Made referencing containers optional on pages. Fixes a bug.

[philo.git] / models.py

diff --git a/models.py b/models.py
index 878d3d4..9210e1b 100644 (file)
--- 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
@@ -99,12 +96,18 @@ class Entity(models.Model):
        
        class Meta:
                abstract = True
-
+       
 
 class Collection(models.Model):
        name = models.CharField(max_length=255)
        description = models.TextField(blank=True, null=True)
-
+       
+       def get_count(self):
+               return self.members.count()
+       get_count.short_description = 'Members'
+       
+       def __unicode__(self):
+               return self.name
 
 class CollectionMemberManager(models.Manager):
        use_for_related_fields = True
@@ -120,6 +123,9 @@ 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 +163,7 @@ 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 +173,6 @@ 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 +183,6 @@ 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):
@@ -231,10 +213,6 @@ 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__)
        
        def get_path(self, pathsep='/', field='slug'):
                path = getattr(self.instance, field, '?')
@@ -312,12 +290,15 @@ 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):
        name = models.CharField(max_length=255)
        documentation = models.TextField(null=True, blank=True)
-       mimetype = models.CharField(max_length=255, null=True, blank=True, help_text='Default: %s' % settings.DEFAULT_CONTENT_TYPE)
+       mimetype = models.CharField(max_length=255, null=True, blank=True, help_text='Default: %s' % settings.DEFAULT_CONTENT_TYPE, default=settings.DEFAULT_CONTENT_TYPE)
        code = models.TextField(verbose_name='django template code')
        
        @property
@@ -387,7 +368,7 @@ 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)