form_to_json.py

def some_view(request):
  form = SomeForm(request.POST)
  form_json = {
    name: {
    "help_text": field.help_text,
    "initial": field.initial,
    "label": field.label[:],
    "max_length": field.max_length,
    "min_length": field.min_length,
    "required": field.required,
    "widget": type(field).__name__,
    "widget_attrs": field.widget_attrs(field.widget),
  } for name, field in form.fields.items() }
  
  return HttpResponse(json.dumps(form_json, content_type="application/json")