validateText method

String? validateText(
  1. String value
)

Implementation

String? validateText(String value) {
  if (value.isEmpty) return " Please Enter your Name";
  if (value.length <= 10) {
    return "Atleast 2 characters!";
  }
  if (value.length >= 500) {
    return "Below 50 characters!";
  }
  return null;
}