I try to update an object in Flutter from a child widget. The object which I want to update was passed as param to the child. The problem: The object does not want to change. I work on a Stateful widget and update the state with setState, but nothing changes. Maybe you can find an error in my code.
My object
final guestbook = Guestbook({
title: "Test"
// ... some other parameters
})
The function where I pass the Guestbook object to the child widget
void _editGuestbook(Guestbook guestbook, BuildContext context) {
CupertinoScaffold.showCupertinoModalBottomSheet(
context: context,
builder: (BuildContext context, ScrollController scrollController) {
return EditGuestbook(
guestbook: guestbook, // Here I pass the object to the child
scrollController: scrollController,
);
}).then((value) {
setState(() {
guestbook = value;
});
});
}
On the next widget, I update some values in the database and want to change also my local object, so that the user can see that the updating was successfull. Therefore I pass the object with the updated values as argument back to the parent view.
final Guestbook guestbook;
......
........
// Update database
final gb = widget.guestbook;
setState(() {
updatedGuestbook = Guestbook(
title: "New title",
// ... some other parameters
});
await GuestbooksDatabase()
.updateGuestbook(guestbook: updatedGuestbook, key: gb.id)
.then((_) {
Get.back(result: updatedGuestbook); // Here I send data back to parent
});
And as you can see above after retrieving the new object I update the state with setState:
setState(() {
guestbook = value;
});
Bot nothing changes in the view. I always see the old state. If I pull to refresh to load the new entries directly from the database it updates. Is there a way to simply update the local object so that I don't need the additional server request?
