Converting example from TG to Django

[GinTon]

I'm trying to implement TG example model as learning in Django.
http://www.turbogears.org/docs/TurboTunes/

http://sqlobject.org/SQLObject.html#relationships-between-classes-tables
To create relationships between tables are used:

ForeignKey: One-to-Many
MultipleJoin: One-to-Many (with back references)
RelatedJoin: Many-to-Many
SingleJoin: One-to-One

TG model:

class Genre(SQLObject):
    name = StringCol(length=200)
    artists = RelatedJoin('Artist')

class Artist(SQLObject):
    name = StringCol(length=200)
    genres = RelatedJoin('Genre')
    albums = MultipleJoin('Album')

class Album(SQLObject):
    name = StringCol(length=200)
    artist = ForeignKey('Artist')
    songs = MultipleJoin('Song')

class Song(SQLObject):
    name = StringCol(length=200)
    album = ForeignKey('Album')

Django model _I think that it would be so_:

class Genre(models.Model):
    name = models.CharField( maxlength=200, unique=True )
    artists = models.ManyToManyField( 'Artist' )

    class Admin: pass
    def __str__(self):
        return self.name

class Artist(models.Model):
    name = models.CharField( maxlength=200, unique=True, db_index=True
)
    genres = models.ManyToManyField( Genre )
    albums = models.ForeignKey( 'Album' )

    class Admin: pass
    def __str__(self):
        return self.name

class Album(models.Model):
    name = models.CharField( maxlength=200, db_index=True )
    artist = models.ForeignKey( Artist )
    songs = models.ForeignKey( 'Song' )

    class Admin: pass
    def __str__(self):
        return self.name

class Song(models.Model):
    name = models.CharField( maxlength=200, db_index=True )
    album = models.ForeignKey( Album )

    class Admin: pass
    def __str__(self):
        return self.name

But, how create back references in One-to-Many relationship
_models.ForeignKey_?


--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups 
"Django users" group.
To post to this group, send email to django-users@googlegroups.com
To unsubscribe from this group, send email to [EMAIL PROTECTED]
For more options, visit this group at 
http://groups.google.com/group/django-users
-~----------~----~----~----~------~----~------~--~---