How to relate FacebookUser to FacebookEvent.

[kitsunde]

An event can have a user, application or page as an owner. So say we have:

class FacebookEvent(models.Model):
    #@todo Venue
    id = models.BigIntegerField(primary_key=True)
    content_type = models.ForeignKey(ContentType, blank=True, null=True)
    object_id = models.PositiveIntegerField(blank=True, null=True)
    owner = generic.GenericForeignKey('content_type', 'object_id')

• We will run into an issue because while FacebookPage and FacebookApplication only have one object, FacebookUser will have several.
• If we create multiple FacebookEvent, we'll have duplicate primary keys.
• If we have an application with a facebook user that hasn't given read rights to events, presumably we'll see things we shouldn't.
• We could swap owner to a PositiveIntegerField, but then if we want to get the owner as an object we would need to query pages, application and user.
• Possibly each FacebookEvent should relate to a facebook application, and then it could have a single owner.
• If we find that we must relate FacbeookEvent to a single application (seems likely) wouldn't that also imply we should sope everything on the FacebookApplication, like FacebookPage as presumably some applications don't have manage_pages set, but we could decorate FacebookPage with information that is derives from insights, manage pages or things like that.