javascript - 不是函数时的自定义路由提供程序

Question

这是今天早上问题的更新版本。

我有两个独立的模块，“管理”和“授权”。在提供程序授权 block 中，我扩展了 $routeProvider 以便将相同的路由附加到所有路由定义。

首先，这是 admin.js:

angular.module('authorization', [])
    .provider('$appRoute', function () {
        this.$get = function($routeProvider) {
            var universalResolves = {authorize: function($authorization) {
                    return $authorization.authorize();
                }};

            var extendedRouter = angular.extend({}, $routeProvider, {
                when: function(path, route) {
                    route.resolve = (route.resolve) ? route.resolve : {};
                    angular.extend(route.resolve, universalResolves);
                    $routeProvider.when(path, route);
                    return this;
                }
            });

            return new extendedRouter();
        }
    })
    .factory('$authorization', ['$http', '$location', function($http, $location) {

        var $authorization = {};

        $authorization.authorize = function() {

            var path = $location.path();

            return promise = $http.get('/svc/authorize/view?urlPath=' + path).then(function(response) {
                var data = response.data;
                if (response.data.result === 'NOT_AUTHORIZED') {
                    throw "NOT_AUTHORIZED";
                }

                return data;
            });

        };

        return $authorization;
    }]);

接下来，我的管理模块:

angular.module('admin', ['ngRoute', 'ngSanitize', 'ngCsv'
        , 'authorization'
    ])

    .controller('mainCtrl', function() {

    })
    .config(['$routeProvider', '$appRouteProvider', function($routeProvider, $appRouteProvider) {

        // old definition that needs to be changed to $appRouteProvider
        $routeProvider.when('/login', {
            templateUrl: '/login/auth.html',
            controller: 'loginCtrl'
        });

        $appRouteProvider.when('/page', {
            templateUrl: 'page.tmpl.html',
            controller: 'pageCtrl'
        });

不幸的是，我收到以下错误:

Error: [$injector:modulerr] Failed to instantiate module app due to:
$appRouteProvider.when is not a function
@https://localhost:8443/admin.js:87:9
invoke@https://localhost:8443/js/angular/angular.js:4718:16
runInvokeQueue@https://localhost:8443/js/angular/angular.js:4611:11
loadModules/<@https://localhost:8443/js/angular/angular.js:4620:11
forEach@https://localhost:8443/js/angular/angular.js:321:11
loadModules@https://localhost:8443/js/angular/angular.js:4601:5
loadModules/<@https://localhost:8443/js/angular/angular.js:4618:40
forEach@https://localhost:8443/js/angular/angular.js:321:11
loadModules@https://localhost:8443/js/angular/angular.js:4601:5
createInjector@https://localhost:8443/js/angular/angular.js:4523:19
doBootstrap@https://localhost:8443/js/angular/angular.js:1758:20
bootstrap@https://localhost:8443/js/angular/angular.js:1779:12
angularInit@https://localhost:8443/js/angular/angular.js:1664:5
@https://localhost:8443/js/angular/angular.js:31763:5
j@https://localhost:8443/js/jquery/jquery.min.js:2:29566
g/</k<@https://localhost:8443/js/jquery/jquery.min.js:2:29882

所以它看到了 $appRouteProvider，但只有 this.$get() 方法。谁能帮忙？

Answer 1

就错误而言，$appRoute 提供程序没有在其自身上公开任何方法($get 除外)。所以它是一个空的 api 配置提供程序对象。

当使用基本提供者配方时，$get 方法用于提供生成服务的函数，this 来自provider 用于绑定(bind)额外的配置函数以放置 $get 函数稍后可以使用的数据。

来自 Angular provider docs :

myApp.provider('unicornLauncher', function UnicornLauncherProvider() {
  var useTinfoilShielding = false;

  // provider config api method.
  this.useTinfoilShielding = function(value) {
    useTinfoilShielding = !!value;
  };

  this.$get = ["apiToken", function unicornLauncherFactory(apiToken) {

    // let's assume that the UnicornLauncher constructor was also changed to
    // accept and use the useTinfoilShielding argument
    return new UnicornLauncher(apiToken, useTinfoilShielding);
  }];
});

如果你想在提供者上添加额外的方法，你可以使用 this.when = ... 或 Angular.extends(this, ....)例如。