Django admin 使用多个数据库

admin是django自带的一个app，那它涉及的是对Model的所有对象进行增删改查，如果model来自多个数据库如何处理呢？

重写admin.ModelAdmin的如下几个方法就好了：

class MultiDBModelAdmin(admin.ModelAdmin):

    # A handy constant for the name of the alternate database.

    using = 'other'

    def save_model(self, request, obj, form, change):

        # Tell Django to save objects to the 'other' database.

        obj.save(using=self.using)

    def delete_model(self, request, obj):

        # Tell Django to delete objects from the 'other' database

        obj.delete(using=self.using)

    def get_queryset(self, request):

        # Tell Django to look for objects on the 'other' database.

        return super(MultiDBModelAdmin, self).get_queryset(request).using(self.using)

    def formfield_for_foreignkey(self, db_field, request, **kwargs):

        # Tell Django to populate ForeignKey widgets using a query

        # on the 'other' database.

        return super(MultiDBModelAdmin, self).formfield_for_foreignkey(db_field, request, using=self.using, **kwargs)

    def formfield_for_manytomany(self, db_field, request, **kwargs):

        # Tell Django to populate ManyToMany widgets using a query

        # on the 'other' database.

        return super(MultiDBModelAdmin, self).formfield_for_manytomany(db_field, request, using=self.using, **kwargs)

　　MultiDBModelAdmin类继承admin.ModelAdmin

然后需要使用这个数据库连接的model直接继承这个类就可以了。

class UserInfoAdmin(MultiDBModelAdmin):

    list_display = ('user_name', 'user_email', 'user_mobile')

参考：https://docs.djangoproject.com/en/1.10/topics/db/multi-db/#topics-db-multi-db-routing

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Django admin 使用多个数据库

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