I have the following object structure:
class Car(models.Model):
name = models.CharField(max_length=16)
class Person(models.Model):
name = models.CharField(max_length=32)
cars = models.ManyToManyField(Car, through='Relationship')
parent = models.ForeignKey('self', null=True, blank=True,
related_name='childrens')
class Relationship(models.Model):
car = models.ForeignKey(Car)
person = models.ForeignKey(Person)
love = models.BooleanField(_('love status'), default=True, db_index=True)
The logic is of the models is:
- A *Person* may be have another *Person* (children, for
instance-ForeignKey on 'self').
- A *cars* (related manager) should return a cars of the current related
person + a cars, that his father (if exists) have (inheritance).
- A *children* can't *add* to self a *car*, that his father already have
(inheritance).
- A *relationship_set* manager should work by the same logic of *cars*
manager
(if a father loves a car, then a children should love it too.
This logic looks like *inheritance*. I can't implement this logic by
Multi-table
inheritance
<https://docs.djangoproject.com/en/dev/topics/db/models/#model-inheritance>,
because a*children* may have other *children*. Maybe there is some ideas
like *multi-record inheritance*?
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