Per-user settings for shared events

[simonspa]

I would like to open a ticket concerning the functionality mentioned in #679. @georgehrke quoted the CalDAV sharing standard like this:

In section 5.5.4 it says:

Servers MUST support "per-user" calendar data in calendar object resources stored in shared calendars. This allows each sharee and the sharer to store their own alarms and free busy transparency status without "interfering" with other users who also have access to the same calendar object resources.

However, in the related PR #6903 only the minimal solution of silencing shared read-only calendars was implemented if I understand correctly. I would like to come back to this "full feature set" because of the following use case - which I suspect is very common:

• I am subscribed to many calendars (read-only) with seminars, lectures, meetings
• Some I have to attend or find interesting, so I would like to
  • set a reminder for them
  • set my own status to "busy" during these meetings

Right now I basically have to create a duplicate event in my own (writable) calendar to be able to do this. The cherry on the cake would be if this would also work for WebCal subscriptions.

[georgehrke]

@simonspa A pull-request would be very much appreciated. Thx!

[simonspa]

@georgehrke Phew, don't you think this would even qualify for "technical depth" and is a bit over the top for a rookie like me? :)

[quentinDupont]

Hello !

It seems (and I believe the person who write it) that this issue is related to my issue, described here #2469 that I repeat :

Is your feature request related to a problem? Please describe.
As owner of a calendar I can create an event and e-mails are sent to the defined attendies, which works fine.
When the calendar is shared and edit-rights are given to other persons, these persons can create events in the shared calendar.
But for these events, no emails are sent to the attendies.

Describe the solution you'd like
If a calendar is shared and edit-rights are given, for events created by non-owner e-mails should be send to the attendies.

In my usercase (shared calendar to book meeting rooms), it's quite problematic.
Thanks for your help !

[tcitworld]

@quentinDupont See #26668