lengthValidate static method

dynamic lengthValidate({
  1. required dynamic text,
  2. required int length,
  3. required String fieldName,
})

Implementation

static dynamic lengthValidate(
    {required dynamic text, required int length, required String fieldName}) {
  return text == null || text.toString().trim() == ''
      ? "Please Enter $fieldName"
      : text.toString().length != length
          ? "Please enter a valid $fieldName"
          : null;
}