Werk #16640: Ruleset API: Improve custom validation

Component

Checks & agents

Title

Ruleset API: Improve custom validation

Date

Mar 14, 2024

Level

Trivial Change

Class

Bug Fix

Compatibility

Incompatible - Manual interaction might be required

Checkmk versions & editions

2.4.0b1	Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk Cloud (CCE), Checkmk MSP (CME)
2.3.0b4	Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk Cloud (CCE), Checkmk MSP (CME)

To better support the combination of different validation functions, FormSpecs now expect a sequence of validation functions instead of just one for custom_validate.

The validation of empty inputs is now handled in the new validator LengthInRange instead of DisallowEmpty. If you used

custom_validate=DisallowEmpty()

before, use

custom_validate=LengthInRange(min_value=1)

now. For consistency, InRange is renamed to NumberInRange

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