X-Git-Url: http://git.ithinksw.org/philo.git/blobdiff_plain/7bce2277e95107a35ea6bd47d692bc0f7ea71819..e9e849a722cfb91df4e3b15e206eccbba76c772e:/models/base.py

diff --git a/models/base.py b/models/base.py
index 81e557f..33c994c 100644
--- a/models/base.py
+++ b/models/base.py
@@ -3,8 +3,10 @@ from django.contrib.contenttypes.models import ContentType
 from django.contrib.contenttypes import generic
 from django.utils import simplejson as json
 from django.core.exceptions import ObjectDoesNotExist
+from philo.exceptions import AncestorDoesNotExist
 from philo.utils import ContentTypeRegistryLimiter
 from philo.signals import entity_class_prepared
+from philo.validators import json_validator
 from UserDict import DictMixin
 
 
@@ -35,7 +37,7 @@ class Attribute(models.Model):
 	entity_object_id = models.PositiveIntegerField(verbose_name='Entity ID')
 	entity = generic.GenericForeignKey('entity_content_type', 'entity_object_id')
 	key = models.CharField(max_length=255)
-	json_value = models.TextField(verbose_name='Value (JSON)', help_text='This value must be valid JSON.')
+	json_value = models.TextField(verbose_name='Value (JSON)', help_text='This value must be valid JSON.', validators=[json_validator])
 	
 	def get_value(self):
 		return json.loads(self.json_value)
@@ -53,6 +55,7 @@ class Attribute(models.Model):
 	
 	class Meta:
 		app_label = 'philo'
+		unique_together = ('key', 'entity_content_type', 'entity_object_id')
 
 
 value_content_type_limiter = ContentTypeRegistryLimiter()
@@ -81,6 +84,7 @@ class Relationship(models.Model):
 	
 	class Meta:
 		app_label = 'philo'
+		unique_together = ('key', 'entity_content_type', 'entity_object_id')
 
 
 class QuerySetMapper(object, DictMixin):
@@ -238,7 +242,7 @@ class TreeManager(models.Manager):
 class TreeModel(models.Model):
 	objects = TreeManager()
 	parent = models.ForeignKey('self', related_name='children', null=True, blank=True)
-	slug = models.SlugField()
+	slug = models.SlugField(max_length=255)
 	
 	def has_ancestor(self, ancestor):
 		parent = self
@@ -249,7 +253,9 @@ class TreeModel(models.Model):
 		return False
 	
 	def get_path(self, root=None, pathsep='/', field='slug'):
-		if root is not None and self.has_ancestor(root):
+		if root is not None:
+			if not self.has_ancestor(root):
+				raise AncestorDoesNotExist(root)
 			path = ''
 			parent = self
 			while parent and parent != root:
@@ -273,7 +279,7 @@ class TreeModel(models.Model):
 		abstract = True
 
 
-class TreeEntity(TreeModel, Entity):
+class TreeEntity(Entity, TreeModel):
 	@property
 	def attributes(self):
 		if self.parent: