如何在mongoose，Node.js中通过var设置密钥? [英] how to set key by var in mongoose,Node.js?

问题描述

我没有将变量设置为更新密钥，我的代码...

I don't set variable the key for update, my code...

mongoose.model('members', Schema).update({ id: '0' }, {$push: {'this_key': 'value'}} , [], function (err, data){});

如果我使用

var this_key = 'test';

但是this_key不是'test'，它是'this_key'

but this_key is not 'test' it's 'this_key' in

    mongoose.model('members', Schema).update({ id: '0' }, {$push: {this_key: 'value'}} , [], function (err, data){});

我需要获取一些ext POST []值来设置变量this_key，

I need get some value ext POST[] to set variable this_key,

如何在mongoose，Node.js中按变量设置密钥?

how to set key by variable in mongoose,Node.js?

推荐答案

对象字段名称中的字符串文字的语法在这里给您带来困扰.要解决这个问题，请制作一个中间对象并在不使用文字的情况下构造它:

The syntax for string literals in object field names is biting you here. To get around it, make an intermediate object and construct it without using literals:

var this_key = 'test';
var push = {};
push[this_key] = 'value';   // here, it will use the variable

mongoose.model('members', Schema).update(
   { id: '0' }, {$push: push} , [], function (err, data){});

这篇关于如何在mongoose，Node.js中通过var设置密钥?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！