No icons (or event text of any kind) in Calendar mode using caldav integration

I’m using the caldav integration pointing to a Nextcloud instance which works in HA’s calendar, shows all four of the calendars I’ve defined, and works in the Event view.

Expected behaviour

I would expect to see icons on days where events exist in the Calendar mode.

Current behaviour

I do not see any indication of any events in the Calendar mode.

Screenshot

On the left is the HA calendar card for reference. As you can see, events are indicated here, but not on the atomic-calendar-revive card.

Possible reasons and solutions

As noted here even with the google-calendar integration, extra configuration is required to show more than 5 events. The configuration options for google calendar and caldav are different, so it’s possible that atomic calendar revive is looking for a parameter that is missing from the caldav integration. This is speculation, of course. 😃

Steps to reproduce

Add a caldav calendar in configuration.yaml like this:

calendar:
  - platform: caldav
    days: 45
    username: !secret nc_user
    password: !secret nc_pw
    url: !secret nc_url

With this configuration, available calendars are detected and added automatically. If the developers do not have access to a working caldav calendar, I would be happy to create a dummy calendar and temporary credentials on my server to facilitate resolving this issue.

Your environment

Running a Supervised instance of the latest HA 2021.1.5 on x86 hardware on Ubuntu 18.04 LTS. I have been running the same instance for about a year, upgrade regularly and have significant experience as a Linux system administrator and software engineer. I run a tight ship and RTFM regularly. 😃

Checklist

• I searched the current issues and the issue is not known.
• I searched the troubleshooting and there’s no fix available for this bug.
• I searched on Google, YouTube, Reddit and there’s no fix.
• I am mostly sure that the problem is related to the code and isn’t my fault.

Please let me know what else I can do to help get this sorted - I love the card and would love to use it to help my family plan their day!

[marksie1988]

I’ll try to take a look at this tomorrow, hopefully get to the bottom of this.

Thanks for reporting this, as I don’t use caldav and have only just added some support for it I hadn’t noticed this wasn’t working.

[mainmachine]

Wow, thanks for addressing this issue, and so quickly! I’ve never used Github’s CI or build automation, and it’s really interesting to be able to track the progress from here to a release. Keep up the good work! 😄