How to show validate message in NyTextField when submit form

[letieu]

How to validate form before submit and show message if fail for form with NyTextField

[agordn52]

Hi @letieu,

You can do the below:

TextEditingController _textEditingController = TextEditingController();
  
@override
Widget build(BuildContext context) {
  return Scaffold(
    body: SafeArea(
       child: Container(
         child: NyTextField(
             controller: _textEditingController, 
             validationRules: "not_empty|postcode_uk",
             validationErrorMessage: "Data is not valid"
         ),
       ),
    ),
  );
}

Read the docs here to learn more.