方、ご助言頂けると幸いです。

環境

macOS 10.14.2
PyCharm 2018.2

現状

Herokuにはデプロイができている（Build succeededがログに出ている）
heroku run python manage.py migrateコマンドを実行すると下記のエラーが発生する

英語サイトなど一通り調べて解決できていない現状です。

bash
1Traceback (most recent call last):
2  File "/app/.heroku/python/lib/python3.6/site-packages/django_heroku/core.py", line 97, in settings
3    config['MIDDLEWARE_CLASSES'] = tuple(['whitenoise.middleware.WhiteNoiseMiddleware'] + list(config['MIDDLEWARE_CLASSES']))
4KeyError: 'MIDDLEWARE_CLASSES'
5
6During handling of the above exception, another exception occurred:
7
8Traceback (most recent call last):
9  File "manage.py", line 15, in <module>
10    execute_from_command_line(sys.argv)
11  File "/app/.heroku/python/lib/python3.6/site-packages/django/core/management/__init__.py", line 381, in execute_from_command_line
12    utility.execute()
13  File "/app/.heroku/python/lib/python3.6/site-packages/django/core/management/__init__.py", line 325, in execute
14    settings.INSTALLED_APPS
15  File "/app/.heroku/python/lib/python3.6/site-packages/django/conf/__init__.py", line 57, in __getattr__
16    self._setup(name)
17  File "/app/.heroku/python/lib/python3.6/site-packages/django/conf/__init__.py", line 44, in _setup
18    self._wrapped = Settings(settings_module)
19  File "/app/.heroku/python/lib/python3.6/site-packages/django/conf/__init__.py", line 107, in __init__
20    mod = importlib.import_module(self.SETTINGS_MODULE)
21  File "/app/.heroku/python/lib/python3.6/importlib/__init__.py", line 126, in import_module
22    return _bootstrap._gcd_import(name[level:], package, level)
23  File "<frozen importlib._bootstrap>", line 994, in _gcd_import
24  File "<frozen importlib._bootstrap>", line 971, in _find_and_load
25  File "<frozen importlib._bootstrap>", line 955, in _find_and_load_unlocked
26  File "<frozen importlib._bootstrap>", line 665, in _load_unlocked
27  File "<frozen importlib._bootstrap_external>", line 678, in exec_module
28  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
29  File "/app/sample_my_app/settings.py", line 35, in <module>
30    django_heroku.settings(locals())
31  File "/app/.heroku/python/lib/python3.6/site-packages/django_heroku/core.py", line 99, in settings
32    config['MIDDLEWARE'] = tuple(['whitenoise.middleware.WhiteNoiseMiddleware'] + list(config['MIDDLEWARE']))
33KeyError: 'MIDDLEWARE'
34(venv) sawayoserunoMBP:sample_my_app sawayoshiteru$ heroku run python manage.py migrate
35Running python manage.py migrate on ⬢ deploysample0115... up, run.2759 (Free)
36Traceback (most recent call last):
37  File "/app/.heroku/python/lib/python3.6/site-packages/django_heroku/core.py", line 97, in settings
38    config['MIDDLEWARE_CLASSES'] = tuple(['whitenoise.middleware.WhiteNoiseMiddleware'] + list(config['MIDDLEWARE_CLASSES']))
39KeyError: 'MIDDLEWARE_CLASSES'
40
41During handling of the above exception, another exception occurred:
42
43Traceback (most recent call last):
44  File "manage.py", line 15, in <module>
45    execute_from_command_line(sys.argv)
46  File "/app/.heroku/python/lib/python3.6/site-packages/django/core/management/__init__.py", line 381, in execute_from_command_line
47    utility.execute()
48  File "/app/.heroku/python/lib/python3.6/site-packages/django/core/management/__init__.py", line 325, in execute
49    settings.INSTALLED_APPS
50  File "/app/.heroku/python/lib/python3.6/site-packages/django/conf/__init__.py", line 57, in __getattr__
51    self._setup(name)
52  File "/app/.heroku/python/lib/python3.6/site-packages/django/conf/__init__.py", line 44, in _setup
53    self._wrapped = Settings(settings_module)
54  File "/app/.heroku/python/lib/python3.6/site-packages/django/conf/__init__.py", line 107, in __init__
55    mod = importlib.import_module(self.SETTINGS_MODULE)
56  File "/app/.heroku/python/lib/python3.6/importlib/__init__.py", line 126, in import_module
57    return _bootstrap._gcd_import(name[level:], package, level)
58  File "<frozen importlib._bootstrap>", line 994, in _gcd_import
59  File "<frozen importlib._bootstrap>", line 971, in _find_and_load
60  File "<frozen importlib._bootstrap>", line 955, in _find_and_load_unlocked
61  File "<frozen importlib._bootstrap>", line 665, in _load_unlocked
62  File "<frozen importlib._bootstrap_external>", line 678, in exec_module
63  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
64  File "/app/sample_my_app/settings.py", line 35, in <module>
65    django_heroku.settings(locals())
66  File "/app/.heroku/python/lib/python3.6/site-packages/django_heroku/core.py", line 99, in settings
67    config['MIDDLEWARE'] = tuple(['whitenoise.middleware.WhiteNoiseMiddleware'] + list(config['MIDDLEWARE']))
68KeyError: 'MIDDLEWARE'
69

setting.py

python
1"""
2Django settings for sample_my_app project.
3
4Generated by 'django-admin startproject' using Django 2.1.5.
5
6For more information on this file, see
7https://docs.djangoproject.com/en/2.1/topics/settings/
8
9For the full list of settings and their values, see
10https://docs.djangoproject.com/en/2.1/ref/settings/
11"""
12
13import os
14
15# Build paths inside the project like this: os.path.join(BASE_DIR, ...)
16BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
17
18
19# Quick-start development settings - unsuitable for production
20# See https://docs.djangoproject.com/en/2.1/howto/deployment/checklist/
21
22# SECURITY WARNING: keep the secret key used in production secret!
23SECRET_KEY = '4_ib34x=5prpuc!&lt$77^#u7t6%pq6pks07y2pcupg-q!13md'
24
25# SECURITY WARNING: don't run with debug turned on in production!
26DEBUG = False
27
28try:
29    from .local_settings import *
30except ImportError:
31    pass
32
33if not DEBUG:
34    import django_heroku
35    django_heroku.settings(locals())
36
37# デプロイ作業後 ログ設定
38LOGGING = {
39    'version': 1,
40    'disable_existing_loggers': False,
41    'handlers': {
42        'console': {
43            'class': 'logging.StreamHandler',
44        },
45    },
46    'loggers': {
47        'django': {
48            'handlers': ['console'],
49            'level': os.getenv('DJANGO_LOG_LEVEL', 'DEBUG'),
50        },
51    },
52}
53
54ALLOWED_HOSTS = ["*"]
55
56
57# Application definition
58
59INSTALLED_APPS = [
60    'django.contrib.admin',
61    'django.contrib.auth',
62    'django.contrib.contenttypes',
63    'django.contrib.sessions',
64    'django.contrib.messages',
65    'django.contrib.staticfiles',
66    'my_app.apps.MyAppConfig',
67]
68
69MIDDLEWARE = [
70    'django.middleware.security.SecurityMiddleware',
71    'whitenoise.middleware.WhiteNoiseMiddleware',
72    'django.contrib.sessions.middleware.SessionMiddleware',
73    'django.middleware.common.CommonMiddleware',
74    'django.middleware.csrf.CsrfViewMiddleware',
75    'django.contrib.auth.middleware.AuthenticationMiddleware',
76    'django.contrib.messages.middleware.MessageMiddleware',
77    'django.middleware.clickjacking.XFrameOptionsMiddleware',
78]
79
80ROOT_URLCONF = 'sample_my_app.urls'
81
82TEMPLATES = [
83    {
84        'BACKEND': 'django.template.backends.django.DjangoTemplates',
85        'DIRS': [os.path.join(BASE_DIR, 'templates')]
86        ,
87        'APP_DIRS': True,
88        'OPTIONS': {
89            'context_processors': [
90                'django.template.context_processors.debug',
91                'django.template.context_processors.request',
92                'django.contrib.auth.context_processors.auth',
93                'django.contrib.messages.context_processors.messages',
94            ],
95        },
96    },
97]
98
99WSGI_APPLICATION = 'sample_my_app.wsgi.application'
100
101
102# Database
103# https://docs.djangoproject.com/en/2.1/ref/settings/#databases
104
105DATABASES = {
106    'default': {
107        'ENGINE': 'django.db.backends.sqlite3',
108        'NAME': os.path.join(BASE_DIR, 'db.sqlite3'),
109    }
110}
111
112# Parse database configuration from $DATABASE_URL
113import dj_database_url
114db_from_env = dj_database_url.config()
115DATABASES['default'].update(db_from_env)
116
117
118# Password validation
119# https://docs.djangoproject.com/en/2.1/ref/settings/#auth-password-validators
120
121AUTH_PASSWORD_VALIDATORS = [
122    {
123        'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',
124    },
125    {
126        'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator',
127    },
128    {
129        'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',
130    },
131    {
132        'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',
133    },
134]
135
136
137# Internationalization
138# https://docs.djangoproject.com/en/2.1/topics/i18n/
139
140LANGUAGE_CODE = 'ja'
141
142TIME_ZONE = 'Asia/Tokyo'
143
144USE_I18N = True
145
146USE_L10N = True
147
148USE_TZ = True
149
150
151# Static files (CSS, JavaScript, Images)
152# https://docs.djangoproject.com/en/2.1/howto/static-files/
153
154STATIC_URL = '/static/'
155STATIC_ROOT = os.path.join(BASE_DIR, 'my_app/static/')

参考サイト

以下のサイトを参考にデプロイ作業を進めておりました。

https://qiita.com/okoppe8/items/76cdb202eb15aab566d1

以上、お手数ですがご回答宜しくお願いします。

行動規範の内容に同意します

回答1件

ベストアンサー

settings.py の django_heroku.settings(locals()) が実行された時点で MIDDLEWARE という名前が無いよ、というエラーのようですので、 django_heroku.settings(locals()) 周辺の行をもう少し下の方に移動されるとよいのではないかと思います。

Django-Heroku の README を確認すると、次のように「 at the very bottom 」と書かれているので、まずはドキュメントに忠実に使ってみるとよいのではないでしょうか。

rst
1## Usage of Django-Heroku
2
3
4In ``settings.py``, at the very bottom::
5
6    …
7    # Configure Django App for Heroku.
8    import django_heroku
9    django_heroku.settings(locals())