Flutter ChangeNotifierProvider issue - flutter

Question

I have a ProperyListPage and on each list item clicked this is the action it does.
Navigator.push(
context,
MaterialPageRoute(
builder: (context) => ChangeNotifierProvider.value(
value: property,
child: PropertyPage(),
),
),
);
}
inside of PropertyPage I have BottomNavigationBar, when you click on Edit BottomNavigationBarItem then it goes to a PropertyEditTab like this
PropertyEditTab(),
inside of PropertyEditTab I have a Form widget like this
child: Form(
key: _formKey,
child: Column(
children: [
PropertyForm(
callback: saveProperty,
),
...
)...
My saveProperty callback looks like this
void saveProperty(BuildContext context) async {
if (_formKey.currentState.validate()) {
PropertyViewModel _propertyVM = Provider.of<PropertyViewModel>(context, listen: false);
savingProperty();
final isSaved = await _propertyVM.updateProperty();
if (isSaved) {
propertySaved();
} else {}
}
}
the updateProperty method does an update to Firestore like this
class PropertyViewModel extends ChangeNotifier {
...
Future<bool> updateProperty() async {
bool isSaved = false;
User user = _firebaseAuth.currentUser;
print(uid);
final property = Property(
user.email,
...
);
try {
await _firestore
.collection(Constants.propertyCollection)
.doc(property.uid)
.update(property.toMap());
isSaved = true;
} on Exception catch (e) {
print(e);
message = 'Property not saved.';
} catch (e) {
print(e);
message = 'Error occurred';
}
notifyListeners();
return isSaved;
}
...
}
then each one of my form fields look like this
FormTextField(
name: 'address_line_1',
hintText: 'Address Line 1',
initialValue: propertyVM.addressLine1 ?? '',
onChanged: (value) {
propertyVM.addressLine1 = value;
},
),
and this is my onPress of button to save property
ThemeButton(
text: 'Save Property',
buttonColor: Constants.kPrimaryColor,
textColor: Colors.white,
onPress: () => widget.callback(context),
),
the issue is that the original PropertyViewModel property isn't updating when notifyProviders() is called and I can't figure out what I am doing wrong.
Thanks in advance for the help.

Answer 1

we were writing on the slack channel.
I think the reason is because in the FormTextField widget change it to this:
FormTextField(
name: 'address_line_1',
hintText: 'Address Line 1',
initialValue: propertyVM.addressLine1 ?? '',
onChanged: (value) {
propertyVM.updateAdressLine(value);
},
),
And in your PropertyViewModel make a function
void updateAdressLine() {
adressLine1 = value;
notifyListeners();
}
It's because from your FormTextField you are only changing the value. You need pack the changes in a method so you can change the value and notifyListeners at one time.