mirror of
https://github.com/django/django.git
synced 2024-12-22 17:16:24 +00:00
44 lines
1.1 KiB
Python
44 lines
1.1 KiB
Python
from django.db import models
|
|
|
|
|
|
class Account(models.Model):
|
|
num = models.IntegerField()
|
|
|
|
|
|
class Person(models.Model):
|
|
GENDER_CHOICES = (
|
|
("M", "Male"),
|
|
("F", "Female"),
|
|
)
|
|
name = models.CharField(max_length=20)
|
|
gender = models.CharField(max_length=1, choices=GENDER_CHOICES)
|
|
pid = models.IntegerField(null=True, default=None)
|
|
|
|
|
|
class Employee(Person):
|
|
employee_num = models.IntegerField(default=0)
|
|
profile = models.ForeignKey(
|
|
"Profile", models.SET_NULL, related_name="profiles", null=True
|
|
)
|
|
accounts = models.ManyToManyField("Account", related_name="employees", blank=True)
|
|
|
|
|
|
class NonConcreteField(models.IntegerField):
|
|
def db_type(self, connection):
|
|
return None
|
|
|
|
def get_attname_column(self):
|
|
attname, _ = super().get_attname_column()
|
|
return attname, None
|
|
|
|
|
|
class Profile(models.Model):
|
|
name = models.CharField(max_length=200)
|
|
salary = models.FloatField(default=1000.0)
|
|
non_concrete = NonConcreteField()
|
|
|
|
|
|
class ProxyEmployee(Employee):
|
|
class Meta:
|
|
proxy = True
|