getData method
Retrieves data from a specified node path in the database.
The nodePath
specifies the path within the database from which data is to be fetched.
Returns the data as an Object
if the path exists and has data; otherwise, returns null.
Implementation
Future<Object?> getData(String nodePath) async {
Object? _val = {};
await database.ref(nodePath).once().then((event) {
var data = event.snapshot.value;
_val = data;
});
return _val;
}