settings的DATABASES配置成多个，其中一个是default,其他的用appname来做key;
然后指明一个route文件，来做数据库路由
DATABASE_ROUTERS = [
'meila_admin.route.Router',
]
再来实现这个route.py
from django.db import DEFAULT_DB_ALIAS
appnames = ['**', '**'] #这里是用非默认数据库的app
class Router(object):
"""
A router to control all database operations on models in the
auth application.
"""
def db_for_read(self, model, **hints):
"""
Attempts to read auth models go to auth_db.
"""
if model._meta.app_label in appnames:
return model._meta.app_label
return None
def db_for_write(self, model, **hints):
"""
Attempts to write auth models go to auth_db.
"""
if model._meta.app_label in appnames:
return model._meta.app_label
return None
def allow_relation(self, obj1, obj2, **hints):
return True
def allow_syncdb(self, db, model):
"""
Make sure the auth app only appears in the 'auth_db'
database.
"""
if model._meta.app_label in ['south']:
return True
if db in appnames:
return model._meta.app_label == db
elif db == DEFAULT_DB_ALIAS and model._meta.app_label not in appnames:
return True
return False
#注意第一次south其他数据库时，需要用syncdb