Kingkor Roy Tirtho
81 lines
2.6 KiB
Dart
81 lines
2.6 KiB
Dart
import 'dart:math';
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import 'package:fl_query/fl_query.dart';
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import 'package:fl_query/fl_query_hooks.dart';
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import 'package:flutter/material.dart';
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import 'package:flutter_hooks/flutter_hooks.dart';
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final successHookJob = QueryJob<String, void>(
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queryKey: "greetings-hook-example",
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task: (queryKey, _) => Future.delayed(
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const Duration(seconds: 2),
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() =>
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"The work successfully executed. Data: key=($queryKey) value=${Random.secure().nextInt(100)}",
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),
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);
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final canFailHookJob = QueryJob<String, void>(
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queryKey: "failure-hook-example",
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task: (queryKey, _) => Random().nextBool()
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? Future.error("$queryKey operation failed for unknown reason")
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: Future.value(
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"Successful execution. Result: $queryKey=${Random().nextInt(100)}",
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),
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);
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class BasicHookQueryExample extends HookWidget {
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const BasicHookQueryExample({Key? key}) : super(key: key);
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@override
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Widget build(BuildContext context) {
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final successQuery = useQuery(job: successHookJob, externalData: null);
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final canFailQuery = useQuery(job: canFailHookJob, externalData: null);
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return Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Text(
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"# Basic Query Hook Example",
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style: Theme.of(context).textTheme.headline5,
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),
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!successQuery.hasData ||
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successQuery.isLoading ||
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successQuery.isRefetching
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? const CircularProgressIndicator()
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: Row(
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children: [
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Text(successQuery.data!),
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ElevatedButton(
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child: const Text("Refetch"),
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onPressed: () async {
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await successQuery.refetch();
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},
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),
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],
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),
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!canFailQuery.hasData ||
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canFailQuery.isLoading ||
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canFailQuery.isRefetching
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? const CircularProgressIndicator()
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: Row(
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children: [
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if (canFailQuery.hasError)
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Text(
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"${canFailQuery.error}. Retrying: ${canFailQuery.retryAttempts}",
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),
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if (canFailQuery.hasData)
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Text(
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"Success after ${canFailQuery.retryAttempts}\nData: ${canFailQuery.data}",
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),
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ElevatedButton(
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child: const Text("Refetch"),
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onPressed: () async {
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await canFailQuery.refetch();
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},
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),
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],
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)
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],
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);
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}
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}
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