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Werk #19519: Fix empty host/service group columns in CSV and JSON export

Component User interface
Title Fix empty host/service group columns in CSV and JSON export
Date Mar 26, 2026
Level Trivial Change
Class Bug Fix
Compatibility Compatible - no manual interaction needed
Checkmk versions & editions
2.6.0b1
Not yet released
Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT
2.5.0b2
Not yet released
Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT
2.4.0p26
Not yet released
Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT

Previously, when exporting a view containing the "Host groups the host is member of" or "Service groups the service is member of" columns to CSV or JSON, the exported values were empty or contained only commas instead of the actual group names. This was caused by a refactoring of the painter link generation which introduced a display options check. During CSV/JSON export, display options disable link rendering, causing the link helper to return empty HTML. Since these painters relied entirely on link rendering for their output and had no dedicated export methods, the exported data was empty.

The painters now provide explicit export methods that return group names directly from the row data, bypassing HTML link generation.

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