$scope.addActivity = function(){
        $http({
            method: 'POST',
            url: path,
            data: {"Name":$scope.activityName, "Description":$scope.activityDescription, "Cover":$scope.activityCover, "id":idt, "Date":$scope.activityDate}
        }).success(function(data){
                $scope.message = "Activity added successfully!";
                $location.path("/activity/"+idt);
            }).error(function(data, status, header, config){
                $scope.message = "Activity add error!"
            });
    };