Merge branch 'node_middleware'

[philo.git] / models / nodes.py

diff --git a/models/nodes.py b/models/nodes.py
index 78df3d6..ae2e081 100644 (file)
--- a/models/nodes.py
+++ b/models/nodes.py
@@ -1,19 +1,45 @@
 from django.db import models
 from django.db import models

+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.servers.basehttp import FileWrapper
 from django.contrib.sites.models import Site
 from django.http import HttpResponse, HttpResponseServerError, HttpResponseRedirect
 from django.core.servers.basehttp import FileWrapper

-from philo.models.base import InheritableTreeEntity
+from django.core.urlresolvers import resolve, clear_url_caches
+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.validators import RedirectValidator

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

 
 
 
 

-class Node(InheritableTreeEntity):
-       accepts_subpath = False
+_view_content_type_limiter = ContentTypeSubclassLimiter(None)
+
+
+class Node(TreeEntity):
+       view_content_type = models.ForeignKey(ContentType, related_name='node_view_set', limit_choices_to=_view_content_type_limiter)
+       view_object_id = models.PositiveIntegerField()
+       view = generic.GenericForeignKey('view_content_type', 'view_object_id')
+       
+       @property
+       def accepts_subpath(self):
+               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):
+               root = Site.objects.get_current().root_node
+               try:
+                       return '/%s' % self.get_path(root=root)
+               except AncestorDoesNotExist:
+                       return None

        
        

-       def render_to_response(self, request, path=None, subpath=None):
-               return HttpResponseServerError()
-               

        class Meta:
        class Meta:

-               unique_together = (('parent', 'slug'),)

                app_label = 'philo'
 
 
                app_label = 'philo'
 
 


@@ -21,33 +47,69 @@ class Node(InheritableTreeEntity):
 models.ForeignKey(Node, related_name='sites', null=True, blank=True).contribute_to_class(Site, 'root_node')
 
 
 models.ForeignKey(Node, related_name='sites', null=True, blank=True).contribute_to_class(Site, 'root_node')
 
 

-class MultiNode(Node):
+class View(Entity):
+       nodes = generic.GenericRelation(Node, content_type_field='view_content_type', object_id_field='view_object_id')
+       
+       accepts_subpath = False
+       
+       def get_subpath(self, obj):
+               raise ViewDoesNotProvideSubpaths
+       
+       def attributes_with_node(self, node):
+               return QuerySetMapper(self.attribute_set, passthrough=node.attributes)
+       
+       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 actually_render_to_response(self, request, extra_context=None):
+               raise NotImplementedError('View subclasses must implement render_to_response.')
+       
+       class Meta:
+               abstract = True
+
+
+_view_content_type_limiter.cls = View
+
+
+class MultiView(View):

        accepts_subpath = True
        
        urlpatterns = []
        
        accepts_subpath = True
        
        urlpatterns = []
        

-       def render_to_response(self, request, path=None, subpath=None):
+       def actually_render_to_response(self, request, extra_context=None):
+               clear_url_caches()
+               subpath = request.node.subpath

                if not subpath:
                        subpath = ""
                subpath = "/" + subpath
                if not subpath:
                        subpath = ""
                subpath = "/" + subpath

-               from django.core.urlresolvers import resolve

                view, args, kwargs = resolve(subpath, urlconf=self)
                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):
+                       if 'extra_context' in kwargs:
+                               extra_context.update(kwargs['extra_context'])
+                       kwargs['extra_context'] = extra_context

                return view(request, *args, **kwargs)
        
        class Meta:
                abstract = True
                return view(request, *args, **kwargs)
        
        class Meta:
                abstract = True

-               app_label = 'philo'

 
 
 
 

-class Redirect(Node):
+class Redirect(View):

        STATUS_CODES = (
                (302, 'Temporary'),
                (301, 'Permanent'),
        )
        STATUS_CODES = (
                (302, 'Temporary'),
                (301, 'Permanent'),
        )

-       target = models.CharField(max_length=200,validators=[RedirectValidator()])
+       target = models.CharField(max_length=200, validators=[RedirectValidator()])

        status_code = models.IntegerField(choices=STATUS_CODES, default=302, verbose_name='redirect type')
        
        status_code = models.IntegerField(choices=STATUS_CODES, default=302, verbose_name='redirect type')
        

-       def render_to_response(self, request, path=None, subpath=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


@@ -56,16 +118,25 @@ class Redirect(Node):
                app_label = 'philo'
 
 
                app_label = 'philo'
 
 

-class File(Node):
+# Why does this exist?
+class File(View):

        """ For storing arbitrary files """
        """ For storing arbitrary files """

+       

        mimetype = models.CharField(max_length=255)
        file = models.FileField(upload_to='philo/files/%Y/%m/%d')
        
        mimetype = models.CharField(max_length=255)
        file = models.FileField(upload_to='philo/files/%Y/%m/%d')
        

-       def render_to_response(self, request, path=None, subpath=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
                return response
        
        class Meta:
                wrapper = FileWrapper(self.file)
                response = HttpResponse(wrapper, content_type=self.mimetype)
                response['Content-Length'] = self.file.size
                return response
        
        class Meta:

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