在django admin中使用代理模型来自定义更改列表视图

Question

I have a model which looks like this :

class Change(models.Model):
    Reference = models.CharField(max_length=100)
    Choices = ((1,"Pending"),(2,"In Progress",),(3,"Closed"))
    Status = models.SmallIntegerField(choices=Choices, default=1, max_length=1)

Since it is not possible to register another Change model,I am using a proxy model called ClosedChange as follows :

class ClosedChange(Change):
    class Meta:
        proxy = True
        verbose_name = u"Closed Changes"

What i want to achieve is that whenever any user changes the status of a change to ,it should disappear from the change list view of and appear in the change list view of and vice versa. How do i achieve this ??

Answer 1

You can specify the queryset in the model admin:

class ChangeAdmin(admin.ModelAdmin):
    def get_queryset(self, request):
        return Change.objects.exclude(status='closed')

class ClosedChangeAdmin(admin.ModelAdmin):
    def get_queryset(self, request):
        return ClosedChange.objects.filter(status='closed')

admin.site.register(Change, ChangeAdmin)
admin.site.register(ClosedChange, ClosedChangeAdmin)