Python 如何在django查询中排序?
我在django中有一个名为User as custom User model的表。 我有另一个名为Python 如何在django查询中排序?,python,django,django-queryset,Python,Django,Django Queryset,我在django中有一个名为User as custom User model的表。 我有另一个名为Portfolio和ProjectDetail的模型,它与我的用户模型有ForeignKey关系。表结构如下所示: class ProjectDetail(models.Model): user = models.ForeignKey(settings.AUTH_USER_MODEL) title = models.TextField() category = models
Portfolio
和ProjectDetail
的模型,它与我的用户
模型有ForeignKey
关系。表结构如下所示:
class ProjectDetail(models.Model):
user = models.ForeignKey(settings.AUTH_USER_MODEL)
title = models.TextField()
category = models.CharField(max_length=50, choices=CATEGORY_CHOICES)
description = models.TextField(null=True, blank=True)
vote_count = models.IntegerField(default=0)
class Portfolio(models.Model):
user = models.ForeignKey(settings.AUTH_USER_MODEL)
project = models.ForeignKey(ProjectDetail, null=True, blank=True)
description = models.TextField(null=True, blank=True)
用户模型为:
class User(AbstractBaseUser, PermissionsMixin):
username = models.CharField(_('Username'), unique=True, max_length=100, blank=False, null=False,
help_text=_('20 characters or fewer. Letters, numbers and -/_ characters, no capitals, no spaces'),
)
first_name = models.CharField(_('First Name'), max_length=30, blank=True, null=True)
middle_name = models.CharField(_('Middle Name'), max_length=30, blank=True, null=True)
last_name = models.CharField(_('Last Name'), max_length=30, blank=True, null=True)
about_yourself = models.TextField(null=True, blank=True)
我想找到上传项目最多的用户列表,或者找到公文包最多的用户列表。如何找到按ProjecDetail
数量或Portfolio
数量排序的用户排序列表?用于分组依据:
from django.db.models import Count
#group by portfolios count
User.objects.annotate(portfolios=Count('portfolio')).order_by('portfolios')
#group by projects count
User.objects.annotate(projects=Count('portfolio__project')).order_by('projects')
您正在寻找注释/聚合。见备忘单。