Django 執行 makemigrations 顯示 No changes detected in app

在Django項目配置一下多數據庫，但是運行 makemigrations 執行不正常

$ python manage.py makemigrations polls
No changes detected in app 'polls'

 

models.py 代碼：

class Question(models.Model):
    question_text = models.CharField(max_length=200)
    pub_date = models.DateTimeField('date published')

    class Meta:
        app_label = 'apps.polls'

 

刪除 class Meta，執行成功了。

$ python manage.py makemigrations polls
Migrations for 'polls':
  apps\polls\migrations\0001_initial.py
    - Create model Question

然后執行 python manage.py migrate polls --database=app_db_name，數據庫只產生了django_migrations， 沒有生成對應的表

調整setting.py

DATABASE_APPS_MAPPING = {
    # 'apps.polls': 'db_name',
    'polls': 'db_name',
}

class Question(models.Model):
    question_text = models.CharField(max_length=200)
    pub_date = models.DateTimeField('date published')

    class Meta:
        app_label = 'polls'

　重新執行 makemigrations 和 migrate, 數據庫存成功生成數據表  polls_question。