Tasks: Use CalDAV's 0-9 priority system

[angelsl]

Nextcloud treats priority 1 as high and 9 as low, but Tasks.org is the reverse.

Would be great if there were some option for this.

[abaker]

Are you talking about the order the priorities are displayed in the edit screen?

The values should be mapped to the caldav spec correctly (link):

This priority is specified as an integer in the range 0
to 9. A value of 0 specifies an undefined priority. A value of 1
is the highest priority. A value of 2 is the second highest
priority. Subsequent numbers specify a decreasing ordinal
priority. A value of 9 is the lowest priority.

A CUA with a three-level priority scheme of "HIGH", "MEDIUM", and
"LOW" is mapped into this property such that a property value in
the range of 1 to 4 specifies "HIGH" priority. A value of 5 is
the normal or "MEDIUM" priority. A value in the range of 6 to 9
is "LOW" priority.

So a Nextcloud priority of 1-4 will be red (high) in Tasks, 5 will be yellow (medium), and 6-9 will be blue (low). If the priority is undefined then it will be grey (none) in Tasks

[angelsl]

Ah I see. My bad then, thanks for clarifying! My tasks had priority 1 and 2, and they sorted in the reverse order from what Nextcloud disaplyed.

[abaker]

Ah, yes, unfortunately Tasks will treat them the same. I should probably support CalDAV's priority system

[abaker]

Tasks should store priorities as 0-9 in the database and let users choose which priority system to use in the edit screen

[szaimen]

Maybe I should link to the following discussion:
https://github.com/nextcloud/tasks/issues/1128

[Torenga]

Maybe I should link to the following discussion:

My ticket! Obviously I'm not a fan of the 10-level system _and_ would love 100% compatability between NextCloud and Tasks. For priority compatabillity one basically have to understand the rfc5545 and what number corresponds to what priority in NextCloud - Because they're not using the defacto standard.

This comment sums up the design and principle pretty well

Tasks should store priorities as 0-9 in the database and let users choose which priority system to use in the edit screen

I'm very OK with the ability to choose, but believe that people primarily use one or the other system (4 or 10 levels) so would request that it's an app setting rather than an edit-screen selector. Either it's going to be something I'll have to toggle every time I create a task if it defaults to the wrong system, or have a "useless" option I never have to change if it defaults to my preferred system.