mirror of
https://github.com/django/django.git
synced 2024-12-23 09:36:06 +00:00
44 lines
992 B
Python
44 lines
992 B
Python
from django.db import models
|
|
from django.utils.encoding import python_2_unicode_compatible
|
|
|
|
|
|
@python_2_unicode_compatible
|
|
class Part(models.Model):
|
|
name = models.CharField(max_length=20)
|
|
|
|
class Meta:
|
|
ordering = ('name',)
|
|
|
|
def __str__(self):
|
|
return self.name
|
|
|
|
|
|
@python_2_unicode_compatible
|
|
class Car(models.Model):
|
|
name = models.CharField(max_length=20)
|
|
default_parts = models.ManyToManyField(Part)
|
|
optional_parts = models.ManyToManyField(Part, related_name='cars_optional')
|
|
|
|
class Meta:
|
|
ordering = ('name',)
|
|
|
|
def __str__(self):
|
|
return self.name
|
|
|
|
|
|
class SportsCar(Car):
|
|
price = models.IntegerField()
|
|
|
|
|
|
@python_2_unicode_compatible
|
|
class Person(models.Model):
|
|
name = models.CharField(max_length=20)
|
|
fans = models.ManyToManyField('self', related_name='idols', symmetrical=False)
|
|
friends = models.ManyToManyField('self')
|
|
|
|
class Meta:
|
|
ordering = ('name',)
|
|
|
|
def __str__(self):
|
|
return self.name
|