Merge git://github.com/derega/philo into develop. Merged derega's nav example changes...

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

diff --git a/philo/models/nodes.py b/philo/models/nodes.py
index 93f772a..7371a1d 100644 (file)
--- a/philo/models/nodes.py
+++ b/philo/models/nodes.py
@@ -2,9 +2,11 @@ from inspect import getargspec
 import mimetypes
 from os.path import basename
 
 import mimetypes
 from os.path import basename
 

+from django.conf import settings

 from django.contrib.contenttypes import generic
 from django.contrib.contenttypes.models import ContentType
 from django.contrib.sites.models import Site, RequestSite
 from django.contrib.contenttypes import generic
 from django.contrib.contenttypes.models import ContentType
 from django.contrib.sites.models import Site, RequestSite

+from django.core.cache import cache

 from django.core.exceptions import ValidationError
 from django.core.servers.basehttp import FileWrapper
 from django.core.urlresolvers import resolve, clear_url_caches, reverse, NoReverseMatch
 from django.core.exceptions import ValidationError
 from django.core.servers.basehttp import FileWrapper
 from django.core.urlresolvers import resolve, clear_url_caches, reverse, NoReverseMatch


@@ -24,6 +26,7 @@ __all__ = ('Node', 'View', 'MultiView', 'Redirect', 'File')
 
 
 _view_content_type_limiter = ContentTypeSubclassLimiter(None)
 
 
 _view_content_type_limiter = ContentTypeSubclassLimiter(None)

+CACHE_PHILO_ROOT = getattr(settings, "PHILO_CACHE_PHILO_ROOT", True)

 
 
 class Node(SlugTreeEntity):
 
 
 class Node(SlugTreeEntity):


@@ -31,24 +34,30 @@ 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.
        
        """
        :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')
        
        @property
        def accepts_subpath(self):
                """A property shortcut for :attr:`self.view.accepts_subpath <View.accepts_subpath>`"""
        #: :class:`GenericForeignKey` to a non-abstract subclass of :class:`View`
        view = generic.GenericForeignKey('view_content_type', 'view_object_id')
        
        @property
        def accepts_subpath(self):
                """A property shortcut for :attr:`self.view.accepts_subpath <View.accepts_subpath>`"""

-               if self.view:
-                       return self.view.accepts_subpath
+               if self.view_object_id and self.view_content_type_id:
+                       return ContentType.objects.get_for_id(self.view_content_type_id).model_class().accepts_subpath

                return False
        
        def handles_subpath(self, subpath):
                return False
        
        def handles_subpath(self, subpath):

-               return self.view.handles_subpath(subpath)
+               if self.view_object_id and self.view_content_type_id:
+                       return ContentType.objects.get_for_id(self.view_content_type_id).model_class().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`"""
        
        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_object_id and self.view_content_type_id:
+                       view_model = ContentType.objects.get_for_id(self.view_content_type_id).model_class()
+                       self.view = view_model._default_manager.select_related(depth=1).get(pk=self.view_object_id)
+                       return self.view.render_to_response(request, extra_context)
+               raise Http404

        
        def get_absolute_url(self, request=None, with_domain=False, secure=False):
                """
        
        def get_absolute_url(self, request=None, with_domain=False, secure=False):
                """


@@ -65,6 +74,8 @@ class Node(SlugTreeEntity):
                
                Node urls will not contain a trailing slash unless a subpath is provided which ends with a trailing slash. Subpaths are expected to begin with a slash, as if returned by :func:`django.core.urlresolvers.reverse`.
                
                
                Node urls will not contain a trailing slash unless a subpath is provided which ends with a trailing slash. Subpaths are expected to begin with a slash, as if returned by :func:`django.core.urlresolvers.reverse`.
                

+               Because this method will be called frequently and will always try to reverse ``philo-root``, the results of that reversal will be cached by default. This can be disabled by setting :setting:`PHILO_CACHE_PHILO_ROOT` to ``False``.
+               

                :meth:`construct_url` may raise the following exceptions:
                
                - :class:`NoReverseMatch` if "philo-root" is not reversable -- for example, if :mod:`philo.urls` is not included anywhere in your urlpatterns.
                :meth:`construct_url` may raise the following exceptions:
                
                - :class:`NoReverseMatch` if "philo-root" is not reversable -- for example, if :mod:`philo.urls` is not included anywhere in your urlpatterns.


@@ -79,7 +90,14 @@ class Node(SlugTreeEntity):
                
                """
                # Try reversing philo-root first, since we can't do anything if that fails.
                
                """
                # Try reversing philo-root first, since we can't do anything if that fails.

-               root_url = reverse('philo-root')
+               if CACHE_PHILO_ROOT:
+                       key = "CACHE_PHILO_ROOT__" + settings.ROOT_URLCONF
+                       root_url = cache.get(key)
+                       if root_url is None:
+                               root_url = reverse('philo-root')
+                               cache.set(key, root_url)
+               else:
+                       root_url = reverse('philo-root')

                
                try:
                        current_site = Site.objects.get_current()
                
                try:
                        current_site = Site.objects.get_current()


@@ -122,12 +140,13 @@ class View(Entity):
        #: A generic relation back to nodes.
        nodes = generic.GenericRelation(Node, content_type_field='view_content_type', object_id_field='view_object_id')
        
        #: A generic relation back to nodes.
        nodes = generic.GenericRelation(Node, content_type_field='view_content_type', object_id_field='view_object_id')
        

-       #: Property or attribute which defines whether this :class:`View` can handle subpaths. Default: ``False``
+       #: An attribute on the class which defines whether this :class:`View` can handle subpaths. Default: ``False``

        accepts_subpath = False
        
        accepts_subpath = False
        

-       def handles_subpath(self, subpath):
+       @classmethod
+       def handles_subpath(cls, subpath):

                """Returns True if the :class:`View` handles the given subpath, and False otherwise."""
                """Returns True if the :class:`View` handles the given subpath, and False otherwise."""

-               if not self.accepts_subpath and subpath != "/":
+               if not cls.accepts_subpath and subpath != "/":

                        return False
                return True
        
                        return False
                return True
        


@@ -222,15 +241,6 @@ class MultiView(View):
                """Returns urlpatterns that point to views (generally methods on the class). :class:`MultiView`\ s can be thought of as "managing" these subpaths."""
                raise NotImplementedError("MultiView subclasses must implement urlpatterns.")
        
                """Returns urlpatterns that point to views (generally methods on the class). :class:`MultiView`\ s can be thought of as "managing" these subpaths."""
                raise NotImplementedError("MultiView subclasses must implement urlpatterns.")
        

-       def handles_subpath(self, subpath):
-               if not super(MultiView, self).handles_subpath(subpath):
-                       return False
-               try:
-                       resolve(subpath, urlconf=self)
-               except Http404:
-                       return False
-               return True
-       

        def actually_render_to_response(self, request, extra_context=None):
                """
                Resolves the remaining subpath left after finding this :class:`View`'s node using :attr:`self.urlpatterns <urlpatterns>` and renders the view function (or method) found with the appropriate args and kwargs.
        def actually_render_to_response(self, request, extra_context=None):
                """
                Resolves the remaining subpath left after finding this :class:`View`'s node using :attr:`self.urlpatterns <urlpatterns>` and renders the view function (or method) found with the appropriate args and kwargs.