如何将这些值添加到数组中？

Question

我在添加这些数组时遇到了问题

637301291068030997 => { guildMemberCount: 4,
guildOwnerID: '348832732647784460',
guildOwner: 'Ethical Hacker',
prefix: '.',
guildID: '637301291068030997',
guildName: 'test server 3',
welcomeChannelID: '-' },
(some number) => {other array}

在上面的数组中，我在doc.id 变量中接收到637301291068030997 数字，而其余的则进入doc.data()

我的代码是这样的

var temp = {}
temp.guilds = []                                 // after some lines 
snapshot.forEach(doc => {
        console.log(doc.id, '=>',doc.data());    // output is above array shown 
        temp.guilds.push(doc.id = doc.data())    // output of this line is given below this code
    })

这里是temp.guilds.push 的输出，缺失值是doc.id 或637301291068030997

{ guilds:
   [ { guildID: '637301291068030997',
       guildName: 'test server 3',
       welcomeChannelID: '-',
       guildMemberCount: 4,
       guildOwnerID: '348832732647784460',
       guildOwner: 'Ethical Hacker',
       prefix: '.' },
     {}   // this missing thing before {} is (some number) also bracket is empty by the way so no worries 
  ] 
}

我该怎么做才能在变量中得到如下所示的输出

  {
    "637301291068030997": [
      {
        "guildMemberCount": 4,
        "guildOwnerID": "348832732647784460",
        "guildOwner": "Ethical Hacker",
        "prefix": ".",
        "guildID": "637301291068030997",
        "guildName": "test server 3",
        "welcomeChannelID": "-"
      }
    ]
  }

将临时文件保存到文件的问题

await fs.writeFileSync ("./data/json/serversettings.json", JSON.stringify(temp), function(err) {
        if (err) throw err;
        console.log('done');
        })

省了这么多

{"guilds":[]}

没有在其中保存任何内容，但 console.log(temp) 给出了正确的输出

Answer 1

使用doc.id = doc.data()，您将数据分配到id 属性。那不可能是你想要的。

我建议根本不创建数组，而是创建一个普通（嵌套）对象。

像这样：

// ...
temp.guilds = {} // plain object, not array
snapshot.forEach(doc => {
    temp.guilds[doc.id] = doc.data();
})

如果snapshot.forEach 实现以异步方式进行回调，那么请确保等到所有回调都完成后再依赖temp.guilds 的内容。承诺可以减轻这项任务。

// ...
let promise = new Promise(function(resolve) {
    let guilds = {} // plain object, not array
    let remaining = snapshot.size; // If firebase, there is this property
    snapshot.forEach(doc => {
        guilds[doc.id] = doc.data();
        remaining--;
        if (!remaining) resolve(guilds);
    });
});
promise.then(function (guilds) {
    // do anything you like with guilds inside this function...
    let temp = { guilds };
    // ...
});