scope passed to service is not updating the view - angularjs

Question

This is an app that I took over from another developer. I have a controller that calls a function inside a service and it passes in the $scope of the controller as a parameter. THis exact same thing is done with another function in the service.
THe problem is that only one of these services seem to update the view.
Here is my code (very condensed to keep it short, or a short as possible)
var KrisisEventsApp = angular.module('KrisisEventsApp', []);
KrisisEventsApp.filter('unsafe', function ($sce) { return $sce.trustAsHtml; });
//Controller for registration
KrisisEventsApp.controller('RegistrationCtrl',
['$scope', 'RegistrationService', '$timeout',
function ($scope, RegistrationService, $timeout) {
$scope.SaveRegistrantData =
function () {
//save user input
RegistrationService.SaveRegistrationForm($scope);
};
$scope.Products_Continue =
function () {
RegistrationService.ListItemsForCart($scope);
};
}
]
);
KrisisEventsApp.service('RegistrationService',
['$http', function ($http) {
var thisService = this;
//injects custom properties into registration form
thisService.SaveRegistrationForm = function ($scope) {
this.count = 0;
this._scope = $scope;
// if no product are found, go straight to payment page
this.count = Object.keys($scope.products).length;
// console.log(this.count);
$http({
method: "POST",
url: v_ModulePath + "/API/Registrants_WebAPI/RegisterUser",
dataType: 'text/plain',
data: data,
headers: {
'Content-Type': 'text/plain',
'ModuleId': v_servicesFramework.getModuleId(),
'TabId': v_servicesFramework.getTabId(),
'RequestVerificationToken': v_servicesFramework.getAntiForgeryValue()
}
})
.then(function (response) {
data = JSON.parse(JSON.parse(response.data))
this.config2 = {
method: "GET",
url: v_ModulePath + "/API/Registrants_WebAPI/ListItemsForCart?idregistrant=" + $("#hid_registrant_id").val() + "&idevent=" + v_EventID,
dataType: 'text/plain',
data: '',
headers: {
'Content-Type': 'text/plain',
'ModuleId': v_servicesFramework.getModuleId(),
'TabId': v_servicesFramework.getTabId(),
'RequestVerificationToken': v_servicesFramework.getAntiForgeryValue()
}
}
return $http.get(v_ModulePath + "/API/Registrants_WebAPI/ListItemsForCart?idregistrant=" + $("#hid_registrant_id").val() + "&idevent=" + v_EventID, this.config2);
})
.then(function (response) {
data = JSON.parse(JSON.parse(response.data));
$scope.Cart = data;
});
}
//list cart items
thisService.ListItemsForCart = function ($scope) {
$http(
{
method: "GET",
url: v_ModulePath + "/API/Registrants_WebAPI/ListItemsForCart?idregistrant=" + $("#hid_registrant_id").val() + "&idevent=" + v_EventID,
dataType: 'text/plain',
data: '',
headers: {
'Content-Type': 'text/plain',
'ModuleId': v_servicesFramework.getModuleId(),
'TabId': v_servicesFramework.getTabId(),
'RequestVerificationToken': v_servicesFramework.getAntiForgeryValue()
}
}).success(function (data) {
data = JSON.parse(JSON.parse(data));
$scope.Cart = data;
}).error(function (data) {
});
}
}
]
);
Here is the view (portion):
...
<a ng-click="SaveRegistrantData()" class="small button success" id="but_InputForm_MoveNext">Continue</a>
...
<a ng-click="Products_Continue()" class="small button success">Continue</a>
...
<tbody>
<tr ng-repeat="CartItem in Cart.Cart_Items_List">
<td>{{ CartItem.Item_Description }}</td>
<td class="text-right">{{ CartItem.Item_Fee }}</td>
</tr>
<tr>
<td>Total to Pay</td>
<td class="text-right">{{ Cart.CartTotal }}</td>
</tr>
</tbody>
You can see that the SaveRegistrationForm and ListItemsForCart functions are called from the controller, which are in turn initiated by button clicks from the view.
NOTE:
the following lines are the important ones in each function:
data = JSON.parse(JSON.parse(response.data));
$scope.Cart = data;
PROBLEM:
Only the ListItemsForCart updates the view, when I run the SaveRegistrationForm function the view does not update.
I have used fiddler to examine the web api calls and both functions successfully return the same data.
I have also used the chrome console to confirm that the $scope.Cart object does in fact get assigned the right data.
QUESTION:
Can someone help me figure out why my view is not updating?

Answer 1

Okay, I inherited this app from another developer. They defined the controller with the same name twice in the html view. arrrrg. So the second set of data that was not updating was in the second instance of the controller.
Once I moved a single controller instance to wrap the whole view the problems all went away.
Thanks to all who helped. You would not have been able to tell this from the abbreviated view code I posted. (I also have many other things to update, like .success to then catch and like Satpal said: just returning promises from my services etc...)