on<T extends TextXValidationRule> static method

void on<T extends TextXValidationRule>(
  1. String func(
    1. TextXValidationRule
    )
)

Registers a translation function for a specific TextXValidationRule type. This allows customizing the error message for each validation rule type.

Implementation

static void on<T extends TextXValidationRule>(
  String Function(TextXValidationRule) func,
) =>
    _map[T.toString()] = func;