django-tos/tos/models.py
2012-07-04 12:55:28 -07:00

72 lines
2.3 KiB
Python

from django.core.exceptions import ValidationError
from django.db import models
from django.contrib.auth.models import User
from django.utils.translation import ugettext_lazy as _
class NoActiveTermsOfService(ValidationError):
pass
class BaseModel(models.Model):
created = models.DateTimeField(auto_now_add=True, editable=False)
modified = models.DateTimeField(auto_now=True, editable=False)
class Meta:
abstract = True
class TermsOfServiceManager(models.Manager):
def get_current_tos(self):
try:
return self.get(active=True)
except self.model.DoesNotExist:
raise NoActiveTermsOfService(u'Please create an active Terms-of-Service')
class TermsOfService(BaseModel):
active = models.BooleanField(verbose_name=_('active'),
help_text=_(u'Only one terms of service is allowed to be active'))
content = models.TextField(verbose_name=_('content'), blank=True)
objects = TermsOfServiceManager()
class Meta:
get_latest_by = 'created'
ordering = ('-created',)
verbose_name = _('Terms of Service')
verbose_name_plural = _('Terms of Service')
def __unicode__(self):
active = 'inactive'
if self.active:
active = 'active'
return '%s: %s' % (self.created, active)
def save(self, *args, **kwargs):
""" Ensure we're being saved properly """
if self.active:
TermsOfService.objects.exclude(id=self.id).update(active=False)
else:
if not TermsOfService.objects\
.exclude(id=self.id)\
.filter(active=True):
raise NoActiveTermsOfService(u'One of the terms of service must be marked active')
super(TermsOfService, self).save(*args, **kwargs)
class UserAgreement(BaseModel):
terms_of_service = models.ForeignKey(TermsOfService, related_name='terms')
user = models.ForeignKey(User, related_name='user_agreement')
def __unicode__(self):
return u'%s agreed to TOS: %s' % (self.user.username,
unicode(self.terms_of_service))
def has_user_agreed_latest_tos(user):
if UserAgreement.objects.filter(terms_of_service=TermsOfService.objects.get_current_tos(), user=user):
return True
return False