validation/cross_field_validation_utils library
Cross-field validation (start < end, one-of required) — roadmap #682.
Functions
-
validateOneOfRequired(
List< Object?> values, {String fieldNames = _kDefaultFieldNames}) → String? -
Returns null if at least one of
valuesis non-null and non-empty (for strings). -
validateStartBeforeEnd(
num start, num end, {String startName = _kDefaultStartName, String endName = _kDefaultEndName}) → String? - Returns null if valid, else error message.