code: def log(request):
      
      if request.method == "POST":
          log_dict = json_body(request.body.decode("utf-8"))
          if 'message' not in log_dict:
              return HttpResponseBadRequest('There is no message to log!')
          levels = {
              'debug': JAVASCRIPT_LOGGER.debug,
              'info': JAVASCRIPT_LOGGER.info,
              'warn': JAVASCRIPT_LOGGER.warn,
              'error': JAVASCRIPT_LOGGER.error,
          }
          log_fun = JAVASCRIPT_LOGGER.info
          if 'level' in log_dict:
              log_fun = levels[log_dict['level']]
          log_fun(log_dict['message'], extra={
              'request': request,
              'user': request.user.id if request.user.is_authenticated() else None,
              'client_data': json_lib.dumps(log_dict.get('data', {})),
          })
          return HttpResponse('ok', status=201)
      else:
          return render_json(request, {}, template='common_log_service.html', help_text=log.__doc__)
docs: Log an event from the client to the server.
  
      POST parameters (JSON keys):
        message:
          description (str) of the logged event
        level:
          debug|info|warn|error
        data:
          additional data (JSON) describing the logged event