如何配置Express响应对象来自动添加属性到JSON？ [英] How to configure the Express response object to automatically add attributes to JSON?

问题描述

我有一个对象：

  var obj = {stuff：stuff} 
  

在Express中，我发送客户端：

  res.json（OBJ）; 
  

有没有办法配置响应对象来自动添加属性到生成的json？例如，输出：

  {
status：ok，
data ：{stuff：stuff} 
} 
  

谢谢！

解决方案

一旦数据被添加到流中，这太迟了，无法重新包装，所以你必须这样做。



只需一个函数：

  res.json（wrap（obj）） ; 
  

您还可以添加自己的json方法

  express.response.wrap_json = function（obj）{
 this.json（wrap（obj））; 
}; 
  

所以你现在可以调用

  res.wrap_json（OBJ）; 
  

或者您可以用您的代替替换express json实现

  var original = express.response.json; 
 express.response.json = function（obj）{
 original.call（this，wrap（obj））; 
}; 
  

如果你想覆盖所有的json调用，我只会使用最后一个。

I have an object:

var obj = { "stuff": "stuff" }

In Express, I send it the client like so:

res.json(obj);

Is there a way to configure the response object to automatically add attributes to the json it generates? For example, to output:

{
  "status": "ok",
  "data": { "stuff": "stuff" }
}

Thanks!

解决方案

Once the data has been added to the stream, that's too late to rewrap it, so you have to do it before.

Either simply with a function:

res.json(wrap(obj));

You could also add your own json method

express.response.wrap_json = function(obj) {
  this.json(wrap(obj));
};

so you can now call

res.wrap_json(obj);

Or you could replace express json implementation with yours

var original = express.response.json;
express.response.json = function(obj) {
  original.call(this, wrap(obj));
};

I would only use the last one if you want to override all json calls.

这篇关于如何配置Express响应对象来自动添加属性到JSON？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！