Merge branch 'release' into develop

[philo.git] / philo / models / nodes.py

diff --git a/philo/models/nodes.py b/philo/models/nodes.py
index a9b77fb..ab3bca5 100644 (file)
--- a/philo/models/nodes.py
+++ b/philo/models/nodes.py
@@ -8,26 +8,29 @@ from django.core.servers.basehttp import FileWrapper
 from django.core.urlresolvers import resolve, clear_url_caches, reverse, NoReverseMatch
 from django.db import models
 from django.http import HttpResponse, HttpResponseServerError, HttpResponseRedirect, Http404
-from django.template import add_to_builtins as register_templatetags
 from django.utils.encoding import smart_str
 
 from philo.exceptions import MIDDLEWARE_NOT_CONFIGURED, ViewCanNotProvideSubpath, ViewDoesNotProvideSubpaths
-from philo.models.base import TreeEntity, Entity, QuerySetMapper, register_value_model
+from philo.models.base import SlugTreeEntity, Entity, register_value_model
 from philo.models.fields import JSONField
 from philo.utils import ContentTypeSubclassLimiter
+from philo.utils.entities import LazyPassthroughAttributeMapper
 from philo.signals import view_about_to_render, view_finished_rendering
 
 
+__all__ = ('Node', 'View', 'MultiView', 'Redirect', 'File')
+
+
 _view_content_type_limiter = ContentTypeSubclassLimiter(None)
 
 
-class Node(TreeEntity):
+class Node(SlugTreeEntity):
        """
        :class:`Node`\ s are the basic building blocks of a website using Philo. They define the URL hierarchy and connect each URL to a :class:`View` subclass instance which is used to generate an HttpResponse.
        
        """
-       view_content_type = models.ForeignKey(ContentType, related_name='node_view_set', limit_choices_to=_view_content_type_limiter)
-       view_object_id = models.PositiveIntegerField()
+       view_content_type = models.ForeignKey(ContentType, related_name='node_view_set', limit_choices_to=_view_content_type_limiter, blank=True, null=True)
+       view_object_id = models.PositiveIntegerField(blank=True, null=True)
        #: :class:`GenericForeignKey` to a non-abstract subclass of :class:`View`
        view = generic.GenericForeignKey('view_content_type', 'view_object_id')
        
@@ -39,11 +42,15 @@ class Node(TreeEntity):
                return False
        
        def handles_subpath(self, subpath):
-               return self.view.handles_subpath(subpath)
+               if self.view:
+                       return self.view.handles_subpath(subpath)
+               return False
        
        def render_to_response(self, request, extra_context=None):
                """This is a shortcut method for :meth:`View.render_to_response`"""
-               return self.view.render_to_response(request, extra_context)
+               if self.view:
+                       return self.view.render_to_response(request, extra_context)
+               raise Http404
        
        def get_absolute_url(self, request=None, with_domain=False, secure=False):
                """
@@ -101,7 +108,7 @@ class Node(TreeEntity):
                
                return '%s%s%s%s' % (domain, root_url, path, subpath)
        
-       class Meta:
+       class Meta(SlugTreeEntity.Meta):
                app_label = 'philo'
 
 
@@ -170,12 +177,12 @@ class View(Entity):
                """
                raise NotImplementedError("View subclasses must implement get_reverse_params to support subpaths.")
        
-       def attributes_with_node(self, node):
+       def attributes_with_node(self, node, mapper=LazyPassthroughAttributeMapper):
                """
-               Returns a :class:`~philo.models.base.QuerySetMapper` using the :class:`Node`'s attributes as a passthrough.
+               Returns a :class:`LazyPassthroughAttributeMapper` which can be used to directly retrieve the values of :class:`Attribute`\ s related to the :class:`View`, falling back on the :class:`Attribute`\ s of the passed-in :class:`Node` and its ancestors.
                
                """
-               return QuerySetMapper(self.attribute_set, passthrough=node.attributes)
+               return mapper((self, node))
        
        def render_to_response(self, request, extra_context=None):
                """
@@ -232,7 +239,7 @@ class MultiView(View):
                
                """
                clear_url_caches()
-               subpath = request.node.subpath
+               subpath = request.node._subpath
                view, args, kwargs = resolve(subpath, urlconf=self)
                view_args = getargspec(view)
                if extra_context is not None and ('extra_context' in view_args[0] or view_args[2] is not None):
@@ -288,7 +295,7 @@ class MultiView(View):
 
 class TargetURLModel(models.Model):
        """An abstract parent class for models which deal in targeting a url."""
-       #: An optional :class:`ForeignKey` to a :class:`Node`. If provided, that node will be used as the basis for the redirect.
+       #: An optional :class:`ForeignKey` to a :class:`.Node`. If provided, that node will be used as the basis for the redirect.
        target_node = models.ForeignKey(Node, blank=True, null=True, related_name="%(app_label)s_%(class)s_related")
        #: A :class:`CharField` which may contain an absolute or relative URL, or the name of a node's subpath.
        url_or_subpath = models.CharField(max_length=200, blank=True, help_text="Point to this url or, if a node is defined and accepts subpaths, this subpath of the node.")
@@ -386,5 +393,4 @@ class File(View):
                return self.file.name
 
 
-register_templatetags('philo.templatetags.nodes')
 register_value_model(Node)
\ No newline at end of file