def get_query_string(self,*args,**kwargs):
return get_query_string(self.request,*args,**kwargs)<EOL>
Allows access to query string (with facilities to manipulate the string,
e.g., removing or adding query attributes. We use this, for example,
in the paginator, which needs to create a link with the current
query and change around the 'page' part of the query string.