Moved caching of contentlets/contentreferences so that (for example) a page with...

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

diff --git a/philo/templatetags/containers.py b/philo/templatetags/containers.py
index c9ef2a0..3956f1d 100644 (file)
--- a/philo/templatetags/containers.py
+++ b/philo/templatetags/containers.py
@@ -18,9 +18,29 @@ 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))
+       def __init__(self, page):
+               self.page = page
+       
+       def get_contentlets(self):
+               if not hasattr(self, '_contentlets'):
+                       self._contentlets = dict(((c.name, c) for c in self.page.contentlets.all()))
+               return self._contentlets
+       
+       def get_references(self):
+               if not hasattr(self, '_references'):
+                       references = self.page.contentreferences.all()
+                       self._references = {}
+                       contents = {}
+                       for c in references:
+                               ct = ContentType.objects.get_for_id(c.content_type_id)
+                               self.references[(c.name, ct)] = c
+                               contents.setdefault(ct, {})[c.content_id] = c
+                       
+                       for ct in contents:
+                               objs = ct.model_class().objects.filter(pk__in=contents[ct])
+                               for obj in objs:
+                                       contents[ct][obj.pk].content = obj
+               return self._references
 
 
 class ContainerNode(template.Node):
@@ -47,16 +67,13 @@ class ContainerNode(template.Node):
                        except KeyError:
                                return settings.TEMPLATE_STRING_IF_INVALID
                        
-                       contentlets = page.contentlets.all()
-                       references = page.contentreferences.all()
-                       
-                       container_context = ContainerContext(contentlets, references)
+                       container_context = ContainerContext(page)
                        context.render_context[CONTAINER_CONTEXT_KEY] = container_context
                
                if self.references:
                        # Then it's a content reference.
                        try:
-                               contentreference = container_context.references[(self.name, self.references)]
+                               contentreference = container_context.get_references()[(self.name, self.references)]
                        except KeyError:
                                content = ''
                        else:
@@ -64,7 +81,7 @@ class ContainerNode(template.Node):
                else:
                        # Otherwise it's a contentlet.
                        try:
-                               contentlet = container_context.contentlets[self.name]
+                               contentlet = container_context.get_contentlets()[self.name]
                        except KeyError:
                                content = ''
                        else: