小编ric*_*rdk的帖子

本质上，我的问题是，无论我过滤什么内容，以下设置都会返回管理页面中的整个查询集。

模型.py

from django.db import models

class Booking(models.model):
    client = models.ForeignKey(Client)
    reference = models.CharField(max_length=100)
    ....

    def __unicode__(self):
        return self.reference

class Client(models.Model):
    name = models.CharField(max_length=100)
    email = models.EmailField(null=True, blank=True)
    ...

    def __unicode__(self):
        return self.name  

    def total_bookings(self):
        return len(self.booking_set.all())

    def bookings0(self):
        if self.total_bookings() == 0:
            return True

    def bookings1(self):
        if self.total_bookings() == 1:
            return True

    def bookings2(self):
        if self.total_bookings() == 2:
            return True

    def bookings3plus(self):
        if self.total_bookings() > 2:
            return True

...

管理员.py

from django.contrib import admin
from django.contrib.admin import SimpleListFilter
from …