如何在Angular中使用$ location.path重定向？

Question

我主要担心的是这个控制器的结束。在$ scope.navigate函数中。基本上我想通过搜索arg.item_type ==“DEAL”或arg.item_type ==“EVENT”等来查看“商品”的类型。我的问题与$ location.path有关。我不知道如何在Angular中使用$ location.path重定向。因某些原因不起作用。

在控制台中，它说“$ location未在Scope。$ scope.navigate中定义”

任何人都有任何想法如何运作？感谢

// BUDGET PROFILE
// A simple controller that fetches a list of data from a service
.controller('BudgetIndexCtrl', function($scope, $stateParams, $ionicLoading, BudgetService) {
        console.log($stateParams);
        var loading = $ionicLoading.show({
                                         content: 'Loading...',
                                         showBackdrop: true,
                                         maxWidth: 200,
                                         showDelay: 500
                                         });


        $scope.offers = BudgetService.get($stateParams);
        console.log($scope.offers);
        loading.hide();

        // this function is done to look for the TYPE of 'offer'
        $scope.navigate = function(arg) {

        if (arg.item_type == "DEAL") {
            $location.path("/tab/deals/" + arg.id);
            $scope.$apply();
        }

        if (arg.item_type == "EVENT") {
            $location.path("/tab/events/" + arg.id);
            $scope.$apply();
        }

        if (arg.item_type == "ATTRACTION") {
            $location.path("/tab/attractions/" + arg.id);
            $scope.$apply();
        }

        //console.log(arg);
        };

        })