django中south支持多数据库

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