在 RESTAdapter 初始化后添加标头 [英] Adding headers after RESTAdapter initialization

问题描述

我正在尝试在适配器初始化和使用后将 Authorization 标头添加到我的适配器请求中.我可以在创建 ApplicationAdapter 时以静态方式添加标头，但我似乎无法让它在后续 REST 调用中使用标头.我正在尝试这个:

I am trying to add an Authorization header to my adapter's request after the adapter has been initialized and used. I can add headers in a static way at the time I create my ApplicationAdapter, but I can't seem to get it use the headers in subsequent REST calls. I am trying this:

var auth= "Basic " + hash;
App.ApplicationAdapter.reopen({
    headers: {
        Authorization: auth
    }
});

我在ajax方法中调试了RESTAdapter，对adapter.headers的测试总是undefined.

I have debugged RESTAdapter in the ajax method, and the test for adapter.headers is always undefined.

推荐答案

接受的答案没有解决推荐方法在 ember-data 中不起作用的事实.我说推荐因为:

The accepted answer doesn't address the fact that the recommended approach is not working in ember-data. I say recommended since:

https://github.com/emberjs/data/blob/master/packages/ember-data/lib/adapters/rest_adapter.js#L88

https://github.com/emberjs/data/blob/master/packages/ember-data/lib/adapters/rest_adapter.js#L162以及该文件中的其他位置.

https://github.com/emberjs/data/blob/master/packages/ember-data/lib/adapters/rest_adapter.js#L162 and other places in that file.

此外，OP 提出的未定义问题具体发生在这里:https://github.com/emberjs/data/blob/master/packages/ember-data/lib/adapters/rest_adapter.js#L619

Further, the issue the OP brings up with of undefined specifically happens here: https://github.com/emberjs/data/blob/master/packages/ember-data/lib/adapters/rest_adapter.js#L619

因此，以下根本不起作用:

So, the following simply does not work:

App.ApplicationAdapter.reopen({
  headers: {token: 'reopen_token (NO WORK)' }
});

我试图指出这是一个问题，但它在一个小时内关闭了:https://github.com/emberjs/data/issues/1820

I've tried to point to this out as an issue but it got closed within an hour: https://github.com/emberjs/data/issues/1820

希望核心将决定修复此问题或删除评论.但是，是的，现在看来您必须劫持 jQuery ajax 设置 Ember.$.ajaxPrefilter，或者自己覆盖适配器上的 ajax.

Hopefully core will decide to either fix this or remove the comments. But, yes, for now it seems you have to hijack jQuery ajax setup, Ember.$.ajaxPrefilter, or override the ajax on the adapter yourself.

所以在从 Ember 开发者那里得到更多反馈之后，看起来这个问题的核心是试图重新打开一个已经创建的实例.因此，在定义时使用计算机属性(因此它将根据需要进行更新)似乎是建议的方法.希望有所帮助(最近合并的拉取请求在引用文件的注释中更加明显:https://github.com/emberjs/data/pull/1818/files#diff-1d7f5a5b77898df15de501c3c38d4829R108 )

So after getting some more feedback from Ember devs, it looks like the core of this issue is trying to reopen an instance already created. So using a computered property when it's defined (so it will update as desired) seems to be the advised approach. Hope that helps (there's a recently merged pull request that makes this more obvious in the comments of referenced file:https://github.com/emberjs/data/pull/1818/files#diff-1d7f5a5b77898df15de501c3c38d4829R108 )

编辑 2: 在我的应用程序中使用此功能，因此这里是代码，以防其他人卡住:

EDIT 2: Got this working in my app so here's the code in case someone else gets stuck:

//app.js
App.ApplicationAdapter = DS.ActiveModelAdapter.extend({
  namespace: 'api/v1',
  headers: function() {
    return {
      token: this.get('App.authToken') || localStorage.getItem('token')
    };
  }.property("App.authToken")
});

//login-controller.js (only action shown..assume `data` has user/pass)
  actions: {
    login: function() {
        $.post('/token/', data).done(function(user) {
          App.set('authToken', user.token);
          //Above will trigger adapters's header computed property to update

          // Transition to previous attempted route
          var attemptedTransition = self.get('attemptedTransition');
          if(attemptedTransition) {
            attemptedTransition.retry();
          }
          else {
            self.transitionToRoute('yourapproute');
          }
        })
        .fail(function(response) { 
          //fail handling omitted
        });

这篇关于在 RESTAdapter 初始化后添加标头的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！