新版本的django-model-utils没有PassThroughManager

Question

我使用的是Django 1.9.9，那么如何编辑我的模型而不是PassThroughManager呢？

from model_utils.managers import PassThroughManager

class TopicQuerySet(QuerySet):

    def get_topic_today(self):
        return self.filter(created_at__day=datetime.date.today()).order_by('title')

    def get_topic_popular(self):
        return self.annotate(entry_count=Count('entry')).order_by('-entry_count')


class Topic(TimeStampModel):

    objects = PassThroughManager.for_queryset_class(TopicQuerySet)()

我是否应该尝试使用GeoManager

Answer 1

新版本的Django (我相信是1.9+)有一些类似PassThroughManager的内置(model_utils)功能。像这样重写，你应该会得到相同的概念：

from django.db.models import Manager
from django.db.models.query import QuerySet

class TopicManager(Manager):
    pass

class TopicQuerySet(QuerySet):

    def get_topic_today(self):
        return self.filter(created_at__day=datetime.date.today()).order_by('title')

    def get_topic_popular(self):
        return self.annotate(entry_count=Count('entry')).order_by('-entry_count')

class Topic(TimeStampModel):
    objects = TopicManager.from_queryset(TopicQuerySet)()