models.py

from django.conf import settings
from django.db import models
from django.utils.translation import ugettext_lazy as _
from cms.models import CMSPlugin
from publisher import Publisher

if 'reversion' in settings.INSTALLED_APPS:
    import reversion

class Store(CMSPlugin):
    """Simple store example - for testing admin inlines
    """
    name = models.CharField(_('name'), max_length=32)
    
    class Meta:
        verbose_name=_('Store')
        verbose_name_plural=_('Store')
        
    __unicode__ = lambda self: self.name


class StoreItem(Publisher):
    """Store item examle
    """
    store = models.ForeignKey(Store, verbose_name=_('store item'))
    name = models.CharField(_('name'), max_length=32)
    price = models.DecimalField(_('price'), max_digits=10, decimal_places=4)
    
    class Meta:
        verbose_name=_('Store item')
        verbose_name_plural=_('Store items')
        
    __unicode__ = lambda self: self.name


if 'reversion' in settings.INSTALLED_APPS:
    try:
        # seems there is some issue with reversion, probably this get imported
        # more than once, so avoid multiple registrations
        reversion.register(Store, follow=["cmsplugin_ptr", "storeitem_set"])
        reversion.register(StoreItem)
    except:
        pass