Django 应用分库，数据迁移成功，数据库没有生成表
背景：不同应用对应不同数据库，在迁移数据成功后，数据库没有生成表
Django 官网：https://docs.djangoproject.com/ko/1.11/topics/db/multi-db/#allow_migrate
多个数据库有介绍
settings.py 设置
DATABASES = {'default': {'ENGINE': 'django.db.backends.mysql','NAME': 'employee_01','USER':'root','PASSWORD':'Zhb123321@','HOST':'localhost','PORT':3306,},'data_***': {'ENGINE': 'django.db.backends.mysql','NAME': 'data_***_01','USER': 'root','PASSWORD': 'Zhb123321@','HOST': 'localhost','PORT': 3306,},
}
#数据库设置
DATABASE_ROUTERS = ['employee_service0001.db_router.database_router']
DATABASE_APPS_MAPPING = {'platform_***':'default','data_***':'data_***',
}
settings.py 同级文件创建 数据库路由分发 db_router:
from .settings import DATABASE_APPS_MAPPINGDATABASE_MAPPING = DATABASE_APPS_MAPPING# 数据库路由分发
class database_router(object):def db_for_read(self, model, **hints):""""Point all read operations to the specific database.""""""将所有读操作指向特定的数据库。"""if model._meta.app_label in DATABASE_MAPPING:return DATABASE_MAPPING[model._meta.app_label]return Nonedef db_for_write(self, model, **hints):"""Point all write operations to the specific database.""""""将所有写操作指向特定的数据库。"""if model._meta.app_label in DATABASE_MAPPING:return DATABASE_MAPPING[model._meta.app_label]return Nonedef allow_relation(self, obj1, obj2, **hints):"""Allow any relation between apps that use the same database.""""""允许使用相同数据库的应用程序之间的任何关系"""db_obj1 = DATABASE_MAPPING.get(obj1._meta.app_label)db_obj2 = DATABASE_MAPPING.get(obj2._meta.app_label)if db_obj1 and db_obj2:if db_obj1 == db_obj2:return Trueelse:return Falseelse:return Nonedef allow_syncdb(self, db, model):"""Make sure that apps only appear in the related database.""""""确保这些应用程序只出现在相关的数据库中。"""if db in DATABASE_MAPPING.values():return DATABASE_MAPPING.get(model._meta.app_label) == dbelif model._meta.app_label in DATABASE_MAPPING:return Falsereturn Nonedef allow_migrate(self, db, app_label, model=None, **hints):"""Make sure the auth app only appears in the 'auth_db' database.""""""确保身份验证应用程序只出现在“authdb”数据库中。"""if db in DATABASE_MAPPING.values():return DATABASE_MAPPING.get(app_label) == dbelif app_label in DATABASE_MAPPING:return Falsereturn None
模型文件
data_***/models.py:
from django.db import modelsclass IntelligentTableView(models.Model):table_name = models.CharField(max_length=255, verbose_name='报表名称')center = models.CharField(max_length=50, verbose_name='所属中心')on_line = models.CharField(max_length=50, verbose_name='所属线条')remake = models.CharField(max_length=255, verbose_name='备注')create_name = models.CharField(max_length=50, verbose_name='创建人')create_date = models.DateTimeField(auto_now=True, verbose_name='创建时间')is_del = models.BooleanField(default=False, verbose_name='是否删除')class Meta:db_table = 'intelligent_table' # 表名verbose_name = '智能报表'app_label = 'data_center' # 指明app名称，用来对应app 和 数据库的map表
迁移文件
python manage.py makemigrations
python manage.py migrate
迁移成功，但是数据库没有生成对应的表，因为都会跑到默认数据库中
在迁移数据时 添加应用名称:
python manage.py migrate --database=data_center
)
