1. // 云函数模板
    2. // 部署：在 cloud-functions/login 文件夹右击选择 “上传并部署”
    4. const cloud = require('wx-server-sdk')
    6. // 初始化 cloud
    7. cloud.init({
    8.   // API 调用都保持和云函数当前所在环境一致
    9.   mst: cloud.DYNAMIC_CURRENT_ENV
    10. })
    12. /**
    13.  * 这个示例将经自动鉴权过的小程序用户 openid 返回给小程序端
    14.  * 
    15.  * event 参数包含小程序端调用传入的 data
    16.  * 
    17.  */
    18. const db = cloud.database()
    19. const _ = db.command
    21. exports.main = async (event, context) => {
    22.   const wxContext = cloud.getWXContext()
    23.   let users = await db.collection('users').where({
    24.     openid: wxContext.OPENID
    25.   }).get()  //查询用户信息
    26.   let newUser = await db.collection('users').orderBy('createTime', 'desc').get()
    27.   const userId = () => {
    28.     console.log('user', users.data.length, 'newuser', newUser.data.length)
    29.     return users.data.length == 0 && newUser.data.length == 0 ? 10000000 : newUser.data[0].userId + 1
    30.   }
    31.   if (users.data.length) {
    32.     // console.log('更新用户', newUser)
    33.     await db.collection('users').doc(users.data[0]._id).update({
    34.       data: {
    35.         userInfo: event.userInfo
    36.       }
    37.     })
    38.     let upUsers = await db.collection('users').doc(users.data[0]._id).get()
    39.     console.log('更新用户', upUsers)
    40.     return upUsers
    42.   } else {
    43.     let obj = Object.assign(event, { userId: userId() }, { openid: wxContext.OPENID }, { createTime: db.serverDate() })
    44.     let datas = await db.collection('users').add({ data: obj })
    45.     let newUser = await await db.collection('users').doc(datas._id).get()
    46.     console.log('新增用户', newUser )
    47.     return newUser
    49.   }
    50. }
    1. {
    2.   "name": "login",
    3.   "version": "1.0.0",
    4.   "description": "",
    5.   "main": "index.js",
    6.   "scripts": {
    7.     "test": "echo \"Error: no test specified\" && exit 1"
    8.   },
    9.   "author": "",
    10.   "license": "ISC",
    11.   "dependencies": {
    12.     "wx-server-sdk": "latest"
    13.   }
    14. }