course details changes done

Apollo/assets/js/controllers/callTrackingCtrl.js

@@ -294,7 +294,9 @@ app.controller('callTrackingCtrl2', ["$scope","$rootScope","toaster", "$filter",
         };
         $rootScope.loadFollowupDetails(localStorage.getItem('trackID'));
     };
-
+    /*
+    * used to get tracking list
+    * */
     $rootScope.next = function(trackID){
         $scope.ListOfTracks=JSON.parse(localStorage.getItem('trackingList'));
 
@@ -315,6 +317,33 @@ app.controller('callTrackingCtrl2', ["$scope","$rootScope","toaster", "$filter",
        });
     }
 
+    /*
+    * get previous tracking id
+    * */
+
+    $rootScope.previous = function(trackID){
+        $scope.ListOfTracksForPre=JSON.parse(localStorage.getItem('trackingList'));
+
+        angular.forEach($scope.ListOfTracksForPre,function (value,key) {
+
+            if(value.TrackingID==trackID){
+                $scope.prevTrack=$scope.ListOfTracksForPre[key-1];
+                if($scope.prevTrack!='' && $scope.prevTrack!=undefined){
+                    $rootScope.loadFollowupDetails($scope.prevTrack.TrackingID);
+
+                }
+                else{
+                    console.log($scope.ListOfTracksForPre.length);
+                    $rootScope.loadFollowupDetails($scope.ListOfTracksForPre[$scope.ListOfTracksForPre.length-1].TrackingID);
+                }
+
+            }
+
+        });
+    }
+
+
+
 
     /*
     * update the follow up details