lib/service/controllers/location_controller.dart

@@ -26,6 +26,16 @@ class LocationController extends ChangeNotifier {
     return _repository.deleteLocation(location);
   }
 
+  Future<void> updateLocation(Location oldLocation, Location newLocation) {
+    final index = _locations.indexOf(oldLocation);
+    _locations.remove(oldLocation);
+    _locations.insert(index, newLocation);
+    notifyListeners();
+    return _repository
+        .deleteLocation(oldLocation)
+        .whenComplete(() => _repository.createLocation(newLocation));
+  }
+
   Future<void> _loadLocations() {
     _locations.clear();
     return _repository.loadLocations().then(