From 80fa50c87ed121896ddf1bdd993d5697bb5a56c3 Mon Sep 17 00:00:00 2001
From: melinath <stephen.r.burrows@gmail.com>
Date: Wed, 9 Jun 2010 17:46:48 -0400
Subject: [PATCH] Fixed a bug where the ContainerNode had a
 nodelist_empty=None, whereas nodelist_empty is expected to be an iterable by
 line 314 of models.py. Also added 'nodelist_main' to the manage.py line 314
 list of subnodelist possibilities and added a child_nodelists attribute to
 ContainerNode for possible forward-compatibility.

---
 models.py                  |  2 +-
 templatetags/containers.py | 15 +++++++++++++--
 2 files changed, 14 insertions(+), 3 deletions(-)

diff --git a/models.py b/models.py
index b1da9d0..dcb5d74 100644
--- a/models.py
+++ b/models.py
@@ -311,7 +311,7 @@ class Template(TreeModel):
 				nodes = []
 				for node in nodelist:
 					try:
-						for nodelist_name in ('nodelist', 'nodelist_loop', 'nodelist_empty', 'nodelist_true', 'nodelist_false'):
+						for nodelist_name in ('nodelist', 'nodelist_loop', 'nodelist_empty', 'nodelist_true', 'nodelist_false', 'nodelist_main'):
 							if hasattr(node, nodelist_name):
 								nodes.extend(nodelist_container_nodes(getattr(node, nodelist_name)))
 						if isinstance(node, ContainerNode):
diff --git a/templatetags/containers.py b/templatetags/containers.py
index 45a9965..c04cb64 100644
--- a/templatetags/containers.py
+++ b/templatetags/containers.py
@@ -9,12 +9,22 @@ register = template.Library()
 
 
 class ContainerNode(template.Node):
+	child_nodelists = ('nodelist_main', 'nodelist_empty',)
+	
 	def __init__(self, name, references=None, as_var=None, nodelist_main=None, nodelist_empty=None):
 		self.name = name
 		self.as_var = as_var
 		self.references = references
-		self.nodelist_main = nodelist_main
-		self.nodelist_empty = nodelist_empty
+		
+		if nodelist_main is None:
+			self.nodelist_main = template.NodeList()
+		else:
+			self.nodelist_main = nodelist_main
+		
+		if nodelist_empty is None:
+			self.nodelist_empty = template.NodeList()
+		else:
+			self.nodelist_empty = nodelist_empty
 		
 	def render(self, context):
 		content = settings.TEMPLATE_STRING_IF_INVALID
@@ -22,6 +32,7 @@ class ContainerNode(template.Node):
 			container_content = self.get_container_content(context['page'])
 		
 		if self.nodelist_main is None:
+			self.nodelist_main
 			if container_content and self.as_var:
 				context[self.as_var] = container_content
 				return ''
-- 
2.20.1