Flutter, pass object to viewModel trigger recreating of the widget - flutter

Question

I would like to pass a model to a widget and his viewmodel.
I use this widget for 2 purposes: Add a new item and Edit the item.
So i will pass an empty object in case of new item and an already filled object in case of an edit.
Here i create a new post:
onTap: () {
Navigator.pop(context);
Navigator.of(context).push(
CupertinoPageRoute(
builder: (_) => CreatePost(PostPizza()),
),
).then((value) {
callback.call();
});
},
Here i set the post in the viewmodel:
class CreatePost extends StatefulWidget {
final PostPizza post;
#override
_CreatePostState createState() => _CreatePostState();
CreatePost(this.post);
}
class _CreatePostState extends State<CreatePost> {
#override
Widget build(BuildContext context) {
print("Create Post Widget build called");
PostsViewModel viewModel = Provider.of<PostsViewModel>(context);
viewModel.setPost(widget.post);
Setting the post object will trigger the text controllers :
acquaController.text = post.acqua ?? "";
saleController.text = post.acqua ?? "";
lievitoTipoController.text = post.lievito?.a ?? "";
lievitoAmountController.text = post.lievito?.b ?? "";
This will trigger the widget to rebuild continiously.
Any idea how can i solve the issue without all this?
This will

Answer 1

You can try this:
class _CreatePostState extends State<CreatePost> {
bool isSet = false, isLoading = true;
PostsViewModel? viewModel;
#override
Widget build(BuildContext context) {
print("Create Post Widget build called");
viewModel = Provider.of<PostsViewModel>(context);
if(isSet == false) {
isSet = true;
viewModel.setPost(widget.post);
isLoading = false;
}
return ....

Answer 2

Try to use this:
viewModel = Provider.of<PostsViewModel>(context, listen: false);
It will not perform rebuild.
Updated Answer, it will be called once:
#override
void initState() {
viewModel = Provider.of<PostsViewModel>(context, listen: false);
SchedulerBinding.instance.addPostFrameCallback((_) {
viewModel.setPost(widget.post);
});
super.initState();
}
#override
Widget build(BuildContext context) {
print("Create Post Widget build called");
/// Remove this:
/// PostsViewModel viewModel = Provider.of<PostsViewModel>(context);
/// viewModel.setPost(widget.post);
/// ...
}