快递如何返回格式良好的201？ [英] How can I return a well formatted 201 with Express?

问题描述

我正在使用 DS.RESTAdapter 使用ember-cli构建todoMVC，并表达以嘲笑呼叫。我得到的问题是，当我尝试保存一个新的todo我在控制台中看到这个错误：

I'm trying to build todoMVC with ember-cli using the DS.RESTAdapter and express to mock out the calls. The issue I'm getting is that when I try to save a new todo I see this error in the console:

SyntaxError: Unexpected end of input
    at Object.parse (native)
    at jQuery.parseJSON (http://localhost:4200/assets/vendor.js:8717:22)
    at ajaxConvert (http://localhost:4200/assets/vendor.js:9043:19)
    at done (http://localhost:4200/assets/vendor.js:9461:15)
    at XMLHttpRequest.jQuery.ajaxTransport.send.callback (http://localhost:4200/assets/vendor.js:9915:8)

$ b $我很确定的问题是，当我在新创建的模型上调用 save（）时，它正在向/正在回复的发送请求这样：

I'm pretty sure the issue is that when I call save() on the newly created model, it is sending a post request to / which express is replying to with this:

 todosRouter.post('/', function(req, res) {
    res.status(201).end();
  });

以下是Ember中创建todo的创建操作：

Here's the create action in Ember that's creating the todo:

actions:
    createTodo: ->
      return unless title = @get('newTitle')?.trim()

      @set('newTitle', '')
      @store.createRecord('todo',
        title: title
        isCompleted: false
      ).save()

任何帮助将不胜感激。我是新来表达，不知道为什么jquery不喜欢201它正在返回。

Any help would be greatly appreciated. I'm new to express and not sure why jquery doesn't like the 201 it is returning.

推荐答案

问题是它是尝试以 parseJSON 为空白的回复。它有效地执行 jQuery.parseJSON（''） - 如果您尝试运行它会产生错误。

The problem is it's trying to parseJSON on a blank response. It's effectively doing jQuery.parseJSON('') - which does produce an error if you try an run it.

要解决它，您可以返回任何可以解析为JSON的字符串 - 例如字符串 null 或空引号。

To resolve it you could return any string that can be parsed as JSON - e.g. the string null or empty quotes "".

todosRouter.post('/', function(req, res) {
  res.send('null');
  res.status(201).end();
});

todosRouter.post('/', function(req, res) {
  res.send('""');
  res.status(201).end();
});

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