Improve most recent filter

lib/controllers/providers/api/device_transfer_provider.dart

@@ -74,10 +74,7 @@ class DeviceTransferProvider extends ChangeNotifier {
       body["pageSize"] = pageItemNumber;
       body.addAll(deviceTransferSearch.toMap());
 
-      response = await ApiManager.instance.post(
-        URLs.getDeviceTransfer,
-        body: body,
-      );
+      response = await ApiManager.instance.post(URLs.getDeviceTransfer, body: body);
 
       stateCode = response.statusCode;
       if (stateCode >= 200 && stateCode < 300) {
@@ -87,8 +84,7 @@ class DeviceTransferProvider extends ChangeNotifier {
         items ??= [];
         items.addAll(itemsPage.toSet().toList());
         sortMostRecent(items, deviceTransferSearch.mostRecent);
-
-        print(listJson);
+        notifyListeners();
         if (itemsPage.length == pageItemNumber) {
           nextPage = true;
         } else {

lib/controllers/providers/api/gas_refill_provider.dart

@@ -77,6 +77,7 @@ class GasRefillProvider extends ChangeNotifier {
       }
       items.addAll(itemsPage);
       sortMostRecent(items, mostRecent);
+      notifyListeners();
       if (itemsPage.length == pageItemNumber) {
         nextPage = true;
       } else {

lib/controllers/providers/api/regular_visits_provider.dart

@@ -13,7 +13,7 @@ import 'package:test_sa/models/visits/visits_search.dart';
 
 class RegularVisitsProvider extends ChangeNotifier {
   // number of items call in each request
-  final pageItemNumber = 20;
+  final pageItemNumber = 12;
 
   //reset provider data
   void reset() {
@@ -52,7 +52,7 @@ class RegularVisitsProvider extends ChangeNotifier {
   }) async {
     if (isLoading == true) return -2;
     isLoading = true;
-    if (visits == null) notifyListeners();
+    if (visits?.isEmpty ?? true) notifyListeners();
     Response response;
     //userId = 397.toString(); // testing id to view data
 
@@ -77,11 +77,12 @@ class RegularVisitsProvider extends ChangeNotifier {
       // client's request was successfully received
       try {
         List requestsListJson = json.decode(response.body)["data"];
-        List<Visit> _visits = requestsListJson.map((request) => Visit.fromJson(request)).toList();
-        visits ??= [];
-        sortMostRecent(_visits);
-        visits.addAll(_visits);
-        if (_visits.length == pageItemNumber) {
+        List<Visit> visits = requestsListJson.map((request) => Visit.fromJson(request)).toList();
+        this.visits ??= [];
+        this.visits.addAll(visits);
+        sortMostRecent(this.visits);
+        notifyListeners();
+        if (visits.length == pageItemNumber) {
           nextPage = true;
         } else {
           nextPage = false;

lib/controllers/providers/api/service_requests_provider.dart

@@ -57,7 +57,7 @@ class ServiceRequestsProvider extends ChangeNotifier {
   Future<int> getRequests({@required int hospitalId}) async {
     if (isLoading == true) return -2;
     isLoading = true;
-    if (serviceRequests == null) notifyListeners();
+    if (serviceRequests?.isEmpty ?? false) notifyListeners();
     Response response;
     try {
       Map<String, dynamic> body = {};
@@ -76,8 +76,9 @@ class ServiceRequestsProvider extends ChangeNotifier {
         List requestsListJson = json.decode(response.body)["data"];
         List<ServiceRequest> serviceRequestsPage = requestsListJson.map((request) => ServiceRequest.fromJson(request)).toList();
         serviceRequests ??= [];
-        sortMostRecent(serviceRequestsPage);
         serviceRequests.addAll(serviceRequestsPage);
+        sortMostRecent(serviceRequests);
+        notifyListeners();
         if (serviceRequestsPage.length == pageItemNumber) {
           nextPage = true;
         } else {