How can I add a new value to my text editcontroller in Text formfield?
问题 I have a database and retrieving my Data from firestore. class ProductProvider with ChangeNotifier { UserModel userModel; List<UserModel> userModelList = []; Future<void> getUserData() async { List<UserModel> newList = []; User currentUser = FirebaseAuth.instance.currentUser; QuerySnapshot userSnapshot = await FirebaseFirestore.instance .collection("Manufacturer-Accounts") .get(); userSnapshot.docs.forEach( (element) { if (currentUser.uid == element.data()['Manufacturer_ID']) { userModel =