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// 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({ |
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title: '加载中', |
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mask: true |
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}) |
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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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}) |