Django - 用虚拟字段设计模型？

from django.db import models

class Person(models.Model):
    first_name = models.CharField(max_length=30)
    last_name = models.CharField(max_length=30)

    def _get_full_name(self):
        return f"{self.first_name} {self.last_name}"

    full_name = property(_get_full_name)

person = Person(first_name="John", last_name="Doe")
print(person.full_name)  # 输出 "John Doe"

sorted_people = Person.objects.all().order_by('first_name', 'last_name')