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 render(self, context):
from widgets.utils import options_to_query_string
resolved = dict((opt.name, opt.resolve_value(context, value))
for opt, value in self.values)
options = process_values(resolved, self.widget.options)
as_name = self.as_name
if as_name:
as_name = self.as_name.resolve(context)
return self.widget._render_wrapper(
options=options,
context=context,
uid=as_name,
raw_options=resolved,
query_string=options_to_query_string(
self.widget.__class__,
options))