在注射服务的app.config [英] Inject service in app.config

问题描述

欲注入一个服务成的app.config，以便可在控制器被调用之前被检索的数据。我想这样的：

I want to inject a service into app.config, so that data can be retrieved before the controller is called. I tried it like this:

服务：

app.service('dbService', function() {
    return {
        getData: function($q, $http) {
            var defer = $q.defer();
            $http.get('db.php/score/getData').success(function(data) {
                defer.resolve(data);            
            });
            return defer.promise;
        }
    };
});

配置：

app.config(function ($routeProvider, dbService) {
    $routeProvider
        .when('/',
        {
            templateUrl: "partials/editor.html",
            controller: "AppCtrl",
            resolve: {
                data: dbService.getData(),
            }
        })
});

但我得到这个错误：

But I get this error:

错误：未知提供商：从EditorApp dbService

Error: Unknown provider: dbService from EditorApp

如何正确的设置，并注入这项服务？

How to correct setup and inject this service?

推荐答案

亚历克斯规定不能够做你想要做什么，所以+1正确的原因。但你是因为你没有使用相当结算时他们是如何设计遇到此问题。

Alex provided the correct reason for not being able to do what you're trying to do, so +1. But you are encountering this issue because you're not quite using resolves how they're designed.

决心它可以是一个服务或返回值的函数的字符串被注入。既然你做了后者，你需要在实际的功能来传递：

resolve takes either the string of a service or a function returning a value to be injected. Since you're doing the latter, you need to pass in an actual function:

resolve: {
  data: function (dbService) {
    return dbService.getData();
  }
}

在框架去解决数据，它会注入 dbService 进入功能，使您可以自由使用它。你并不需要注入配置块都做到这一点。

When the framework goes to resolve data, it will inject the dbService into the function so you can freely use it. You don't need to inject into the config block at all to accomplish this.

个饱！

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