Question

我有以下代码：

from django.db import Models

class Model1(models.Model):
    #Attributes...


class Model2(models.Model):
    model1_foreign_key = models.ForeignKey(Model1, related_name='some_name', on_delete=models.CASCADE)
    created = models.DateTimeField(auto_now_add=True)

我的目标是通过最新创建外键来订购第一项。例如：

Today is September eighth
Model A is an instance of Model1 and has two models related to it via the foreign key, model B (created on September 5th) and model C (created on September 6th). Assume times don't matter here.
Model D is an instance of Model1 and has another two models related to it via a foreign key, E and F (Created on September 5th and 7th respectively).

允许访问Model1的对象列表，例如Model1.objects.all，如何订购模型，使得模型D排在第一位（它具有9月7日创建的最新Model2对象）。另外，我可以更改以获得相同的结果吗？

Answer 1

您可以使用类似这样的内容：

tax_lvl_n_attr

在此代码中，Model1.objects.all().order_by('-model2__created')是model2的{{1}}，默认情况下是类名。

如何通过外键的属性对Django对象进行排序？

1 个答案: