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92 lines
2.6 KiB
92 lines
2.6 KiB
// pages/moment/paper/index.js
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import { getCategoryList } from "../../api/moment"
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const util = require('../../../utils/util')
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const storage = require('../../../utils/storage')
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const event = require('../../../utils/event.js')
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const app = getApp()
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Page({
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/**
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* 页面的初始数据
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*/
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data: {
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categoryList: [],
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cateIds: null,
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cateIdList: null
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},
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/**
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* 生命周期函数--监听页面加载
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*/
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onLoad: function (options) {
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wx.showLoading({ title: '加载中', mask: true })
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this.data.cateIds = storage.get('cateIdList' + app.globalData.userInfo.userId)
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if(!util.isEmpty(this.data.cateIds)){
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this.data.cateIdList = this.data.cateIds.toString().split(',')
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}
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getCategoryList().then(result => {
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//成功回调
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if(!util.isEmpty(this.data.cateIds)){
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for (let index = 0; index < result.data.records.length; index++) {
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if(this.checkCategory(result.data.records[index].id)){
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result.data.records[index].checked = true
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}
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}
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}
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this.setData({categoryList: result.data.records})
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wx.hideLoading()
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}).catch(err => {
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//异常回调
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wx.hideLoading()
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})
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},
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checkCategory: function(id){
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if(!this.data.cateIdList || !this.data.cateIdList.length){
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return false
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}
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for (let index = 0; index < this.data.cateIdList.length; index++) {
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if(id == this.data.cateIdList[index]){
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return true
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}
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}
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return false
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},
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checkPaper: function(e) {
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var index = e.target.dataset.index
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var item = this.data.categoryList[index]
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if(item.checked){
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this.setData({ ['categoryList[' + index + '].checked']: !item.checked})
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return
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}
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var sum = 0
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for (let i = 0; i < this.data.categoryList.length; i++) {
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if(this.data.categoryList[i].checked){
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sum++
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}
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}
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if(sum >= 5){
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util.showToast('最多只能关注5个纸品')
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return
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}
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this.setData({ ['categoryList[' + index + '].checked']: !item.checked})
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},
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onUnload: function(){
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var cateString = ''
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for (let i = 0; i < this.data.categoryList.length; i++) {
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if(this.data.categoryList[i].checked){
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if(util.isEmpty(cateString)){
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cateString = this.data.categoryList[i].id
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} else {
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cateString += ',' + this.data.categoryList[i].id
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}
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}
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}
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if(util.isEmpty(cateString) && util.isEmpty(this.data.cateIds)){
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return
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}
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if(cateString != this.data.cateIds){
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storage.put('cateIdList' + app.globalData.userInfo.userId, cateString)
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event.emit('EventMessage', { what: 502, desc: 'CateChange' })
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}
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}
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})
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