checkIfLongerThan method Null safety

String? checkIfLongerThan(
  1. TextEditingController textEditingController,
  2. int minLength
)

Checks if the Value of a TextEditingController is longer than minLength.

Implementation

static String? checkIfLongerThan(
    TextEditingController textEditingController, int minLength) {
  final text = textEditingController.text;
  if (text.length < minLength) {
    return 'Mindestens ${minLength.toString()} Zeichen';
  }
  // return null if the text is valid
  return null;
}