herokuにdeployしたDjangoアプリケーションのデータベースがmigrateできない

問題点

詳細

ローカルでは、問題なくmigrateできるアプリがherokuにdeployするとうまくmigrateが動作しなくなる。

具体的な状況は、Djangoでデータベースを使用しない簡易的なアプリケーションを作成後、ネットの様々な情報からsetting.pyなどを変更しherokuにdeployしたが、createsuperuserが作成出来ない。migrate自体にはOKの文字が出るが、showmigrationsでは[x]が１つもつかない。

発生している問題・エラーメッセージ

python manage.py createsuperuser 実行時

(.env) ... % heroku run python manage.py createsuperuser
Running python manage.py createsuperuser on ⬢ serene-fortress-94071... up, run.9498 (Basic)

You have 18 unapplied migration(s). Your project may not work properly until you apply the migrations for app(s): admin, auth, contenttypes, sessions.
Run 'python manage.py migrate' to apply them.
Traceback (most recent call last):
  File "/app/.heroku/python/lib/python3.10/site-packages/django/db/backends/utils.py", line 89, in _execute
    return self.cursor.execute(sql, params)
  File "/app/.heroku/python/lib/python3.10/site-packages/django/db/backends/sqlite3/base.py", line 357, in execute
    return Database.Cursor.execute(self, query, params)
sqlite3.OperationalError: no such table: auth_user

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/app/manage.py", line 22, in <module>
    main()
  File "/app/manage.py", line 18, in main
    execute_from_command_line(sys.argv)
  File "/app/.heroku/python/lib/python3.10/site-packages/django/core/management/__init__.py", line 446, in execute_from_command_line
    utility.execute()
  File "/app/.heroku/python/lib/python3.10/site-packages/django/core/management/__init__.py", line 440, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/app/.heroku/python/lib/python3.10/site-packages/django/core/management/base.py", line 402, in run_from_argv
    self.execute(*args, **cmd_options)
  File "/app/.heroku/python/lib/python3.10/site-packages/django/contrib/auth/management/commands/createsuperuser.py", line 88, in execute
    return super().execute(*args, **options)
  File "/app/.heroku/python/lib/python3.10/site-packages/django/core/management/base.py", line 448, in execute
    output = self.handle(*args, **options)
  File "/app/.heroku/python/lib/python3.10/site-packages/django/contrib/auth/management/commands/createsuperuser.py", line 109, in handle
    default_username = get_default_username(database=database)

...

    return Database.Cursor.execute(self, query, params)
django.db.utils.OperationalError: no such table: auth_user

python manage.py migrate 実行時

(.env) ... % heroku run python manage.py migrate       
Running python manage.py migrate on ⬢ serene-fortress-94071... up, run.7191 (Basic)
Operations to perform:
  Apply all migrations: admin, auth, contenttypes, sessions
Running migrations:
  Applying contenttypes.0001_initial... OK
  Applying auth.0001_initial... OK
  Applying admin.0001_initial... OK
  Applying admin.0002_logentry_remove_auto_add... OK
  Applying admin.0003_logentry_add_action_flag_choices... OK
  Applying contenttypes.0002_remove_content_type_name... OK
  Applying auth.0002_alter_permission_name_max_length... OK
  Applying auth.0003_alter_user_email_max_length... OK
  Applying auth.0004_alter_user_username_opts... OK
  Applying auth.0005_alter_user_last_login_null... OK
  Applying auth.0006_require_contenttypes_0002... OK
  Applying auth.0007_alter_validators_add_error_messages... OK
  Applying auth.0008_alter_user_username_max_length... OK
  Applying auth.0009_alter_user_last_name_max_length... OK
  Applying auth.0010_alter_group_name_max_length... OK
  Applying auth.0011_update_proxy_permissions... OK
  Applying auth.0012_alter_user_first_name_max_length... OK
  Applying sessions.0001_initial... OK

python manage.py showmigrations 実行時

(.env) ... % heroku run python manage.py showmigrations
Running python manage.py showmigrations on ⬢ serene-fortress-94071... up, run.5713 (Basic)
admin
 [ ] 0001_initial
 [ ] 0002_logentry_remove_auto_add
 [ ] 0003_logentry_add_action_flag_choices
app
 (no migrations)
auth
 [ ] 0001_initial
 [ ] 0002_alter_permission_name_max_length
 [ ] 0003_alter_user_email_max_length
 [ ] 0004_alter_user_username_opts
 [ ] 0005_alter_user_last_login_null
 [ ] 0006_require_contenttypes_0002
 [ ] 0007_alter_validators_add_error_messages
 [ ] 0008_alter_user_username_max_length
 [ ] 0009_alter_user_last_name_max_length
 [ ] 0010_alter_group_name_max_length
 [ ] 0011_update_proxy_permissions
 [ ] 0012_alter_user_first_name_max_length
contenttypes
 [ ] 0001_initial
 [ ] 0002_remove_content_type_name
sessions
 [ ] 0001_initial

該当のソースコード

python3
1"""
2Django settings for AutoPost project.
3
4Generated by 'django-admin startproject' using Django 4.1.6.
5
6For more information on this file, see
7https://docs.djangoproject.com/en/4.1/topics/settings/
8
9For the full list of settings and their values, see
10https://docs.djangoproject.com/en/4.1/ref/settings/
11"""
12
13from pathlib import Path
14import dj_database_url
15import os
16
17# Build paths inside the project like this: BASE_DIR / 'subdir'.
18BASE_DIR = Path(__file__).resolve().parent.parent
19# BASE_DIR = dev/APapp/AutoPost
20
21ALLOWED_HOSTS = ['.herokuapp.com']
22
23
24# Application definition
25
26INSTALLED_APPS = [
27    'django.contrib.admin',
28    'django.contrib.auth',
29    'django.contrib.contenttypes',
30    'django.contrib.sessions',
31    'django.contrib.messages',
32    'django.contrib.staticfiles',
33    'app',
34]
35
36MIDDLEWARE = [
37    'django.middleware.security.SecurityMiddleware',
38    'django.contrib.sessions.middleware.SessionMiddleware',
39    'django.middleware.common.CommonMiddleware',
40    'django.middleware.csrf.CsrfViewMiddleware',
41    'django.contrib.auth.middleware.AuthenticationMiddleware',
42    'django.contrib.messages.middleware.MessageMiddleware',
43    'django.middleware.clickjacking.XFrameOptionsMiddleware',
44]
45
46ROOT_URLCONF = 'AutoPost.urls'
47
48TEMPLATES = [
49    {
50        'BACKEND': 'django.template.backends.django.DjangoTemplates',
51        'DIRS': [
52            BASE_DIR / 'app' / 'templates'
53        ],
54        'APP_DIRS': True,
55        'OPTIONS': {
56            'context_processors': [
57                'django.template.context_processors.debug',
58                'django.template.context_processors.request',
59                'django.contrib.auth.context_processors.auth',
60                'django.contrib.messages.context_processors.messages',
61            ],
62        },
63    },
64]
65
66WSGI_APPLICATION = 'AutoPost.wsgi.application'
67
68
69# Database
70# https://docs.djangoproject.com/en/4.1/ref/settings/#databases
71
72DATABASES = {
73    'default': {
74        'ENGINE': 'django.db.backends.postgresql_psycopg2',
75        'NAME': 'name',
76        'USER': 'user',
77        'PASSWORD': '',
78        'HOST': 'host',
79        'PORT': '',
80    }
81}
82
83
84# Password validation
85# https://docs.djangoproject.com/en/4.1/ref/settings/#auth-password-validators
86
87AUTH_PASSWORD_VALIDATORS = [
88    {
89        'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',
90    },
91    {
92        'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator',
93    },
94    {
95        'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',
96    },
97    {
98        'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',
99    },
100]
101
102
103# Internationalization
104# https://docs.djangoproject.com/en/4.1/topics/i18n/
105
106LANGUAGE_CODE = 'ja'
107
108TIME_ZONE = 'Asia/Tokyo'
109
110USE_I18N = True
111
112USE_TZ = True
113
114
115# Static files (CSS, JavaScript, Images)
116# https://docs.djangoproject.com/en/4.1/howto/static-files/
117
118STATIC_URL = 'static/'
119STATIC_ROOT = os.path.join(BASE_DIR, 'staticfiles')
120
121# Default primary key field type
122# https://docs.djangoproject.com/en/4.1/ref/settings/#default-auto-field
123
124DEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField'
125
126db_from_env = dj_database_url.config(conn_max_age=600, ssl_require=True)
127DATABASES['default'].update(db_from_env)
128
129DEBUG = False
130
131try:
132    # 存在する場合、ローカルの設定読み込み
133    from .local_settings import *
134except ImportError:
135    pass
136
137if not DEBUG:
138    SECRET_KEY = os.environ['SECRET_KEY']
139    import django_heroku #追加
140    django_heroku.settings(locals())