Moved all navigation-related code to contrib/navigation. Refactored navigation to...

[philo.git] / models / nodes.py

diff --git a/models/nodes.py b/models/nodes.py
index 1e7622a..de10ed1 100644 (file)
--- a/models/nodes.py
+++ b/models/nodes.py
@@ -3,12 +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.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.servers.basehttp import FileWrapper

-from django.core.urlresolvers import resolve
+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 inspect import getargspec

-from philo.models.base import TreeEntity, Entity, QuerySetMapper
+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.utils import ContentTypeSubclassLimiter
 from philo.validators import RedirectValidator

+from philo.exceptions import ViewCanNotProvideSubpath, ViewDoesNotProvideSubpaths, AncestorDoesNotExist
+from philo.signals import view_about_to_render, view_finished_rendering

 
 
 _view_content_type_limiter = ContentTypeSubclassLimiter(None)
 
 
 _view_content_type_limiter = ContentTypeSubclassLimiter(None)


@@ -21,10 +26,27 @@ class Node(TreeEntity):
        
        @property
        def accepts_subpath(self):
        
        @property
        def accepts_subpath(self):

-               return self.view.accepts_subpath
-       
-       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)
+               if self.view:
+                       return self.view.accepts_subpath
+               return False
+       
+       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'
        
        class Meta:
                app_label = 'philo'


@@ -39,13 +61,34 @@ class View(Entity):
        
        accepts_subpath = False
        
        
        accepts_subpath = False
        

+       def get_subpath(self, obj):
+               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 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:
                raise NotImplementedError('View subclasses must implement render_to_response.')
        
        class Meta:


@@ -58,22 +101,32 @@ _view_content_type_limiter.cls = View
 class MultiView(View):
        accepts_subpath = True
        
 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
                view, args, kwargs = resolve(subpath, urlconf=self)
                if not subpath:
                        subpath = ""
                subpath = "/" + subpath
                view, args, kwargs = resolve(subpath, urlconf=self)

-               view_args = getargspec(view)[0]
-               if extra_context is not None and 'extra_context' in view_args:
+               view_args = getargspec(view)
+               if extra_context is not None and ('extra_context' in view_args[0] or view_args[2] is not None):

                        if 'extra_context' in kwargs:
                                extra_context.update(kwargs['extra_context'])
                        kwargs['extra_context'] = extra_context
                        if 'extra_context' in kwargs:
                                extra_context.update(kwargs['extra_context'])
                        kwargs['extra_context'] = extra_context

-               if 'node' in view_args:
-                       kwargs['node'] = node

                return view(request, *args, **kwargs)
        
                return view(request, *args, **kwargs)
        

+       def reverse(self, view_name, args=None, kwargs=None, node=None):
+               """Shortcut method to handle the common pattern of getting the absolute url for a multiview's
+               subpaths."""
+               subpath = reverse(view_name, urlconf=self, args=args or [], kwargs=kwargs or {})
+               if node is not None:
+                       return '/%s/%s/' % (node.get_absolute_url().strip('/'), subpath.strip('/'))
+               return subpath
+       

        class Meta:
                abstract = True
 
        class Meta:
                abstract = True
 


@@ -86,7 +139,7 @@ class Redirect(View):
        target = models.CharField(max_length=200, validators=[RedirectValidator()])
        status_code = models.IntegerField(choices=STATUS_CODES, default=302, verbose_name='redirect type')
        
        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
                response = HttpResponseRedirect(self.target)
                response.status_code = self.status_code
                return response


@@ -95,13 +148,14 @@ class Redirect(View):
                app_label = 'philo'
 
 
                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')
        
 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
                wrapper = FileWrapper(self.file)
                response = HttpResponse(wrapper, content_type=self.mimetype)
                response['Content-Length'] = self.file.size


@@ -111,4 +165,8 @@ class File(View):
                app_label = 'philo'
        
        def __unicode__(self):
                app_label = 'philo'
        
        def __unicode__(self):

-               return self.file.name
\ No newline at end of file
+               return self.file.name
+
+
+register_templatetags('philo.templatetags.nodes')
+register_value_model(Node)
\ No newline at end of file