dni_nie_validator

Description:

dni nie validator

dni_nie_validator #
Validate if the DNI or NIE entered is valid in format and calculate the corresponding letter.
Getting Started #
To use the package you have to import it this way:
import 'package:dni_nie_validator/dni_nie_validator.dart';

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Example #
This example shows a Textfield to write the document number and a FAB to validate the document number.
The validateDocument method uses the extension functions to validate the text entered in the Textfield. The application will display a Snackbar with the result of the validation.
import 'package:flutter/material.dart';
import 'package:dni_nie_validator/dni_nie_validator.dart';

void main() {
runApp(MyApp());
}

class MyApp extends StatelessWidget {
// This widget is the root of your application.
@override
Widget build(BuildContext context) {
return MaterialApp(
debugShowCheckedModeBanner: false,
title: 'DNI/NIE validator',
theme: ThemeData(
primarySwatch: Colors.blue,
visualDensity: VisualDensity.adaptivePlatformDensity,
),
home: MyHomePage(title: 'DNI/NIE validator'),
);
}
}

class MyHomePage extends StatefulWidget {
MyHomePage({Key key, this.title}) : super(key: key);

final String title;

@override
_MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
// Create a text controller and use it to retrieve the current value
// of the TextField.
final myController = TextEditingController();
// Create a global key for your scaffold
final GlobalKey<ScaffoldState> _scaffoldKey = new GlobalKey<ScaffoldState>();

@override
void dispose() {
// Clean up the controller when the widget is disposed.
myController.dispose();
super.dispose();
}

@override
Widget build(BuildContext context) {
return Scaffold(
key: _scaffoldKey,
appBar: AppBar(
title: Text(widget.title),
),
body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Text(
'DNI/NIE Validator',
style: TextStyle(
fontWeight: FontWeight.bold,
fontSize: 20,
),
),
SizedBox(
height: 10,
),
Padding(
padding: const EdgeInsets.all(16.0),
child: TextField(
controller: myController,
decoration: InputDecoration(
border: OutlineInputBorder(
borderSide: new BorderSide(color: Colors.teal)),
hintText: 'Enter a document number',
labelText: 'DNI/NIE number',
prefixIcon: const Icon(
Icons.article_outlined,
color: Colors.blue,
),
),
),
)
],
),
),
floatingActionButton: FloatingActionButton(
onPressed: () {
_validateDocument(myController.text);
},
child: Icon(Icons.check),
backgroundColor: Colors.blue,
),
);
}

void _validateDocument(String value) {
String _validation = '';
if (value.isValidDNI()) {
_validation = 'DNI Valid';
} else if (value.isValidNIE()) {
_validation = 'NIE Valid';
} else {
_validation = 'Invalid document';
}

_scaffoldKey.currentState.showSnackBar(SnackBar(
content: Text('$_validation'),
action: SnackBarAction(
label: 'Accept',
onPressed: () {},
),
));
}
}
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If you prefer you can download the example of the previous code from here.