Adding guests to calendar event by script without invites being sent - google-apps-script

Question

what I would like to do is add guests to certain google calendar events via a script I created without them being notified via an invitation. I tried the addGuest() function but whenever someone is added he or she is getting an invitation email.
Is this possible?
Thank you very much in advance.
Best, Phil
EDIT:
Thanks for your answer. Yes I'm sure there ere invites being sent. Here is the relevant part of my code:
for (i = 0; i < events.length; ++i)
{
if (events[i].getLocation().match("XYZ") || events[i].getTitle().match("ABC")) {events[i].setLocation(addabc) && events[i].addGuest(mailxyz)}
}
EDIT 2: I verified again, that invites are indeed being sent out. Here is my entire script, butI have no idea which part might cause this:
function ModifyAppointments() {
var idabc = "idabc..."
// ABC
var contactabc = ContactsApp.getContactById(idabc);
var addressabc = contactabc.getAddresses();
var addabc = addressabc[0].getAddress();
var mailsabc = contactabc.getEmails();
var mailabc = mailsabc[0].getAddress();
var today = new Date();
var start = new Date();
var end = new Date(start.getTime() +(500 * 60 * 60 * 24 * 7));
var events = CalendarApp.getDefaultCalendar().getEvents(start, end);
for (i = 0; i < events.length; ++i)
{
if (events[i].getLocation().match("abc") || events[i].getLocation().match("abc") || events[i].getTitle().match("abc") || events[i].getTitle().match("abc")) {events[i].setLocation(addabc) && events[i].addGuest(mailabc)}
}
}
EDIT 3: Here is a screenshot of one of the invites that was being sent. Unfortunately it is in German:
If you wonder why there is such a lage time between the sending of the invite and the date an time of the appointment, I used to have a larger time interval in my script. Now i shortened it to a week in advance.

Answer 1

I've had a look at this, and I'm absolutely positive that this code is not what is sending the invite. As I said, there's an open issue for this at https://code.google.com/p/google-apps-script-issues/issues/detail?id=574 because this function does not send an invite, and I've also just tested this again myself, so we can rule that out.
Here's a test function that you can copy and paste and place someone else's (Invites are never sent to the creator of the event) email address into a new script and confirm for yourself that .addGuest() is not the culprit:
function myFunction() {
var email = 'ANOTHER-PERSONS-EMAIL-HERE';
var event = CalendarApp.getDefaultCalendar().createAllDayEvent('Apollo 11 Landing',new Date('November 20, 2014'));
event.addGuest(email);
}
The remaining assumption is that some other portion of your script is sending out the invite (Once again, it is not possible for the Calendar service in the script to send an invite).

Answer 2

The problem stems from how you wrote your code. You have to iterate over an array of events. I have fixed it for you.
function myFunction() {
var today = new Date();
var email = 'ANOTHER-PERSONS-EMAIL-HERE';
var events = CalendarApp.getDefaultCalendar().getEventsForDay(today);
for (i = 0; i < events.length; ++i)
{
events[i].addGuest(email);
}
}
// Let me know if you have any questions - amir#serialmetrics.com, Amir Behbehani, // Chief Scientist, Serial Metrics