Werk #13929: checkbox tag-group handling

Component

Core & setup

Title

checkbox tag-group handling

Date

Apr 23, 2022

Level

Trivial Change

Class

Bug Fix

Compatibility

Compatible - no manual interaction needed

Checkmk versions & editions

2.2.0b1	Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk Cloud (CCE), Checkmk MSP (CME)
2.1.0b6	Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)

In previous versions when a tag-group with only one choice (a checkbox) was set to a folder and subsequently removed on a host in that folder, the "show hosts" REST API call on that folder crashed with a 500 error (with the error: "tag_xxx can not be None").

This werk fixes this behaviour. Apache still needs to be restarted so newly created tag-groups come into effect on the REST API.

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