Depended queries support added

2022-06-22 17:56:24 +06:00
parent 8c53f1b0fe
commit 73711ee77d
10 changed files with 234 additions and 127 deletions
@@ -0,0 +1,36 @@
+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!);
+        },
+      ),
+    );
+  }
+}