X-Git-Url: http://git.ithinksw.org/philo.git/blobdiff_plain/6d2c7644b56ed2ecc5e274819322e077e0975fa9..ad61c0ead793098e8c9cbec326cdd3a4163f25ba:/templatetags/collections.py

diff --git a/templatetags/collections.py b/templatetags/collections.py
index ed8c54e..38b3f91 100644
--- a/templatetags/collections.py
+++ b/templatetags/collections.py
@@ -1,5 +1,6 @@
 from django import template
 from django.conf import settings
+from django.contrib.contenttypes.models import ContentType
 
 
 register = template.Library()
@@ -8,22 +9,21 @@ register = template.Library()
 class MembersofNode(template.Node):
 	def __init__(self, collection, model, as_var):
 		self.collection = template.Variable(collection)
-		self.model = template.Variable(model)
+		self.model = model
 		self.as_var = as_var
 		
 	def render(self, context):
 		try:
 			collection = self.collection.resolve(context)
-			model = self.model.resolve(context)
-			context[self.as_var] = collection.members.with_model(model)
+			context[self.as_var] = collection.members.with_model(self.model)
 		except:
 			pass
-		return settings.TEMPLATE_STRING_IF_INVALID
-	
-	
+		return ''
+
+
 def do_membersof(parser, token):
 	"""
-	{% membersof <collection> with <model> as <var> %}
+	{% membersof <collection> with <app_label>.<model_name> as <var> %}
 	"""
 	params=token.split_contents()
 	tag = params[0]
@@ -33,11 +33,19 @@ def do_membersof(parser, token):
 		
 	if params[2] != 'with':
 		raise template.TemplateSyntaxError('"%s" template tag requires the third parameter to be "with"' % tag)
+	
+	try:
+		app_label, model = params[3].strip('"').split('.')
+		ct = ContentType.objects.get(app_label=app_label, model=model)
+	except ValueError:
+		raise template.TemplateSyntaxError('"%s" template tag option "with" requires an argument of the form app_label.model (see django.contrib.contenttypes)' % tag)
+	except ContentType.DoesNotExist:
+		raise template.TemplateSyntaxError('"%s" template tag option "with" requires an argument of the form app_label.model which refers to an installed content type (see django.contrib.contenttypes)' % tag)
 		
 	if params[4] != 'as':
 		raise template.TemplateSyntaxError('"%s" template tag requires the fifth parameter to be "as"' % tag)
 	
-	return MembersofNode(collection=params[1], model=params[3], as_var=params[5])
+	return MembersofNode(collection=params[1], model=ct.model_class(), as_var=params[5])
 
 
 register.tag('membersof', do_membersof)
\ No newline at end of file