Hi Tim!
On Sat, 5 Mar 2011 06:05:51 -0800 (PST), Tim <jtim.arn...@gmail.com> wrote:
> For me that looks a little complex. The 'sequence' doesn't really
> belong to the Chapter or the Book, but to their relationship. A
> Chapter may have one sequence number when part of Book A, and another
> for Book B.
That's a classic example for a many-to-many relationship with additional
data.
class Book(models.Model):
(...)
class Chapter(models.Model):
(...)
book = models.ManyToManyField(through="BookChapter")
class BookChapter(models.Model):
(...)
sequence = models.IntegerField
You can find more info about the `through` parameter at:
http://docs.djangoproject.com/en/dev/ref/models/fields/#django.db.models.ManyToManyField.through
Hope that helps,
Michael
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