daliangzao/pages/momo/momo.js

// newsShop/pages/patternMenu/patternMenu.js
let app = getApp();
let host = app.globalData.servsers; // 请求的url
Page({

  /**
   * 页面的初始数据
   */
  data: {
    host: host,
    requestState: true, //检测请求状态是否结束了
    filterStatic: false,
    goodsList: [],
    page: 1, //默认是第一页
    limit: 20, //一页20条数据
    requestState: true, //默认是可以向下请求的
    loginStatic: false, //登陆状态，默认为false
    reachBottomState:true,//判断是否有上拉加载状态
    tabBar: {
      "color": "#2d2d2d",
      "selectedColor": "#e81021",
      "borderStyle": "white",
      "backgroundColor": "#fff",
      "list": [{
          "pagePath": "/pages/index/index",
          "iconPath": "../../images/news/home.png",
          "selectedIconPath": "images/news/home_select.png",
          "text": "首页"
        },
        {
          "pagePath": "/pages/kind/index",
          "iconPath": "../../images/news/classify.png",
          "selectedIconPath": "images/news/classify_select.png",
          "text": "分类"
        },
        {
          "pagePath": "/pages/car/index",
          "iconPath": "../../images/news/car.png",
          "selectedIconPath": "images/news/car_select.png",
          "text": "购物车"
        },
        {
          "pagePath": "/pages/mine/mine",
          "iconPath": "../../images/news/user.png",
          "selectedIconPath": "images/news/user_select.png",
          "text": "我的"
        }
      ]
    },
  },

  /**
   * 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 that = this;
    that.setData({
      goodsList:[],
      page:1,
      reachBottomState: true,//判断是否有上拉加载状态
    })
    if (!wx.getStorageSync('channelIdObj')) { // 还没有登录过渠道
      wx.navigateTo({
        url: '/pages/login/login?url=/pages/momo/momo&&type=1&&back=2',
      })
    } else {
      that.getGiftList(that)
    }
    if (wx.getStorageSync('channelIdObj').channelId) {
      that.setData({
        loginStatic: true,
      })
    }
  },

  /**
   * 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 () {
    let that = this;
    if (that.data.requestState) {
      that.setData({
        page: that.data.page + 1
      })
      that.getGiftList(that)
    }
  },

  /**
   * 页面上拉触底事件的处理函数
   */
  onReachBottom: function () {
    console.log('开始上拉')
    let that = this;
    if (that.data.reachBottomState){
      that.setData({
        page: ++that.data.page
      })
      that.getGiftList(that)
    } else {
      console.log('已经到底')
    }
    
  },

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

  },
  getGiftList(that) {
    let data = {
      limit: that.data.limit, // 一页20条数据
      offset: that.data.page, //当前页数
      channelId: wx.getStorageSync('channelIdObj').channelId ? wx.getStorageSync('channelIdObj').channelId : ""
    }
    wx.request({
      url: host + '/queryAllCommodityByChannelId',
      method: 'get',
      data: data,
      success(res) {
        let dataArray = that.data.goodsList;
        if (res.data.rows.length < 20){
          that.setData({
            reachBottomState:false,
          })
        }
        res.data.rows.forEach(el => {
          el.logo = el.commodity_logo.split(",")
        })
        dataArray.push(...res.data.rows)
        that.setData({
          goodsList: dataArray,
          requestState: res.data.rows.length == that.data.limit
        })
      }
    })
  },
  toGoodsDetail(e) { // 进入商品详情页
    let that = this,
      id = e.currentTarget.dataset.id;
    wx.navigateTo({
      url: '/pages/buy/buy?com_id=' + id,
    })
  }
})