AngularJS routeProvider 控制器中的依赖注入解析

Question

注入 resolve 的 return 对象，应该注入到控制器中，但事实并非如此。我正在使用一个承诺，以便控制器在承诺得到解决之前不会实例化，因为我正在使用 $http 服务执行 HTTP POST。

我也在使用 $location.path 根据响应数据进行一些重定向。第一条路由将使用它获得的数据重定向到 template1 路由。

$routeProvider
    .when("/auth/:id", amd.route(
    {   
        controller: 'eventController',
        controllerUrl: 'app/controllers/eventController',
        resolve: {
            returnedData: ['$http', '$location', '$route', '$q', function ($http, $location, $route, $q) {
                var id = $route.current.params.id;
                var defer = $q.defer();
                $http({
                    method: 'POST',
                    url: 'http://domain/service/webapi',
                    data: { 'name': id }
                }).then(function (response) {
                    var template = "/template".concat(response.data.displayLayout);
                    defer.resolve(response.data);
                    $location.path(template);
                    return defer.promise;
                });
            }]
        }
    }))
    .when("/template1", amd.route(
    {
        templateUrl: 'views/templates/template1.html',
        controller: 'eventController',
        controllerUrl: 'app/controllers/eventController',
    }));

app.controller('eventController', ['$scope', '$routeParams', '$timeout', 'returnedData',
    function ($scope, $routeParams, $timeout, returnedData) {
        // ...controller code here: $scope.returnedData = returnedData
});

我收到 AngularJS 错误：

Error: $injector:unpr Unknown Provider

对此有什么想法吗？

Answer 1

在AngularJSAPI页面，关于routeProvider(https://docs.angularjs.org/api/ngRoute/provider/$routeProvider)

你可以看到：

resolve - {Object.=} ... If any of these dependencies are promises, the router will wait for them all to be resolved or one to be rejected before the controller is instantiated

您应该像下面这样编辑您的代码：

var id = $route.current.params.id;
var defer = $q.defer();
$http({
    method: 'POST',
    url: 'http://domain/service/webapi',
    data: { 'name': id }
}).then(function (response) {
    var template = "/template".concat(response.data.displayLayout);
    defer.resolve(response.data);
    $location.path(template);
});
// return the promise outside `then` method, then angularjs will wait it `resolve`
return defer.promise;

此外，请注意：

Be aware that ngRoute.$routeParams will still refer to the previous route within these resolve functions. Use $route.current.params to access the new route parameters, instead.

Answer 2

使用 ng-route 的依赖注入，我的解决方案：

var myApp = angular.module("myApp", ["ngRoute", "localytics.directives"]);

myApp.config(['$routeProvider',function ($routeProvider) {

    $routeProvider
        .when("/", {
            templateUrl: "//TimeLine.html",
            controller: "MainCtrl"
        })    
        .when("/AddOrEditOccasion", {
            templateUrl: "/Html/GiftWhiz/AddOrEditOccasion.html",
            controller: "AddOrEditOccasionCtrl"
        })
        .when("/OccasionStart", {
            templateUrl: "/OccasionStart.html",
            controller: "OccasionStartCtrl"
        })        
}]);


myApp.controller("MainCtrl", ['$scope', '$http', '$location', function ($scope, $http, $location) {

   //your codes

}]);

AngularJS routeProvider 控制器中的依赖注入解析

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