Kingkor Roy Tirtho
65 lines
1.7 KiB
Dart
65 lines
1.7 KiB
Dart
import 'dart:math';
|
|
|
|
import 'package:fl_query/fl_query.dart';
|
|
import 'package:flutter/material.dart';
|
|
|
|
final queryVariableKeyJob =
|
|
QueryJob.withVariableKey<String, void>(task: (queryKey, externalData) {
|
|
return Future.delayed(
|
|
const Duration(milliseconds: 500),
|
|
() => "QueryKey:${queryKey.split("#").last}",
|
|
);
|
|
});
|
|
|
|
class QueryVariableKeyExample extends StatefulWidget {
|
|
const QueryVariableKeyExample({Key? key}) : super(key: key);
|
|
|
|
@override
|
|
State<QueryVariableKeyExample> createState() =>
|
|
_QueryVariableKeyExampleState();
|
|
}
|
|
|
|
class _QueryVariableKeyExampleState extends State<QueryVariableKeyExample> {
|
|
late double id;
|
|
@override
|
|
void initState() {
|
|
super.initState();
|
|
id = Random().nextDouble() * 200;
|
|
}
|
|
|
|
@override
|
|
Widget build(BuildContext context) {
|
|
return Column(
|
|
crossAxisAlignment: CrossAxisAlignment.start,
|
|
children: [
|
|
Text(
|
|
"# Query Variable Example",
|
|
style: Theme.of(context).textTheme.headline5,
|
|
),
|
|
QueryBuilder<String, void>(
|
|
job: queryVariableKeyJob("variable-query#$id"),
|
|
externalData: null,
|
|
builder: (context, query) {
|
|
if (query.isLoading || query.isRefetching || !query.hasData) {
|
|
return const CircularProgressIndicator();
|
|
}
|
|
return Row(
|
|
children: [
|
|
Text("Query Result: ${query.data}"),
|
|
ElevatedButton(
|
|
child: const Text("New Id"),
|
|
onPressed: () {
|
|
setState(() {
|
|
id = Random().nextDouble() * 200;
|
|
});
|
|
},
|
|
),
|
|
],
|
|
);
|
|
},
|
|
),
|
|
],
|
|
);
|
|
}
|
|
}
|