pk8f3pmu2/pages/classroom/classroom.js

// pages/classroom/classroom.js
const AV = require("../../lib/av-live-query-weapp-min")
const { jsonify } = require('../../utils/leancloudutils');

Page({
  /**
   * 页面的初始数据
   */
  presence: null,
  students: [],
  present_students: [],
  class: null,
  data: {
    present_students: [],
    students: [],
    unpresent_students: [],
    class_name: "",
    class_id: "",
  },
  fetch_present: function(){
    var query = new AV.Query("Presence");
    query.include("user");
    return query.find();
  },

  /**
   * 生命周期函数--监听页面加载
   */
  onLoad: function (options) {
    this.class = AV.Object.createWithoutData("Class_", options.class_id);
    this.class.fetch().then((class_)=>{
      console.log(this.class);
      this.setData(this.class.get("name"));
    })
    console.log("onLoad");

  },

  /**
   * 生命周期函数--监听页面初次渲染完成
   */
  onReady: function () {
    this.fetch_present().then((presents)=>{
      console.log({students: presents.map((present)=>{return present.get("user")})});
      this.setData(jsonify({students: presents.map((present)=>{return present.get("user")})}));
    })
    console.log("onReady");
  },

  /**
   * 生命周期函数--监听页面显示
   */
  onShow: function () {
    console.log("onShow");
    this.class.enter();
  },

  /**
   * 生命周期函数--监听页面隐藏
   */
  onHide: function () {
    this.class.leave();
    console.log("onHide");
  },

  /**
   * 生命周期函数--监听页面卸载
   */
  onUnload: function () {
    this.class.leave();
    console.log("onUnload");
  },

  /**
   * 页面相关事件处理函数--监听用户下拉动作
   */
  onPullDownRefresh: function () {

  },

  /**
   * 页面上拉触底事件的处理函数
   */
  onReachBottom: function () {

  },

  /**
   * 用户点击右上角分享
   */
  onShareAppMessage: function () {
    console.log("onShareAppMessage");
  }
})