[go_router]Fixes the problem what pathParameters is null in redirect when the Router is recreated. (#5258)

fixes flutter/flutter#135761

Author: yiiim

packages/go_router/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 12.0.2
+
+- Fixes the problem that pathParameters is null in redirect when the Router is recreated.
+
 ## 12.0.1
 
 - Fixes deep-link with no path on cold start.

packages/go_router/lib/src/configuration.dart

@@ -495,17 +495,19 @@ class RouteConfiguration {
     final RouteBase route = match.route;
     FutureOr<String?> routeRedirectResult;
     if (route is GoRoute && route.redirect != null) {
+      final RouteMatchList effectiveMatchList =
+          match is ImperativeRouteMatch ? match.matches : matchList;
       routeRedirectResult = route.redirect!(
         context,
         GoRouterState(
           this,
-          uri: matchList.uri,
+          uri: effectiveMatchList.uri,
           matchedLocation: match.matchedLocation,
           name: route.name,
           path: route.path,
-          fullPath: matchList.fullPath,
-          extra: matchList.extra,
-          pathParameters: matchList.pathParameters,
+          fullPath: effectiveMatchList.fullPath,
+          extra: effectiveMatchList.extra,
+          pathParameters: effectiveMatchList.pathParameters,
           pageKey: match.pageKey,
         ),
       );

packages/go_router/pubspec.yaml

@@ -1,7 +1,7 @@
 name: go_router
 description: A declarative router for Flutter based on Navigation 2 supporting
   deep linking, data-driven routes and more
-version: 12.0.1
+version: 12.0.2
 repository: https://github.com/flutter/packages/tree/main/packages/go_router
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+go_router%22
 

packages/go_router/test/go_router_test.dart

@@ -5048,6 +5048,44 @@ void main() {
           expectedInitialRoute);
     });
   });
+
+  testWidgets(
+      'test the pathParameters in redirect when the Router is recreated',
+      (WidgetTester tester) async {
+    final GoRouter router = GoRouter(
+      initialLocation: '/foo',
+      routes: <RouteBase>[
+        GoRoute(
+          path: '/foo',
+          builder: dummy,
+          routes: <GoRoute>[
+            GoRoute(
+              path: ':id',
+              redirect: (_, GoRouterState state) {
+                expect(state.pathParameters['id'], isNotNull);
+                return null;
+              },
+              builder: dummy,
+            ),
+          ],
+        ),
+      ],
+    );
+    await tester.pumpWidget(
+      MaterialApp.router(
+        key: UniqueKey(),
+        routerConfig: router,
+      ),
+    );
+    router.push('/foo/123');
+    await tester.pump(); // wait reportRouteInformation
+    await tester.pumpWidget(
+      MaterialApp.router(
+        key: UniqueKey(),
+        routerConfig: router,
+      ),
+    );
+  });
 }
 
 class TestInheritedNotifier extends InheritedNotifier<ValueNotifier<String>> {