X-Git-Url: http://git.ithinksw.org/philo.git/blobdiff_plain/a10d536d08f92d270e9ddcb240b7eded89d0e707..caafce88e26fef7f0cd5be751c1f0fa8bd0b5a06:/models/nodes.py

diff --git a/models/nodes.py b/models/nodes.py
index 56cbb12..0ece55f 100644
--- a/models/nodes.py
+++ b/models/nodes.py
@@ -3,14 +3,17 @@ from django.contrib.contenttypes.models import ContentType
 from django.contrib.contenttypes import generic
 from django.contrib.sites.models import Site
 from django.http import HttpResponse, HttpResponseServerError, HttpResponseRedirect
+from django.core.exceptions import ViewDoesNotExist
 from django.core.servers.basehttp import FileWrapper
-from django.core.urlresolvers import resolve, clear_url_caches
+from django.core.urlresolvers import resolve, clear_url_caches, reverse, NoReverseMatch
 from django.template import add_to_builtins as register_templatetags
 from inspect import getargspec
+from philo.exceptions import MIDDLEWARE_NOT_CONFIGURED
 from philo.models.base import TreeEntity, Entity, QuerySetMapper, register_value_model
 from philo.utils import ContentTypeSubclassLimiter
 from philo.validators import RedirectValidator
-from philo.exceptions import ViewDoesNotProvideSubpaths
+from philo.exceptions import ViewCanNotProvideSubpath, ViewDoesNotProvideSubpaths, AncestorDoesNotExist
+from philo.signals import view_about_to_render, view_finished_rendering
 
 
 _view_content_type_limiter = ContentTypeSubclassLimiter(None)
@@ -27,8 +30,23 @@ class Node(TreeEntity):
 			return self.view.accepts_subpath
 		return False
 	
-	def render_to_response(self, request, path=None, subpath=None, extra_context=None):
-		return self.view.render_to_response(self, request, path, subpath, extra_context)
+	def render_to_response(self, request, extra_context=None):
+		return self.view.render_to_response(request, extra_context)
+	
+	def get_absolute_url(self):
+		try:
+			root = Site.objects.get_current().root_node
+		except Site.DoesNotExist:
+			root = None
+		
+		try:
+			path = self.get_path(root=root)
+			if path:
+				path += '/'
+			root_url = reverse('philo-root')
+			return '%s%s' % (root_url, path)
+		except AncestorDoesNotExist, ViewDoesNotExist:
+			return None
 	
 	class Meta:
 		app_label = 'philo'
@@ -44,15 +62,33 @@ class View(Entity):
 	accepts_subpath = False
 	
 	def get_subpath(self, obj):
-		raise ViewDoesNotProvideSubpaths
+		if not self.accepts_subpath:
+			raise ViewDoesNotProvideSubpaths
+		
+		view_name, args, kwargs = self.get_reverse_params(obj)
+		try:
+			return reverse(view_name, args=args, kwargs=kwargs, urlconf=self)
+		except NoReverseMatch:
+			raise ViewCanNotProvideSubpath
+	
+	def get_reverse_params(self, obj):
+		"""This method should return a view_name, args, kwargs tuple suitable for reversing a url for the given obj using self as the urlconf."""
+		raise NotImplementedError("View subclasses must implement get_reverse_params to support subpaths.")
 	
 	def attributes_with_node(self, node):
 		return QuerySetMapper(self.attribute_set, passthrough=node.attributes)
 	
-	def relationships_with_node(self, node):
-		return QuerySetMapper(self.relationship_set, passthrough=node.relationships)
+	def render_to_response(self, request, extra_context=None):
+		if not hasattr(request, 'node'):
+			raise MIDDLEWARE_NOT_CONFIGURED
+		
+		extra_context = extra_context or {}
+		view_about_to_render.send(sender=self, request=request, extra_context=extra_context)
+		response = self.actually_render_to_response(request, extra_context)
+		view_finished_rendering.send(sender=self, response=response)
+		return response
 	
-	def render_to_response(self, node, request, path=None, subpath=None, extra_context=None):
+	def actually_render_to_response(self, request, extra_context=None):
 		raise NotImplementedError('View subclasses must implement render_to_response.')
 	
 	class Meta:
@@ -65,10 +101,13 @@ _view_content_type_limiter.cls = View
 class MultiView(View):
 	accepts_subpath = True
 	
-	urlpatterns = []
+	@property
+	def urlpatterns(self, obj):
+		raise NotImplementedError("MultiView subclasses must implement urlpatterns.")
 	
-	def render_to_response(self, node, request, path=None, subpath=None, extra_context=None):
+	def actually_render_to_response(self, request, extra_context=None):
 		clear_url_caches()
+		subpath = request.node.subpath
 		if not subpath:
 			subpath = ""
 		subpath = "/" + subpath
@@ -78,8 +117,6 @@ class MultiView(View):
 			if 'extra_context' in kwargs:
 				extra_context.update(kwargs['extra_context'])
 			kwargs['extra_context'] = extra_context
-		if 'node' in view_args[0] or view_args[2] is not None:
-			kwargs['node'] = node
 		return view(request, *args, **kwargs)
 	
 	class Meta:
@@ -94,7 +131,7 @@ class Redirect(View):
 	target = models.CharField(max_length=200, validators=[RedirectValidator()])
 	status_code = models.IntegerField(choices=STATUS_CODES, default=302, verbose_name='redirect type')
 	
-	def render_to_response(self, node, request, path=None, subpath=None, extra_context=None):
+	def actually_render_to_response(self, request, extra_context=None):
 		response = HttpResponseRedirect(self.target)
 		response.status_code = self.status_code
 		return response
@@ -103,13 +140,14 @@ class Redirect(View):
 		app_label = 'philo'
 
 
+# Why does this exist?
 class File(View):
 	""" For storing arbitrary files """
 	
 	mimetype = models.CharField(max_length=255)
 	file = models.FileField(upload_to='philo/files/%Y/%m/%d')
 	
-	def render_to_response(self, node, request, path=None, subpath=None, extra_context=None):
+	def actually_render_to_response(self, request, extra_context=None):
 		wrapper = FileWrapper(self.file)
 		response = HttpResponse(wrapper, content_type=self.mimetype)
 		response['Content-Length'] = self.file.size