Recurring events block all appointment slots

[bnjbvr]

I'm using Nextcloud based on the Docker image, and have updated to the latest version as to as benefit from the new calendar app, including the appointments feature about which I'm very excited!

Unfortunately, it doesn't seem to work: when I create an appointment (leaving all default values, maybe setting a title just so as to validate the form), then the preview page doesn't show any available slots at all, for any of the dates for which it should be available.

Skimming at the browser dev console, I see that the requests to fetch the list of available time slots works fine and returns a 200 http code, with a small JSON object that has status set to success, and an empty accompanying data array.

I'm using latest stable Firefox, in case that matters, and I haven't tried on other browsers.

Please let me know if/how I can help debug this! And thanks for all the work on this app and Nextcloud in general <3

[ChristophWurst]

We are obswrving this as well, but only on one specific instance. If you run into the same bug then creating a new empty calendar and using that as target will result in available slots. So the problem seem to be the conflict checks.

[ChristophWurst]

#3773 is our first attempt at improving this.

[tcitworld]

I can confirm the issue and the workaround.

[ChristophWurst]

Do you have the ability to attach a debugger to your server? Are you familiar with xdebug? :)

[ChristophWurst]

I can confirm the issue and the workaround

Oh. So after @miaulalala's patch slots show up? So it was some calendar objects other thatn VEVENT's that conflicted? realize you talk about the new calendar workaround. nevermind :)

[tcitworld]

Do you have the ability to attach a debugger to your server?

I'd rather not in production but I'll test locally with a calendar export.

[ChristophWurst]

You're a genius! I can now reproduce the issue locally on my dev instance. It's all the recurring events that show up as conflicts.

[ChristophWurst]

If I'm not mistaken it's \OCA\DAV\CalDAV\CalDavBackend::search that needs better support for recurring events. It only checks if the events ends before the requested start and starts before the requested end.

We might have luck throwing it into \Sabre\CalDAV\Backend\AbstractBackend::validateFilterForObject as it is done in \OCA\DAV\CalDAV\CalDavBackend::calendarQuery.