how to use "getresponsestatus" in google api calendar - api

Question

I'm working in a project and I need to consult the attendees response. I want to create a script that every hours check if some attendee change your response status, but I can't find any documentation how this works, an example of my code when I insert the event:
if (isset($_SESSION['access_token'])) {
$client->setAccessToken($_SESSION['access_token']);
$service = new Google_Service_Calendar($client);
$event = new Google_Service_Calendar_Event(array(
'summary' => $summary,
'location' => $location,
'description' => $descripcion,
'colorId'=> "5",
'start' => array(
'dateTime' => $datetimeini,
'timeZone' => 'America/Caracas'
),
'end' => array(
'dateTime' => $datetimeini,
'timeZone' => 'America/Caracas'
),
'recurrence' => array(
'RRULE:FREQ=DAILY;COUNT=1'
),
'attendees' => array(
array('email' => $paciente,'responseStatus'=> 'needsAction'),
array('email' => $doctor)
),
'reminders' => array(
'useDefault' => FALSE,
'overrides' => array(
array('method' => 'email', 'minutes' => 12 * 60),
array('method' => 'popup', 'minutes' => 60)
),
),
));
$new_event = null;
$new_event_id = "";
$new_event = $service->events->insert($idcalendar, $event);
if($new_event!=null){
$new_event_id= $new_event->getid();
$event = $service->events->get($idcalendar,$new_event_id);
$response = new Google_Service_Calendar_EventAttendee($client);
if($event != null){
$resultado=array(
"respuesta"=>"exitoso",
"id evento"=>$event->getid(),
"sumario"=>$event->getSummary(),
"estado"=>$event->getstatus(),
"response"=>$event->getresponseStatus()
);
}else{
echo 'hay problemas.';
}
If I try this code on response I just get null. I want to get the real response.

Answer 1

You may use the Events: watch method which watches for changes to Events resources.
HTTP request
POST https://www.googleapis.com/calendar/v3/calendars/calendarId/events/watch
In the request body, supply data with the following structure:
{
"id": string,
"token": string,
"type": string,
"address": string,
"params": {
"ttl": string
}
}