X-Git-Url: http://git.ithinksw.org/philo.git/blobdiff_plain/21abe382ad825e1383dfb1299efc1201ddd1e1c0..946f2dc5728e293dd7fc55bac7a8cf8d3dcc5722:/philo/models/base.py

diff --git a/philo/models/base.py b/philo/models/base.py
index 0218261..f9c22f9 100644
--- a/philo/models/base.py
+++ b/philo/models/base.py
@@ -1,7 +1,7 @@
 from django import forms
 from django.contrib.contenttypes.models import ContentType
 from django.contrib.contenttypes import generic
-from django.core.exceptions import ObjectDoesNotExist
+from django.core.exceptions import ValidationError
 from django.core.validators import RegexValidator
 from django.db import models
 from django.utils import simplejson as json
@@ -522,6 +522,15 @@ class SlugTreeEntity(TreeEntity):
 		return super(SlugTreeEntity, self).get_path(root, pathsep, field)
 	path = property(get_path)
 	
+	def clean(self):
+		if self.parent is None:
+			try:
+				self._default_manager.exclude(pk=self.pk).get(slug=self.slug, parent__isnull=True)
+			except self.DoesNotExist:
+				pass
+			else:
+				raise ValidationError(self.unique_error_message(self.__class__, ('parent', 'slug')))
+	
 	class Meta:
 		unique_together = ('parent', 'slug')
 		abstract = True
\ No newline at end of file