X-Git-Url: http://git.ithinksw.org/philo.git/blobdiff_plain/4d6de7cca540e95b4355cfbc14d068ee2e5b577b..8c48dda3b4c5cf0ac6c2d404ae29d8ef315b4f7f:/models.py

diff --git a/models.py b/models.py
index 878d3d4..f866ee6 100644
--- a/models.py
+++ b/models.py
@@ -5,18 +5,15 @@ from django.contrib.contenttypes import generic
 from django.contrib.contenttypes.models import ContentType
 from django.db import models
 from django.contrib.sites.models import Site
-from utils import fattr
+from philo.utils import fattr
 from django.template import add_to_builtins as register_templatetags
 from django.template import Template as DjangoTemplate
 from django.template import TemplateDoesNotExist
 from django.template import Context, RequestContext
-from django.core.exceptions import ObjectDoesNotExist, ValidationError
-try:
-	import json
-except ImportError:
-	import simplejson as json
+from django.core.exceptions import ObjectDoesNotExist
+from django.utils import simplejson as json
 from UserDict import DictMixin
-from templatetags.containers import ContainerNode
+from philo.templatetags.containers import ContainerNode
 from django.template.loader_tags import ExtendsNode, ConstantIncludeNode, IncludeNode
 from django.template.loader import get_template
 from django.http import Http404, HttpResponse, HttpResponseServerError, HttpResponseRedirect
@@ -104,6 +101,13 @@ class Entity(models.Model):
 class Collection(models.Model):
 	name = models.CharField(max_length=255)
 	description = models.TextField(blank=True, null=True)
+	
+	@fattr(short_description='Members')
+	def get_count(self):
+		return self.members.count()
+	
+	def __unicode__(self):
+		return self.name
 
 
 class CollectionMemberManager(models.Manager):
@@ -120,6 +124,9 @@ class CollectionMember(models.Model):
 	member_content_type = models.ForeignKey(ContentType, verbose_name='Member type')
 	member_object_id = models.PositiveIntegerField(verbose_name='Member ID')
 	member = generic.GenericForeignKey('member_content_type', 'member_object_id')
+	
+	def __unicode__(self):
+		return u'%s - %s' % (self.collection, self.member)
 
 
 class TreeManager(models.Manager):
@@ -157,6 +164,7 @@ class TreeManager(models.Manager):
 				return (obj, remainder)
 		raise self.model.DoesNotExist('%s matching query does not exist.' % self.model._meta.object_name)
 
+
 class TreeModel(models.Model):
 	objects = TreeManager()
 	parent = models.ForeignKey('self', related_name='children', null=True, blank=True)
@@ -166,7 +174,6 @@ class TreeModel(models.Model):
 		path = getattr(self, field, '?')
 		parent = self.parent
 		while parent:
-			self.validate_parent(parent)
 			path = getattr(parent, field, '?') + pathsep + path
 			parent = parent.parent
 		return path
@@ -177,30 +184,6 @@ class TreeModel(models.Model):
 	
 	class Meta:
 		abstract = True
-		
-	def validate_parents(self, parent=None):
-		if parent == None:
-			parent = self.parent
-		
-		while parent:
-			try:
-				self.validate_parent(parent)
-				parent = parent.parent
-			except ObjectDoesNotExist:
-				return # because it likely means the child doesn't exist 
-			
-	def validate_parent(self, parent):
-		#Why doesn't this stop the Admin site from saving a model with itself as parent?
-		if self == parent:
-			raise ValidationError("A %s can't be its own parent." % self.__class__.__name__)
-	
-	def clean(self):
-		super(TreeModel, self).clean()
-		self.validate_parents()
-	
-	def save(self, *args, **kwargs):
-		self.clean()
-		super(TreeModel, self).save(*args, **kwargs)
 
 
 class TreeEntity(TreeModel, Entity):
@@ -230,11 +213,10 @@ class InheritableTreeEntity(TreeEntity):
 	
 	@property
 	def instance(self):
-		return self.instance_type.get_object_for_this_type(id=self.id)
-		
-	def validate_parent(self, parent):
-		if self.instance == parent.instance:
-			raise ValidationError("A %s can't be its own parent." % self.__class__.__name__)
+		try:
+			return self.instance_type.get_object_for_this_type(id=self.id)
+		except:
+			return None
 	
 	def get_path(self, pathsep='/', field='slug'):
 		path = getattr(self.instance, field, '?')
@@ -268,7 +250,7 @@ class Node(InheritableTreeEntity):
 		return HttpResponseServerError()
 		
 	class Meta:
-		unique_together=(('parent', 'slug',),)
+		unique_together = (('parent', 'slug'),)
 
 
 class MultiNode(Node):
@@ -312,6 +294,9 @@ class File(Node):
 		response = HttpResponse(wrapper, content_type=self.mimetype)
 		response['Content-Length'] = self.file.size
 		return response
+	
+	def __unicode__(self):
+		return self.file
 
 
 class Template(TreeModel):
@@ -387,7 +372,7 @@ class Template(TreeModel):
 
 class Page(Node):
 	"""
-	Represents an HTML page. The page will have a number of related Contentlets depending on the template selected - but these will appear only after the page has been saved with that template.
+	Represents a page - something which is rendered according to a template. The page will have a number of related Contentlets depending on the template selected - but these will appear only after the page has been saved with that template.
 	"""
 	template = models.ForeignKey(Template, related_name='pages')
 	title = models.CharField(max_length=255)
@@ -408,14 +393,20 @@ class Contentlet(models.Model):
 	name = models.CharField(max_length=255)
 	content = models.TextField()
 	dynamic = models.BooleanField(default=False)
+	
+	def __unicode__(self):
+		return self.name
 
 
 class ContentReference(models.Model):
 	page = models.ForeignKey(Page, related_name='contentreferences')
 	name = models.CharField(max_length=255)
 	content_type = models.ForeignKey(ContentType, verbose_name='Content type')
-	content_id = models.PositiveIntegerField(verbose_name='Content ID')
+	content_id = models.PositiveIntegerField(verbose_name='Content ID', blank=True, null=True)
 	content = generic.GenericForeignKey('content_type', 'content_id')
+	
+	def __unicode__(self):
+		return self.name
 
 
 register_templatetags('philo.templatetags.containers')