路由策略
# -*- coding: utf-8 -*-
from django.conf import settings 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 == 'yw_monitor':
return 'webmonitor'
return None def db_for_write(self, model, **hints):
"""Point all write operations to the specific database."""
if model._meta.app_label == 'yw_monitor':
return 'webmonitor'
return None def allow_relation(self, obj1, obj2, **hints):
"""Allow any relation between apps that use the same database."""
if obj1._meta.app_label == 'yw_monitor' or obj2._meta.app_label == 'yw_monitor':
return True
return None def allow_migrate(self, db, app_label, model_name=None, **hints):
"""Make sure that apps only appear in the related database.""" if app_label == 'yw_monitor':
return db == 'webmonitor'
return None