django-assetkit/example_site/main/medialibrary/models.py

# -*- coding: utf-8 -*-
from __future__ import unicode_literals

import uuid
from django.db import models
from django.utils.encoding import python_2_unicode_compatible
from django.utils.translation import ugettext_lazy as _

from ..medialibrary.fields import MediaAssetField


class UUIDMixin(models.Model):
    uuid_hex = models.CharField(max_length=32, null=False, editable=False)

    class Meta:
        abstract = True

    # TODO Make auto-initializing UUID-field
    def get_uuid(self):
        if not self.uuid_hex:
            self.uuid_hex = uuid.uuid4().hex
        return str(uuid.UUID(self.uuid_hex))


@python_2_unicode_compatible
class MediaAsset(UUIDMixin, models.Model):
    original_file = MediaAssetField(_("original file"))
    name = models.CharField(_('name'), max_length=50)
    simple_file = models.FileField(null=True, blank=True)

    def __str__(self):
        return self.name