I edited a recurring event and it created a new event

The event_id convention for recurring events changes once you edit an occurrence. The original is still returned when using expand_recurring=True , however it is set to cancelled.

When editing a child event the event_id changes and two webhooks are created.

GMAIL Behaviour:

• Edit a recurring child event
  • PUT /event/9r7szd0i6xkk92kqq6no3c1pi_20220505T233000Z
• This will create a new event

"id": "50vednoawzvnd3zfpbnfwvfzp",   <<<<<<<< new ID
"job_status_id": "775q59svgwwfkdf50sr4c4x94",
"location": null,
"master_event_id": "9r7szd0i6xkk92kqq6no3c1pi",   <<<<<< same master

Generate two webhooks:

• event.created and event.updated on the new event_id.
• there is NO event.updated on the master event.

When you search for events between a time period and include expand_recurring=True&showDeleted=True. Any cancellations are returned in addition to the base event and the new event. Cancellations have the attribute cancelled == true.

MS Behaviour:

When you edit a child recurring event we:

• Add the event_id to the attribute EXDATE on the master /event
  • event.update webhook for master event_id
  • Mark the event_id as cancelled
• Create a new override event with the edited values
  • event.created

The difference is that we do NOT edit the master event on GMAIL. However you can track the relationship using master_event_id.

Resources:

Highly recommended blog post explaining all the behaviours.

https://developer.nylas.com/docs/connectivity/calendar/recurring-events/#expand-recurring-parameter  

Updated March 15, 2023 15:32