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aliyun-mdb-floatfix

v1.0.3

Published

在云函数中将浮点数存储到mongodb时,数据库会自动转为对象的bug (num字段应该为浮点数类型): ```javascript { "_id": "5f44cdd367f1376654bef7a8", "num": { "high": 3471712362749231000, "low": 15648, "negative": false, "naN": false, "infinite": false, "finite":

Downloads

20

Readme

阿里云函数nodejs-mongodb,存储浮点数兼容函数

在云函数中将浮点数存储到mongodb时,数据库会自动转为对象的bug (num字段应该为浮点数类型):

{
  "_id": "5f44cdd367f1376654bef7a8",
  "num": {
    "high": 3471712362749231000,
    "low": 15648,
    "negative": false,
    "naN": false,
    "infinite": false,
    "finite": true
  }
}

安装

npm i -s aliyun-mdb-floatfix

使用

方式一: 在获取数据后,进行一次转换

const deepParseFloat = require('aliyun-mdb-floatfix');


let result = await cloud.db.collection('float').find(
        {  
            _id: '5f44cdd367f1376654bef7a8' 
        }, 
        {  
            limit: 1, 
        }
    )
    
    
    result = deepParseFloat(result) //深度遍历转换对应的对象为浮点数

方式二: 统一挂入钩子

云函数端


const { hook } = require('aliyun-mdb-floatfix');

exports.get = async (context) => {
    const cloud = context.cloud; 
    const openId = context.openId;

    hook(cloud);  //挂入钩子 当调用find aggregate函数结果会自动处理浮点数对象

    let result = await cloud.db.collection('float').find(
        {  
            _id: '5f44cdd367f1376654bef7a8' 
        }, 
        {  
            limit: 1, 
        }
    )
    return result[0][openId];
};

小程序端

import cloud from '@tbmp/mp-cloud-sdk';
import { hook } from 'aliyun-mdb-floatfix';

cloud.init({
  env: 'test'
});

hook(cloud); //挂入钩子 当调用find aggregate函数结果会自动处理浮点数对象

let getData = async ()=>{
  let result = await cloud.db.collection('float').find(
          {  
              _id: '5f44cdd367f1376654bef7a8' 
          }, 
          {  
              limit: 1, 
          }
      )
  console.log(result);
  return result
}