python - 带有 docker 的 Django 不运行自定义应用程序的迁移

Question

我在项目的根目录中创建了一个名为 bay 的自定义应用程序，结构如下所示 -

project_root/  
   - bay/
       - migrations/
           - __init__.py
           - 0001_initial.py
       - models/
           - __init__.py
           - document.py
           - ... (other model files)

当我尝试从自定义应用程序的模型之一保存新模型实例时，出现以下错误 -

postgres_1  | ERROR:  relation "bay_brand" does not exist at character 13
postgres_1  | STATEMENT:  INSERT INTO "bay_brand" ("name") VALUES ('xyz') RETURNING "bay_brand"."id"

因此，给定模型的迁移尚未运行。所以，我尝试迁移 -

sudo docker-compose -f dev.yml run django python manage.py migrate

结果

Postgres is up - continuing...
Operations to perform:
  Apply all migrations: account, admin, auth, contenttypes, sessions, sites, socialaccount, users
Running migrations:
  Applying contenttypes.0001_initial... OK
  Applying contenttypes.0002_remove_content_type_name... OK
  Applying auth.0001_initial... 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 users.0001_initial... OK
  Applying account.0001_initial... OK
  Applying account.0002_email_max_length... OK
  Applying admin.0001_initial... OK
  Applying admin.0002_logentry_remove_auto_add... OK
  Applying sessions.0001_initial... OK
  Applying sites.0001_initial... OK
  Applying sites.0002_alter_domain_unique... OK
  Applying sites.0003_set_site_domain_and_name... OK
  Applying socialaccount.0001_initial... OK
  Applying socialaccount.0002_token_max_lengths... OK
  Applying socialaccount.0003_extra_data_default_dict... OK
  Applying users.0002_auto_20170419_1104... OK

上面显然没有显示它应该运行的bay.0001_initial迁移。因此，我继续查看输出

sudo docker-compose -f dev.yml run django python manage.py makemigrations bay

结果

Postgres is up - continuing...
Migrations for 'bay':
  bay/migrations/0001_initial.py:
    - Create model Brand
    - Create model ...
    - ...

如果我尝试再次运行 migrate 命令，它会显示没有要应用的迁移。

Answer 1

我相信这是一个文件权限问题，在我的迁移中的__init__.py文件和__pycache__文件夹上看到了锁定符号文件夹。最初忽略了它，因为它与我现有应用的 migrations 文件夹中的类似，但这些迁移确实运行良好。

删除了自定义应用中的 migrations 文件夹，运行 makemigrations 命令，然后成功迁移 -

Postgres is up - continuing...
Operations to perform:
  Apply all migrations: account, admin, auth, bay, contenttypes, sessions, sites, socialaccount, users
Running migrations:
  Applying bay.0001_initial... OK