Kingkor Roy Tirtho
37 lines
1.2 KiB
Dart
37 lines
1.2 KiB
Dart
import 'package:example/main.dart';
|
|
import 'package:fl_query/fl_query.dart';
|
|
import 'package:flutter/material.dart';
|
|
|
|
final dependentQueryJob = QueryJob<String, void>(
|
|
queryKey: "dependent-query-job",
|
|
task: (queryKey, externalData, query) {
|
|
final successQuery =
|
|
query.dependOnQuery<String, void>(successJob, externalData: null);
|
|
final failedQuery =
|
|
query.dependOnQuery<String, void>(failedJob, externalData: null);
|
|
if (failedQuery.hasError) return failedQuery.error.toString();
|
|
if (successQuery.hasData) return successQuery.data!;
|
|
return "No data from success query yet";
|
|
});
|
|
|
|
class DependentQueryExample extends StatelessWidget {
|
|
const DependentQueryExample({Key? key}) : super(key: key);
|
|
|
|
@override
|
|
Widget build(BuildContext context) {
|
|
return Scaffold(
|
|
appBar: AppBar(),
|
|
body: QueryBuilder<String, void>(
|
|
job: dependentQueryJob,
|
|
externalData: null,
|
|
builder: (context, query) {
|
|
if (query.isLoading || query.isRefetching || !query.hasData) {
|
|
return const CircularProgressIndicator();
|
|
}
|
|
return Text(query.data!);
|
|
},
|
|
),
|
|
);
|
|
}
|
|
}
|