python/lib/django_1_4/django/contrib/flatpages/forms.py

   1 from django import forms
   2 from django.conf import settings
   3 from django.contrib.flatpages.models import FlatPage
   4 from django.utils.translation import ugettext, ugettext_lazy as _
   5
   6 class FlatpageForm(forms.ModelForm):
   7     url = forms.RegexField(label=_("URL"), max_length=100, regex=r'^[-\w/\.~]+$',
   8         help_text = _("Example: '/about/contact/'. Make sure to have leading"
   9                       " and trailing slashes."),
  10         error_message = _("This value must contain only letters, numbers,"
  11                           " dots, underscores, dashes, slashes or tildes."))
  12
  13     class Meta:
  14         model = FlatPage
  15
  16     def clean_url(self):
  17         url = self.cleaned_data['url']
  18         if not url.startswith('/'):
  19             raise forms.ValidationError(ugettext("URL is missing a leading slash."))
  20         if (settings.APPEND_SLASH and
  21             'django.middleware.common.CommonMiddleware' in settings.MIDDLEWARE_CLASSES and
  22             not url.endswith('/')):
  23             raise forms.ValidationError(ugettext("URL is missing a trailing slash."))
  24         return url
  25
  26     def clean(self):
  27         url = self.cleaned_data.get('url', None)
  28         sites = self.cleaned_data.get('sites', None)
  29
  30         same_url = FlatPage.objects.filter(url=url)
  31         if self.instance.pk:
  32             same_url = same_url.exclude(pk=self.instance.pk)
  33
  34         if same_url.filter(sites__in=sites).exists():
  35             for site in sites:
  36                 if same_url.filter(sites=site).exists():
  37                     raise forms.ValidationError(
  38                         _('Flatpage with url %(url)s already exists for site %(site)s' %
  39                           {'url': url, 'site': site}))
  40
  41         return super(FlatpageForm, self).clean()