schoolwisdoms-student-mp/pages/piano/piano.js

// pages/piano/piano.js
const app = getApp()
const util = require("../../utils/util")
const urlDef = require("../../utils/urls")
Page({

  /**
   * 页面的初始数据
   */
  data: {
    beginDate: null,
    endDate: null,
    list: [
    ],
    loading: '上拉加载',
    flag: 0,
    pageNum: 0,
    hasNextPage: true,
  },



  getPiano: function () {
    wx.navigateTo({
      url: '/pages/makePiano/makePiano',
    })
  },

  /**
   * 生命周期函数--监听页面加载
   */
  onLoad: function (options) {


  },

  /**
   * 生命周期函数--监听页面初次渲染完成
   */
  onReady: function () {
  },

  /**
   * 生命周期函数--监听页面显示
   */
  onShow: function () {
    let now = new Date();
    // 显示近7天的预约记录
    let bd = util.formatTime(now).substring(0, 10).replace(/\//g, '-')
    let edd = new Date(now.setDate(now.getDate() + 7));
    let ed = util.formatTime(edd).substring(0, 10).replace(/\//g, '-')
    this.setData({ beginDate: bd, endDate: ed, list: [] });
    this.queryList();
  },

  /**
   * 生命周期函数--监听页面隐藏
   */
  onHide: function () {

  },

  /**
   * 生命周期函数--监听页面卸载
   */
  onUnload: function () {

  },

  /**
   * 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 () {
    if (this.data.hasNextPage) {
      let pn = this.data.pageNum
      this.setData({ loading: '加载中', 'pageNum': ++pn })
      this.queryList()
    }
  },

  /**
   * 用户点击右上角分享
   */
  onShareAppMessage: function () {

  },
  getDates: function (e) {
    this.setData({
      list: [],
      pageNum: 0,
      beginDate: e.detail[0],
      endDate: e.detail[1],
      loading: '加载中'
    })
    this.queryList()
  },
  queryList: function () {
    const urls = urlDef.urls;
    let stu = wx.getStorageSync('student');
    if (stu) {
      let params = { 'q.beginDate': this.data.beginDate, 'q.endDate': this.data.endDate, 'q.studentId': stu.studentId }
      params.pageNum = this.data.pageNum
      util.apiPost(urls.query_appointment_list, params).then(rs => {
        let list = rs.list
        list.map(o => {
          o.visitDate = o.visitDate.substring(0, 10)
          o.cancelFlag = this.canCancel(o) // 是否可以取消
        })
        this.setData({
          'hasNextPage': rs.hasNextPage,
          'loading': rs.hasNextPage ? '下拉刷新' : '没有更多数据',
          'list': this.data.list.concat(list)
        })
      })
    }
  },
  canCancel(item) { // 判断是否能取消, 未到预约时间前都能取消，至少提前1个小时
    let t = item.visitDate + ' ' + item.beginTime + ':00';
    let vdt = new Date(t.replace(/-/g,'/'));
    let tdt = new Date().getTime();
    if (vdt < tdt) {
      return false;
    }
    // const dayTime = 86400000;
    const dayTime = 3600000;
    return item.attend == 0 && (vdt - tdt) >= dayTime
  },
  doCancel: function (e) {
    let id = e.currentTarget.dataset.id
    let that = this
    wx.showModal({
      title: '确认信息',
      content: '确定要取消本次预约?',
      showCancel: true,
      cancelText: "否",
      confirmText: "是",
      success: function (res) {
        if (res.cancel) {
        } else {
          wx.showLoading({
            title: '正在取消',
            mask: true
          })
          that.doRealCancel(id)
        }
      }
    })
  },
  doRealCancel: function (id) {
    const urls = urlDef.urls;
    util.apiPost(urls.cancel_appointment + '?id=' + id).then(rs => {
      if (rs.message) {
        wx.showToast({ title: rs.message, icon: 'none' })
        return
      }
      wx.showToast({ title: '取消成功', icon: 'success' })
      this.setData({
        list: [],
        pageNum: 0,
        loading: '加载中'
      })
      this.queryList()
    })
  }
})