如何访问$ http.post成功应用的功能？

Question

单击按钮时触发了此功能。

.controller('Formctrl', function($scope, ichrisLayoutLeavebalanceService){
    $scope.listRowSelected = function (list, item) {   
       var det = { detnumber: item.detnumber };
       ichrisLayoutLeavebalanceService.callPost(det).success(function (data){ ichrisLayoutLeavebalanceService.leaveBalanceProcess(); });
    };
});

然而，似乎我无法访问leaveBalanceProcess（）。看起来只有工厂部件可以共享。这是我的控制器和工厂代码，可以通过上面的代码访问。

.directive(/*code... code...*/{/*code... long code...*/
   /*code... code...*/},
   controller : ($scope, ichrisLayoutLeavebalanceService) {

     function par(){
     //code... code...
     }
     $scope.leaveBalanceProcess = function (){/*codes... codes... */}

     $scope.build = function () {
         ichrisLayoutLeavebalanceService.callPost(par()).success(function (data) { $scope.leaveBalanceProcess(data) });
     }

     $scope.build();
   }
})
.factory('ichrisLayoutLeavebalanceService', ['$http', function ($http) {

    var leaveBalanceService = {};

    leaveBalanceService.callPost = function (par) {
        return $http.post('/api/values/entries/LeaveBalanceEntries', par);
    }

    return leaveBalanceService;

}]）;

那么我现在如何访问整个控制器？