OptionalmaxFor number: maximum value.
OptionalmaxFor text: maximum character length.
OptionalmaxFor multiselect: maximum number of selections allowed.
OptionalminFor number: minimum value.
OptionalminFor text: minimum character length.
OptionalminFor multiselect: minimum number of selections required.
OptionalpatternFor text: regex pattern the input must match.
OptionalpatternCustom error message when pattern validation fails.
OptionalrequiredWhether the input is required (non-empty).
Validation constraints for HITL input.