Removed template container discovery in favor of (potentially) larger queries.

[philo.git] / philo / templatetags / containers.py

diff --git a/philo/templatetags/containers.py b/philo/templatetags/containers.py
index be94a3d..c9ef2a0 100644 (file)
--- a/philo/templatetags/containers.py
+++ b/philo/templatetags/containers.py
@@ -7,12 +7,22 @@ from django import template
 from django.conf import settings
 from django.contrib.contenttypes.models import ContentType
 from django.core.exceptions import ObjectDoesNotExist
+from django.db.models import Q
 from django.utils.safestring import SafeUnicode, mark_safe
 
 
 register = template.Library()
 
 
+CONTAINER_CONTEXT_KEY = 'philo_container_context'
+
+
+class ContainerContext(object):
+       def __init__(self, contentlets, references):
+               self.contentlets = dict(((c.name, c) for c in contentlets))
+               self.references = dict((((c.name, ContentType.objects.get_for_id(c.content_type_id)), c) for c in references))
+
+
 class ContainerNode(template.Node):
        def __init__(self, name, references=None, as_var=None):
                self.name = name
@@ -20,37 +30,45 @@ class ContainerNode(template.Node):
                self.references = references
        
        def render(self, context):
-               content = settings.TEMPLATE_STRING_IF_INVALID
-               if 'page' in context:
-                       container_content = self.get_container_content(context)
-               else:
-                       container_content = None
+               container_content = self.get_container_content(context)
                
                if self.as_var:
                        context[self.as_var] = container_content
                        return ''
                
-               if not container_content:
-                       return ''
-               
                return container_content
        
        def get_container_content(self, context):
-               page = context['page']
+               try:
+                       container_context = context.render_context[CONTAINER_CONTEXT_KEY]
+               except KeyError:
+                       try:
+                               page = context['page']
+                       except KeyError:
+                               return settings.TEMPLATE_STRING_IF_INVALID
+                       
+                       contentlets = page.contentlets.all()
+                       references = page.contentreferences.all()
+                       
+                       container_context = ContainerContext(contentlets, references)
+                       context.render_context[CONTAINER_CONTEXT_KEY] = container_context
+               
                if self.references:
                        # Then it's a content reference.
                        try:
-                               contentreference = page.contentreferences.get(name__exact=self.name, content_type=self.references)
-                               content = contentreference.content
-                       except ObjectDoesNotExist:
+                               contentreference = container_context.references[(self.name, self.references)]
+                       except KeyError:
                                content = ''
+                       else:
+                               content = contentreference.content
                else:
                        # Otherwise it's a contentlet.
                        try:
-                               contentlet = page.contentlets.get(name__exact=self.name)
-                               content = contentlet.content
-                       except ObjectDoesNotExist:
+                               contentlet = container_context.contentlets[self.name]
+                       except KeyError:
                                content = ''
+                       else:
+                               content = contentlet.content
                return content