配置Django数据库路由器 [英] Configure Django Database Routers

问题描述

我正在尝试将新的Django站点连接到旧版数据库。从我能收集的所有信息中，我需要创建一个数据库路由器。文档指的是在模型的meta部分中创建app_label。这就是路由器要匹配的内容。我还看到有人说不再支持此功能。我在这里绞尽脑汁，请帮忙！！下面是代码：

I am trying to connect a new Django site to legacy DBs. From everything I can gather I need to create a database router. The docs refer to creating an app_label in the meta section of the model. This is what the router would match to. I have also seen where people say this is not longer supported. I am racking my brain here please help!! Here is the code:

class CucRouter(object):
    def db_for_read(self, model):
        if model._meta.app_label == 'CUCMCDR':
            return 'CUCMCDR'
        return 'default'

这是路由器功能，本质上是文档中的示例。在模型中，我添加了以下行：

That is the router function and is essentially the example from the docs. In the model I added this line:

 app_label = 'CUCMCDR'

这会中断服务器，并返回错误消息

This breaks the server with an error return that there is

没有名为CUCMCDR的应用程序

"no app named CUCMCDR"

（不应存在。CUCMCDR是数据库的名称）

(which there shouldnt be. CUCMCDR is the name of the db)

编辑**我正在从管理面板执行所有操作。我正在尝试仅创建一个APP。也许创建另一个更容易？

Edit** I'm doing this all from the admin panel. I am trying to create just one APP. Maybe it would be easier to create another?

推荐答案

所以我明白了。如果其他任何人都遇到了多个数据库的问题，则这是一个订购问题。您需要将第二个返回值从默认更改为无

SO I got it. If anyone else is running into this problem with multiple dbs it is an ordering issue. You need to change the second return frrom 'default' to 'None'

这篇关于配置Django数据库路由器的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！