如何格式化JSON对象键/值对

问题描述

我是nodejs的新手，现在我能够从数据库中获取数据并显示为键/值对的REST API.我的输出如下图所示

I am new to nodejs, right now I am able to fetch the data from the database and display as REST API which is of key/value pair. My output looks like as shown below

[{"id":"793","actionname":"test_bsc_interface","actionid":"100"}].

但是我需要格式化为

{ "header" : [id,actionname,actionid],

  "values" : [793 ,test_bsc_interface,100] ],}.

我尝试了JSON.stringfy，并检查了几个网站，但无法正常工作.

I tried with JSON.stringfy and checked few website but it's not working.

任何人都可以帮助我通过哪个链接或方法来帮助我.

Could any one please help me through which link I should go through or approach.

推荐答案

简单的方法是使用下划线或 lodash 模块对其进行格式化:

The easy way to do it is to use underscore or lodash module to format it:

var _ = require('lodash');

var data = [{"id":"793","actionname":"test_bsc_interface","actionid":"100"}];
var result = _.map(data, function(o) {
  return {headers: _.keys(o), values : _.values(o)}
});
console.dir(result);

输出为:

[
  {
    headers: [ 'id', 'actionname', 'actionid' ],
    values: [ '793', 'test_bsc_interface', '100' ]
  }
]

要获得所需的结果，只需执行result [0]

To get the result you want, just do result[0]

请注意，我使用_.map()代替了data [0]，因为它适用于具有1个以上项的数组(查询中的数组结果).

Note that I use _.map() instead of data[0] because this will work for the array (your array result from the query) that has more than 1 item.

var _ = require('lodash');

var data = [
  { id: '714', actionname: 'test_bsc_interface', actionid: '100' },
  { id: '715', actionname: 'list_all_available_interfaces', actionid: '103' },
  { id: '716', actionname: 'check_tt', actionid: '101' }
];

var result;

if (_.size(data) > 0) {
  result = {
    headers: _.keys(data[0]),
    values: _.map(data, function(o) {
      return _.values(o);
    })
  };
}

console.dir(result);

，输出为:

{
  headers: [ 'id', 'actionname', 'actionid' ],
  values: [
    [ '714', 'test_bsc_interface', '100' ],
    [ '715', 'list_all_available_interfaces', '103' ],
    [ '716', 'check_tt', '101' ]
  ]
}

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