X-Git-Url: http://git.ithinksw.org/philo.git/blobdiff_plain/bae6b1cbc5eb00d2273c45b55ea0950949fce0a9..aca27b0d4429d193b539f993eb629d28efd2157b:/models/base.py

diff --git a/models/base.py b/models/base.py
index 3482a1a..37710b8 100644
--- a/models/base.py
+++ b/models/base.py
@@ -9,15 +9,18 @@ from UserDict import DictMixin
 
 class Tag(models.Model):
 	name = models.CharField(max_length=250)
-	slug = models.SlugField()
+	slug = models.SlugField(unique=True)
 	
 	def __unicode__(self):
 		return self.name
+	
+	class Meta:
+		app_label = 'philo'
 
 
 class Titled(models.Model):
 	title = models.CharField(max_length=255)
-	slug = models.SlugField()
+	slug = models.SlugField(max_length=255)
 	
 	def __unicode__(self):
 		return self.title
@@ -111,9 +114,65 @@ class Entity(models.Model):
 	def relationships(self):
 		return QuerySetMapper(self.relationship_set)
 	
+	@property
+	def _added_attribute_registry(self):
+		if not hasattr(self, '_real_added_attribute_registry'):
+			self._real_added_attribute_registry = {}
+		return self._real_added_attribute_registry
+	
+	@property
+	def _removed_attribute_registry(self):
+		if not hasattr(self, '_real_removed_attribute_registry'):
+			self._real_removed_attribute_registry = []
+		return self._real_removed_attribute_registry
+	
+	@property
+	def _added_relationship_registry(self):
+		if not hasattr(self, '_real_added_relationship_registry'):
+			self._real_added_relationship_registry = {}
+		return self._real_added_relationship_registry
+	
+	@property
+	def _removed_relationship_registry(self):
+		if not hasattr(self, '_real_removed_relationship_registry'):
+			self._real_removed_relationship_registry = []
+		return self._real_removed_relationship_registry
+	
+	def save(self, *args, **kwargs):
+		super(Entity, self).save(*args, **kwargs)
+		
+		for key in self._removed_attribute_registry:
+			self.attribute_set.filter(key__exact=key).delete()
+		del self._removed_attribute_registry[:]
+		
+		for key, value in self._added_attribute_registry.items():
+			try:
+				attribute = self.attribute_set.get(key__exact=key)
+			except Attribute.DoesNotExist:
+				attribute = Attribute()
+				attribute.entity = self
+				attribute.key = key
+			attribute.value = value
+			attribute.save()
+		self._added_attribute_registry.clear()
+		
+		for key in self._removed_relationship_registry:
+			self.relationship_set.filter(key__exact=key).delete()
+		del self._removed_relationship_registry[:]
+		
+		for key, value in self._added_relationship_registry.items():
+			try:
+				relationship = self.relationship_set.get(key__exact=key)
+			except Relationship.DoesNotExist:
+				relationship = Relationship()
+				relationship.entity = self
+				relationship.key = key
+			relationship.value = value
+			relationship.save()
+		self._added_relationship_registry.clear()
+	
 	class Meta:
 		abstract = True
-		app_label = 'philo'
 
 
 class TreeManager(models.Manager):
@@ -157,13 +216,29 @@ class TreeModel(models.Model):
 	parent = models.ForeignKey('self', related_name='children', null=True, blank=True)
 	slug = models.SlugField()
 	
-	def get_path(self, pathsep='/', field='slug'):
-		path = getattr(self, field, '?')
-		parent = self.parent
+	def has_ancestor(self, ancestor):
+		parent = self
 		while parent:
-			path = getattr(parent, field, '?') + pathsep + path
+			if parent == ancestor:
+				return True
 			parent = parent.parent
-		return path
+		return False
+	
+	def get_path(self, root=None, pathsep='/', field='slug'):
+		if root is not None and self.has_ancestor(root):
+			path = ''
+			parent = self
+			while parent and parent != root:
+				path = getattr(parent, field, '?') + pathsep + path
+				parent = parent.parent
+			return path
+		else:
+			path = getattr(self, field, '?')
+			parent = self.parent
+			while parent and parent != root:
+				path = getattr(parent, field, '?') + pathsep + path
+				parent = parent.parent
+			return path
 	path = property(get_path)
 	
 	def __unicode__(self):
@@ -172,7 +247,6 @@ class TreeModel(models.Model):
 	class Meta:
 		unique_together = (('parent', 'slug'),)
 		abstract = True
-		app_label = 'philo'
 
 
 class TreeEntity(TreeModel, Entity):
@@ -189,5 +263,4 @@ class TreeEntity(TreeModel, Entity):
 		return super(TreeEntity, self).relationships
 	
 	class Meta:
-		abstract = True
-		app_label = 'philo'
\ No newline at end of file
+		abstract = True
\ No newline at end of file