def postman_order_by(parser, token):
"""
Compose a query string to ask for a specific ordering in messages list.
The unique argument must be one of the keywords of a set defined in the model.
Example::
<a href="{% postman_order_by subject %}">...</a>
"""
try:
tag_name, field_name = token.split_contents()
field_code = ORDER_BY_MAPPER[field_name.lower()]
except ValueError:
raise TemplateSyntaxError("'{0}' tag requires a single argument".format(token.contents.split()[0]))
except KeyError:
raise TemplateSyntaxError(
"'{0}' is not a valid argument to '{1}' tag."
" Must be one of: {2}".format(field_name, tag_name, ORDER_BY_MAPPER.keys()))
return OrderByNode(field_code)
def postman_order_by(parser, token):
"""
Compose a query string to ask for a specific ordering in messages list.
The unique argument must be one of the keywords of a set defined in the model.
Example::
<a href="{% postman_order_by subject %}">...</a>
"""
try:
tag_name, field_name = token.split_contents()
field_code = ORDER_BY_MAPPER[field_name.lower()]
except ValueError:
raise TemplateSyntaxError("'{0}' tag requires a single argument".format(token.contents.split()[0]))
except KeyError:
raise TemplateSyntaxError(
"'{0}' is not a valid argument to '{1}' tag."
" Must be one of: {2}".format(field_name, tag_name, ORDER_BY_MAPPER.keys()))
return OrderByNode(field_code)