huiting/cloudfunctions/updateUser/index.js

// 云函数入口文件
const cloud = require('wx-server-sdk')

cloud.init()
const db = cloud.database()

// 云函数入口函数
exports.main = async (event, context) => {
  let {
    OPENID
  } = cloud.getWXContext()

  db.collection('user').where({
    _id: OPENID
  }).get().then(res => {
    if (res.data.length) {
      db.collection('user').doc(OPENID).update({
        data: {
          name: event.name,
          avatar: event.avatar,
          gender: event.gender
        }
      })
    } else {
      db.collection('user').add({
        data: {
          _id: OPENID,
          name: event.name,
          avatar: event.avatar,
          gender: event.gender
        }
      })
    }
  })
}