使用HTTP $自定义提供在内部配置的应用程序，angular.js [英] use $http inside custom provider in app config, angular.js

问题描述

主要的问题 - 这可能吗？我试过，没有运气..

The main question - is it possible? I tried with no luck..

主要app.js

...
var app = angular.module('myApp', ['services']);
app.config(['customProvider', function (customProvider) {

}]);
...

提供者本身

var services = angular.module('services', []);
services.provider('custom', function ($http) {
});

和我有这样的错误：

Uncaught Error: Unknown provider: $http from services 

任何想法？

谢谢！

推荐答案

• 您的无法的注入到服务提供商的配置栏目


• 您的 CAN 的注入服务成初始化提供者的服务的栏目

The bottom line is:

• You CANNOT inject a service into the provider configuration section.
• You CAN inject a service into the section which initializes the provider's service.

角框架有一个两阶段的初始化过程：

Angular framework has a 2 phase initialization process:

在配置阶段所有的供应商都被初始化，所有的配置部分被执行。在配置章节中可能包含code这配置提供的对象，因此他们可以与供应商对象注入。
然而，由于供应商是厂家为服务对象，并在这个阶段的供应商并不完全初始化/配置 - > 您不能要求供应商在这个阶段为您创建一个服务 - >在配置阶段，你无法使用/注射服务。
当这个阶段完成所有的供应商都准备就绪（完成配置阶段之后没有更多的供应商的配置可以做到）。

During the config phase all of the providers are initialized and all of the config sections are executed. The config sections may contain code which configures the provider objects and therefore they can be injected with provider objects. However, since the providers are the factories for the service objects and at this stage the providers are not fully initialized/configured -> you cannot ask the provider to create a service for you at this stage -> at the configuration stage you cannot use/inject services. When this phase is completed all of the providers are ready (no more provider configuration can be done after the configuration phase is completed).

在运行阶段所有的运行部分被执行。在这个阶段的的供应商准备就绪，可以创建服务 - > 运行阶段，你可以使用/注射服务中。

During run phase all the run sections are executed. At this stage the providers are ready and can create services -> during run phase you can use/inject services.

angular.module('myModule').provider('myProvider', function($http) {
    // SECTION 1: code to initialize/configure the PROVIDER goes here (executed during `config` phase)
    ...

    this.$get = function() {
        // code to initialize/configure the SERVICE goes here (executed during `run` stage)

        return myService;
    };
});

由于我们正在试图注入 $ HTTP 服务到这是在配置阶段执行的功能，我们会得到一个错误：

Since we are trying to inject the $http service into a function which is executed during the config phase we will get an error:

Uncaught Error: Unknown provider: $http from services 

这是什么错误实际上说的是 $ httpProvider 用来创建 $ HTTP 服务还没有准备好（因为我们仍然在配置阶段）。

What this error is actually saying is that the $httpProvider which is used to create the $http service is not ready yet (since we are still in the config phase).

angular.module('myModule').provider('myProvider', function() {
    // SECTION 1: code to initialize/configure the PROVIDER goes here (executed during `config` phase)
    ...

    this.$get = function($http) {
        // code to initialize/configure the SERVICE goes here (executed during `run` stage)

        return myService;
    };
});

由于我们现在注射服务到服务的初始化函数，这是在运行此相code将工作执行。

Since we are now injecting the service into the service initialization function, which is executed during run phase this code will work.

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