How to update the data constantly after using API in Getx Flutter? - flutter

Question

I have a getx controller and a method to update data in the database, I just wonder that how can I refresh of update the UI constantly after fetching the API? Here is my controller
class AdditionalContactController extends GetxController {
var additionalContactList = <AdditionalContact>[].obs;
var isLoading = true.obs;
UserController _userController = Get.find();
#override
void onInit() {
super.onInit();
_userController.getMail().then((value) async {
await _userController.getUser(value);
getAdditionalContacts(_userController.user.value.id);
});
}
//Update contact
Future<bool> updateContact({...}) async {
var response = await http.post(
Uri.parse(
"https://..."),
body: {
...
});
var jsonData = jsonDecode(response.body);
if (jsonData == "failed") {
return false;
}
return true;
}
}

Answer 1

you can use the ever worker to call a method that executes every time an Rx have assigned with a new value:
class AdditionalContactController extends GetxController {
var additionalContactList = <AdditionalContact>[].obs;
#override
void onInit() {
super.onInit();
ever(additionalContactList, methodToExecute)
});
}
methodToExecute(list) {
/* Code that will execute every time the additionalContactList changes */
}
now everytime additionalContactList is changed like as example if we assign a new List to it:
additionalContactList.value = [];
Then the methodToExecute() will be executed automatically, and will do every single time.