def save(self, force_insert=False, force_update=False):
     if self.link:
         key = base62.to_decimal(self.link)
         try:
             ShortURL.objects.get(pk=key)
         except ShortURL.DoesNotExist:
             raise ValueError(_('Invalid value of link'))
     models.Model.save(self, force_insert, force_update)
 def save(self, force_insert=False, force_update=False):
     if self.link:
         key = base62.to_decimal(self.link)
         try:
             ShortURL.objects.get(pk=key)
         except ShortURL.DoesNotExist:
             raise ValueError(_('Invalid value of link'))
     models.Model.save(self, force_insert, force_update)
 def get(self, request, *args, **kwargs):
     """
     View which gets the link for the given base62_id value
     and redirects to it.
     """
     base62_id = kwargs['base62_id']
     key = base62.to_decimal(base62_id)
     link = get_object_or_404(ShortURL, pk = key)
     link.usage_count += 1
     link.save()
     return HttpResponsePermanentRedirect(link.url)