django/tests/modeltests/m2m_signals/models.py

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from django.db import models
class Part(models.Model):
name = models.CharField(max_length=20)
class Meta:
ordering = ('name',)
def __unicode__(self):
return self.name
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 __unicode__(self):
return self.name
class SportsCar(Car):
price = models.IntegerField()
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 __unicode__(self):
return self.name