See if this tag won't work for you:
class ObjectAttribNode(template.Node):
def __init__(self, obj, attr):
self.obj = obj
self.attr = attr
def render(self, context):
print self.attr
try:
obj = resolve_variable(self.obj, context)
attr = resolve_variable(self.attr, context)
return str(getattr(obj,attr,''))
except template.VariableDoesNotExist:
return ''
def do_val_by_object_attrib(parser, token):
try:
# split_contents() knows not to split quoted strings.
tag_name, obj, attr = token.split_contents()
except ValueError:
raise template.TemplateSyntaxError, "%r tag requires exactly
two arguments" % token.contents.split()[0]
return ObjectAttribNode(obj, attr)
register.tag('val_by_object_attrib', do_val_by_object_attrib)
Then in template:
{% val_by_object_attrib object attribute_name %}
where object, and attribute_name are both variables in the context
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