微信小程序 ecshop地址三级联动实现实例代码

微信小程序 ecshop地址3级联动实现实例代码

picker标签，官方给出的实例：

<view class="section">
<view class="section__title">地区选择器</view>
<picker bindchange="bindPickerChange" value="{{index}}" range="{{array}}">
<view class="picker">
当前选择：{{array[index]}}
</view>
</picker>
</view>
Page({
data: {
array: ['美国', '中国', '巴西', '日本'],
index: 0,
},
bindPickerChange: function(e) {
console.log('picker发送选择改变，携带值为', e.detail.value)
this.setData({
index: e.detail.value
})
},
})

wxml页面：

<view class="add-list under-line" >
<view class="add-lab">收货地址</view>
<view class="add-text">
<picker class="w-3" bindchange="bindPickerProvince" value="{{provinceIndex}}" range="{{province}}" >
<view class="picker">{{province[provinceIndex]}}</view>
</picker>
<picker class="w-3" bindchange="bindPickerCity" value="{{cityIndex}}" range="{{city}}" >
<view class="picker">{{city[cityIndex]}}</view>
</picker>
<picker class="w-3" bindchange="bindPickerDistrict" value="{{districtIndex}}" range="{{district}}" >
<view class="picker">{{district[districtIndex]}}</view>
</picker>
</view>
</view>

js页面：

var app = getApp()
Page({
data:{
motto: 'jxcat',
serverUrl: app.globalData.ajaxUrl,
baseUrl: app.globalData.baseUrl,
title: "收货地址",
address_id: "",
address: "",
province:[],
province_id: [], //后台返回的数据对应 region_id city,district 与此相同
province_name: [], //后台返回的数据对应 region_name
provinceIndex: 0, //wxml页面选择的选项，从0开始
provinceId: 0, //根据wxml页面选择的选项获取到province_id: []对应的region_id
city:[].
city_id: [],
city_name: [],
cityIndex: 0,
cityId: 0,
district:[],
district_id: [],
district_name: [],
districtIndex: 0,
districtId: 0,
},
onLoad:function(options){
// 页面初始化 options为页面跳转所带来的参数
var that = this
var get_data
wx.checkSession({
success: function(){
//登录态未过期
wx.getStorage({
key: 'wcx_session',
success: function(sres) {
get_data = {
m: 'api',
c: 'user' ,
a: 'edit_address',
wcx_session: sres.data,
}
if(options.act == 'edit'){
get_data = {
m: 'api',
c: 'user' ,
a: 'edit_address',
id: options.id,
wcx_session: sres.data,
}
}
wx.request({
url: app.globalData.ajaxUrl,
data: get_data,
header: {
'content-type': 'application/json'
},
success: function(res) {
if(options.act == "edit"){
that.data.provinceId = res.data.consignee.province
that.data.cityId = res.data.consignee.city
that.data.districtid = res.data.consignee.district
}
for(var i=0; i<res.data.province_list.length; i++){{
that.data.province_id[i] = res.data.province_list[i].region_id //把region_id存入province_id
that.data.province_name[i] = res.data.province_list[i].region_name //把region_name存入province_name
if(res.data.consignee.province == res.data.province_list[i].region_id){
that.data.provinceIndex = i
}
}}
for(var i=0; i<res.data.city_list.length; i++){{
that.data.city_id[i] = res.data.city_list[i].region_id
that.data.city_name[i] = res.data.city_list[i].region_name
if(res.data.consignee.city == res.data.city_list[i].region_id){
that.data.cityIndex = i
}
}}
for(var i=0; i<res.data.district_list.length; i++){{
that.data.district_id[i] = res.data.district_list[i].region_id
that.data.district_name[i] = res.data.district_list[i].region_name
if(res.data.consignee.district == res.data.district_list[i].region_id){
that.data.districtIndex = i
}
}}
that.data.address_id = options.id
that.setData({
consignee: res.data.consignee,
province: that.data.province_name,
provinceIndex: that.data.provinceIndex,
city: that.data.city_name,
cityIndex: that.data.cityIndex,
district: that.data.district_name,
districtIndex: that.data.districtIndex
})
}
})
//request
}
})
},
fail: function(){
//登录态过期
wx.login()
}
})
},
bindPickerProvince: function(event){
var that = this
var getId = event.detail.value //获取到wxml选择的选项对应的下标，从0开始
that.data.provinceId = that.data.province_id[getId] //根据获取到的下标获取到region_name对应的region_id
wx.request({
url: app.globalData.ajaxUrl,
data: {
m: 'api',
c: 'public' ,
a: 'region',
rtype: 2,
rparent: that.data.provinceId,
},
header: {
'content-type': 'application/json'
},
success: function(res){
for(var i=0; i<res.data.regions.length; i++){{
that.data.city_id[i] = res.data.regions[i].region_id
that.data.city_name[i] = res.data.regions[i].region_name
}}
that.setData({
city: that.data.city_name,
provinceIndex: getId,
})
},
})
},
bindPickerCity: function(event){
var that = this
var getId = event.detail.value
that.data.cityId = that.data.city_id[getId]
wx.request({
url: app.globalData.ajaxUrl,
data: {
m: 'api',
c: 'public' ,
a: 'region',
rtype: 3,
rparent: that.data.cityId,
},
header: {
'content-type': 'application/json'
},
success: function(res){
for(var i=0; i<res.data.regions.length; i++){{
that.data.district_id[i] = res.data.regions[i].region_id
that.data.district_name[i] = res.data.regions[i].region_name
}}
that.setData({
district: that.data.district_name,
cityIndex: getId,
})
},
})
},
bindPickerDistrict: function(event){
var that = this
var getId = event.detail.value
that.data.districtId = that.data.district_id[getId]
that.setData({
districtIndex: getId,
})
},
formSubmit: function(event) {
var that = this
wx.checkSession({
success: function(){
//登录态未过期
wx.getStorage({
key: 'wcx_session',
success: function(sres) {
wx.request({
url: app.globalData.ajaxUrl,
data: {
m: 'api',
c: 'user' ,
a: 'add_address',
address_id: that.data.address_id,
province: that.data.provinceId, // wxml页面选择的地址对应的 region_id
city: that.data.cityId,
district: that.data.districtId,
address: event.detail.value.address,
consignee: event.detail.value.consignee,
mobile: event.detail.value.mobile,
zipcode: event.detail.value.zipcode,
wcx_session: sres.data,
},
header: {
'content-type': 'application/json'
},
success: function(res) {
console.log(res)
wx.redirectTo({
url: 'address'
})
}
})
//request
}
})
},
fail: function(){
//登录态过期
wx.login()
}
})
},
})

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