Merge pull request #27 from udos86/v7.2.1

v7.2.1

CHANGELOG.md

@@ -1,3 +1,7 @@
+## [7.2.1] - 06/12/2022
+
+* resets `FastFormArray` properly 
+
 ## [7.2.0] - 06/11/2022
 
 * adds new `FastFormArray` widget (see [example](https://github.com/udos86/flutter-fast-forms/blob/master/example/lib/main.dart#L120) for usage and implementing [`FastFormArray` items](https://github.com/udos86/flutter-fast-forms/blob/master/example/lib/form_array_item.dart))

lib/src/form_array.dart

@@ -46,12 +46,13 @@ class FastFormArrayState<T> extends FastFormFieldState<List<T?>> {
   @override
   void initState() {
     super.initState();
+    _initKeys();
+  }
 
-    if (widget.initialValue != null) {
-      for (var index = 0; index < widget.initialValue!.length; index++) {
-        _keys.add(UniqueKey());
-      }
-    }
+  @override
+  void onReset() {
+    super.onReset();
+    _initKeys();
   }
 
   void didItemChange(int index, T? value) {
@@ -95,6 +96,15 @@ class FastFormArrayState<T> extends FastFormFieldState<List<T?>> {
       didChange(newValue);
     }
   }
+
+  void _initKeys() {
+    if (_keys.isNotEmpty) _keys.clear();
+    if (widget.initialValue != null) {
+      for (var index = 0; index < widget.initialValue!.length; index++) {
+        _keys.add(UniqueKey());
+      }
+    }
+  }
 }
 
 Widget formArrayBuilder<T>(FormFieldState<List<T?>> field) {

pubspec.yaml

@@ -1,6 +1,6 @@
 name: flutter_fast_forms
 description: Flutter Fast Forms is the only Dart package you'll ever need to build Flutter forms fast.
-version: 7.2.0
+version: 7.2.1
 repository: https://github.com/udos86/flutter-fast-forms
 
 environment:

test/form_array_test.dart

@@ -191,4 +191,39 @@ void main() {
         .elementAt(newIndex);
     expect(itemState.counter, testValue);
   });
+
+  testWidgets('resets FastFormArray', (WidgetTester tester) async {
+    final formKey = GlobalKey<FormState>();
+    const initialValue = [0, 42, 99];
+
+    await tester.pumpWidget(buildMaterialTestApp(
+      FastFormArray<int>(
+        name: 'form_array',
+        initialValue: initialValue,
+        itemBuilder: (key, index, field) => TestItem(key, index, field),
+      ),
+      formKey: formKey,
+    ));
+
+    final state = tester.state<FastFormArrayState<int>>(
+        find.byType(typeOf<FastFormArray<int>>()));
+    const testValue = 1001;
+
+    state.didItemChange(initialValue.indexOf(initialValue.first), testValue);
+    state.remove(initialValue.indexOf(initialValue.last));
+
+    await tester.pumpAndSettle();
+    expect(find.byType(TestItem), findsNWidgets(state.value!.length));
+    expect(state.value, [
+      testValue,
+      ...[...initialValue]
+        ..remove(initialValue.first)
+        ..remove(initialValue.last)
+    ]);
+
+    formKey.currentState?.reset();
+    await tester.pumpAndSettle();
+    expect(find.byType(TestItem), findsNWidgets(initialValue.length));
+    expect(state.value, [...initialValue]);
+  });
 }