models.py

import uuid

from django.db import models
from django_extensions.db.fields.json import JSONField
from djorm_pgarray.fields import TextArrayField
from django.contrib.auth.models import User

# you could make a monkuser class and use the standard user model to only handle auth
# https://docs.djangoproject.com/en/dev/topics/auth/customizing/#extending-the-existing-user-model

class BaseObject(models.Model):
    name = models.CharField(max_length=80)
    addTime = models.DateTimeField()
    modTime = models.DateTimeField()
    lastModifiedBy = models.OneToOneField(User, null=True) # s/b MonkUser?
    uuid = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)

    class Meta:
        abstract = True

class MonkUser(BaseObject):
    # todo: user = models.ForeignKey(User)
    email = models.EmailField(unique=True)

    class Meta:
        ordering = ('name',)

    def __unicode__(self):
        return '<%s> %s' % (self.name, self.email)

class OwnedObject(BaseObject):
    # Parent (abstract) object for the Notes and Entries.
    owner = models.ForeignKey(MonkUser, related_name='%(class)s_set', null=True, help_text="Reference to Object's Owner")

    class Meta:
        abstract = True

class Site(OwnedObject):
    borders = JSONField()
    skybox = models.OneToOneField(SkyBox)
    sprites = TextArrayField() # or JSON or toMany?
    tour = models.OneToOneField(Tour)

class Sprite(OwnedObject):
    geometry = models.URLField()
    height = models.FloatField()
    texture = models.URLField()
    type = models.CharField(max_length=80)
    # Many to One use ForeignKey
    assets = JSONField() # or models.ForeignKey(Asset)
    label = JSONField() # models.ForeignKey(Label) # one to one
    levels = JSONField() # models.ForeignKey(Levels) # to many
    location = models.ForeignKey(Location)

class Asset(OwnedObject):
    path = models.URLField()
    type = models.CharField(max_length=80)
    votes = models.ForeignKey(Vote)

class Location(OwnedObject):
    latitude = models.DecimalField(max_digits=12, decimal_places=9)
    longitude = models.DecimalField(max_digits=12, decimal_places=9)

class Vote(OwnedObject):
    weight = models.IntegerField()
    asset = models.OneToOneField(Asset)

class SkyBox(OwnedObject):
    asset = models.OneToOneField(Asset)

class Tour():
    isPublic = models.BooleanField(default=True, help_text="Boolean flag indicating if this Tour is public or is a private (paid) tour.")
    sharedWith = models.ManyToManyField(MonkUser, related_name='shared_tours', blank=True, null=True)