Unable to upload data to firebase realtime database from my flutter application - firebase

Question

I am trying to add a module in my flutter project where users will be able to upload their addresses from. I'm using a http package for this. On saving the data, however, only an empty string is being uploaded onto the database.
Here's my code:
This is the validator code from the text form editing field:
validator: (value) {
if (value!.isEmpty) {
return 'Please enter a description.';
}
if (value.length < 10) {
return 'Should be at least 10 characters long.';
}
return null;
},
onSaved: (value) {
addressEditingController.text = value!;
_editedAddress = Address(address: value);
},
),
),
IconButton(onPressed:(){
if(_form.currentState!.validate()){
uploadAddress();
Here is the uploadAddress() function:
void uploadAddress() {
setState(() {
_editedAddress = Address(
address: _editedAddress.address);
});
Provider.of<addAddress>(context, listen: false)
.addProduct(_editedAddress)
.catchError((error) {
return showDialog(
context: context,
builder: (ctx) => AlertDialog(
title: Text("An error occurred"),
content: Text(error.toString()),
actions: <Widget>[
TextButton(
onPressed: () {
Navigator.of(ctx).pop();
},
child: Text("Okay"))
],
));
}).then((_) {
setState(() {
_isLoading = false;
});
});
}
Here's the addProduct() function:
Future<void> addProduct(Address address) {
final url = Uri.https(
'internship-75b58-default-rtdb.firebaseio.com', '/addresses/${user!.phoneNumber}.json');
return http
.post(url,
body: json.encode({
'address':address.address,
}))
.then((response) {
final newProduct = Address(
address: address.address,);
notifyListeners();
}).catchError((error) {
print(error);
throw error;
});
}
Any help would be greatly appreciated:)