使用 $scope acces Angular 重用函数

Question

我正在解决在两个控制器中通过范围访问重用相同函数的问题在这里描述： How to include/inject functions which use $scope into a controller in angularjs?

在控制器中：

new CommonService($scope).getSomethingFromDB();

在工厂：

services.factory("CommonService", function (DBService) {

function Factory ($scope) {

    this.$scope = $scope;
}

Factory.prototype.getSomethingFromDB = function () {
    if( angular.isUndefined(this.$scope.vrsteObracuna) || this.$scope.vrsteObracuna === null) {

        this.$scope.loading = true;
        DBService.getSomethingFromDB(
            function success(data) {
                this.$scope.loading = false; //ERROR !!!
                this.$scope.vrsteObracuna = data;
            },
            function error(data, status, headers, config) {
                this.$scope.loading = false;
                etna.notifications.error("Error fetching!");
            }
        )
    }

    return this.$scope.vrsteObracuna;
}

return Factory;
});

问题是 DBService.getSomethingFromDB 成功回调后 this.$scope.loading 未定义？

Answer 1

您还没有将 $scope 放入 "success" 闭包中，请尝试使用此代码：

services.factory("CommonService", function (DBService) {

function Factory ($scope) {

    this.$scope = $scope;
}

Factory.prototype.getSomethingFromDB = function () {
    if( angular.isUndefined(this.$scope.vrsteObracuna) || this.$scope.vrsteObracuna === null) {

        this.$scope.loading = true;
        var that = this;
        DBService.getSomethingFromDB(
            function success(data) {
                that.$scope.loading = false; //ERROR !!!
                that.$scope.vrsteObracuna = data;
            },
            function error(data, status, headers, config) {
                that.$scope.loading = false;
                etna.notifications.error("Error fetching!");
            }
        )
    }

    return this.$scope.vrsteObracuna;
}

return Factory;
});

使用 $scope acces Angular 重用函数

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