def widget_download_response(request, classname):
"""Retrieve a widget as a different format."""
method = request.GET.get("as", "svg")
mimetype = {
'svg': "image/svg+xml",
'png': "image/png",
'csv': "text/csv",
'html': "text/html",
}[method]
widget_class = get_widget_class(classname)
widget = widget_class()
fn = getattr(widget, 'as_%s' % method)
values = _getquery_to_dict(widget_class.options, request.GET)
values = process_values(values, widget_class.options)
response = HttpResponse(mimetype=mimetype)
response['Content-Disposition'] = 'attachment; filename=%s_%s.%s' % (
classname,
datetime.datetime.now(),
method)
try:
fn(values, response)
return response
except NotImplementedError:
return HttpResponse("Sorry that format is not available.", status=404)
def register_by_qualified_name(self, name):
"""Add the widget by name, if it isn't already there."""
if name in self._register:
return
self._register[name] = get_widget_class(name)
