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本篇文章給大家分享的是有關怎么在django中運行多個數據庫,小編覺得挺實用的,因此分享給大家學習,希望大家閱讀完這篇文章后可以有所收獲,話不多說,跟著小編一起來看看吧。
DATABASE_APPS_MAPPING = { # example: # 'app_name':'database_name', # 'admin': 'default', # 'users': 'default', #django 'basic_estate': 'basic_estate', 'footstone': 'footstone', 'mall': 'hsmall', 'iot_biz': 'iot_biz', 'mall': 'mall', 'hsuser': 'hsuser', }
如果要解決這個問題可以修改router代碼,在映射關系內找不到對應的數據庫的情況下返回默認數據庫連接即可:
# -*- coding: utf-8 -*- """ @author: obaby @license: (C) Copyright 2013-2020, obaby@mars. @contact: root@obaby.org.cn @link: http://www.obaby.org.cn http://www.h5ck.org.cn http://www.findu.co @file: atabase_router.py.py @time: 2021/2/26 9:07 @desc: """ from django.conf import settings DATABASE_MAPPING = settings.DATABASE_APPS_MAPPING class DatabaseAppsRouter(object): """ A router to control all database operations on models for different databases. In case an app is not set in settings.DATABASE_APPS_MAPPING, the router will fallback to the `default` database. Settings example: DATABASE_APPS_MAPPING = {'app1': 'db1', 'app2': 'db2'} """ def db_for_read(self, model, **hints): """"Point all read operations to the specific database.""" if model._meta.app_label in DATABASE_MAPPING: return DATABASE_MAPPING[model._meta.app_label] return 'default' def db_for_write(self, model, **hints): """Point all write operations to the specific database.""" if model._meta.app_label in DATABASE_MAPPING: return DATABASE_MAPPING[model._meta.app_label] return 'default' def allow_relation(self, obj1, obj2, **hints): """Allow any relation between apps that use the same database.""" 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 True else: return False return None def allow_syncdb(self, db, model): """Make sure that apps only appear in the related database.""" if db in DATABASE_MAPPING.values(): return DATABASE_MAPPING.get(model._meta.app_label) == db elif model._meta.app_label in DATABASE_MAPPING: return False return None def allow_migrate(self, db, app_label, model=None, **hints): """ Make sure the auth app only appears in the 'auth_db' database. """ if db in DATABASE_MAPPING.values(): return DATABASE_MAPPING.get(app_label) == db elif app_label in DATABASE_MAPPING: return False return None
以上就是怎么在django中運行多個數據庫,小編相信有部分知識點可能是我們日常工作會見到或用到的。希望你能通過這篇文章學到更多知識。更多詳情敬請關注億速云行業資訊頻道。
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