首先完成省市区三级联动
新建areas应用
python ../../manage.py startapp areas
模型类代码
class Area(models.Model): """ 行政区划 """ name = models.CharField(max_length=20, verbose_name='名称') parent = models.ForeignKey('self', on_delete=models.SET_NULL, related_name='subs', null=True, blank=True, verbose_name='上级行政区划') class Meta: db_table = 'tb_areas' verbose_name = '行政区划' verbose_name_plural = '行政区划' def __str__(self): return self.name
模型类代码说明：
parent = models.ForeignKey('self', on_delete=models.SET_NULL, related_name='subs', null=True, blank=True, verbose_name='上级行政区划')
self：自关联
on_delete=models.SET_NULL 在删除父级的时候，自己的parent_id设置为空，这里就不在级联删除了，避免误删除，采集数据不容易。
related_name=’subs’ 这个跟flask的backref很类似。 意思为如果想找自己的子级，就可以通过area.subs找到自己下级所有的area区域。
之后配置应用
然后迁移数据库
python manage.py makemigrations
python manage.py migrate
导入测试数据脚本
增加执行权限
返回省市区数据的后端视图集实现
定义视图最终如下
采用视图集
序列化器
定义路由
DRF缓存的实现
省市区的数据是经常被用户查询使用的，而且数据基本不变化，所以我们可以将省市区数据进行缓存处理，减少数据库的查询次数。
在Django REST framework中使用缓存，可以通过drf-extensions扩展来实现。
关于扩展使用缓存的文档，可参考链接http://chibisov.github.io/drf-extensions/docs/#caching
安装
pip install drf-extensions
使用方法
配置文件
禁止分页
前端代码
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en"> <head> <meta http-equiv="Content-Type" content="text/html;charset=UTF-8"> <title>美多商城-用户中心</title> <link rel="stylesheet" type="text/css" href="css/reset.css"> <link rel="stylesheet" type="text/css" href="css/main.css"> <script type="text/javascript" src="js/host.js"></script> <script type="text/javascript" src="js/vue-2.5.16.js"></script> <script type="text/javascript" src="js/axios-0.18.0.min.js"></script> <script> var user_id = sessionStorage.user_id || localStorage.user_id; var token = sessionStorage.token || localStorage.token; if (!(user_id && token)) { location.href = '/login.html?next=/user_center_site.html'; } </script> </head> <body> <div id="app" v-cloak> <div class="header_con"> <div class="header"> <div class="welcome fl">欢迎来到美多商城!</div> <div class="fr"> <div class="login_btn fl"> 欢迎您：<em>{{ username }}</em> <span>|</span> <a @click="logout">退出</a> </div> <div class="user_link fl"> <span>|</span> <a href="user_center_info.html">用户中心</a> <span>|</span> <a href="cart.html">我的购物车</a> <span>|</span> <a href="user_center_order.html">我的订单</a> </div> </div> </div> </div> <div class="search_bar clearfix"> <a href="index.html" class="logo fl"><img src="images/logo.png"></a> <div class="sub_page_name fl">| 用户中心</div> <form method="get" action="/search.html" class="search_con fr mt40"> <input type="text" class="input_text fl" name="q" placeholder="搜索商品"> <input type="submit" class="input_btn fr" name="" value="搜索"> </form> </div> <div class="main_con clearfix"> <div class="left_menu_con clearfix"> <h3>用户中心</h3> <ul> <li><a href="user_center_info.html">· 个人信息</a></li> <li><a href="user_center_order.html">· 全部订单</a></li> <li><a href="user_center_site.html" class="active">· 收货地址</a></li> <li><a href="user_center_pass.html">· 修改密码</a></li> </ul> </div> <div class="right_content clearfix"> <div class="site_top_con"> <a @click="show_add">新增收货地址</a> <span>您已创建了<b>{{addresses.length}}</b>个收货地址，最多可创建<b>{{ limit }}</b>个</span> </div> <div class="site_con" v-for="(address, index) in addresses"> <div class="site_title"> <div v-if="is_set_title[index]"> <input v-model="input_title" type="text" name=""> <input @click="save_title(index)" type="button" name="" value="保 存"> <input @click="cancel_title(index)" type="reset" name="" value="取 消"> </div> <div v-else> <h3>{{ address.title }}</h3> <a @click="show_edit_title(index)"></a> </div> <em v-if="address.id==default_address_id">默认地址</em> <span @click="del_address(index)">×</span> </div> <ul class="site_list"> <li><span>收货人：</span><b>{{ address.receiver }}</b></li> <li><span>所在地区：</span><b>{{ address.province }} {{address.city}} {{ address.district }}</b></li> <li><span>地址：</span><b>{{ address.place }}</b></li> <li><span>手机：</span><b>{{ address.mobile }}</b></li> <li><span>固定电话：</span><b>{{ address.tel }}</b></li> <li><span>电子邮箱：</span><b>{{ address.email }}</b></li> </ul> <div class="down_btn"> <a v-if="address.id!=default_address_id" @click="set_default(index)">设为默认</a> <a @click="show_edit(index)">编辑</a> </div> </div> </div> </div> <div class="footer"> <div class="foot_link"> <a href="#">关于我们</a> <span>|</span> <a href="#">联系我们</a> <span>|</span> <a href="#">招聘人才</a> <span>|</span> <a href="#">友情链接</a> </div> <p>CopyRight © 2016 北京美多商业股份有限公司 All Rights Reserved</p> <p>电话：010-****888 京ICP备*******8号</p> </div> <div class="pop_con" v-show="is_show_edit"> <div class="site_con site_pop"> <div class="site_pop_title"> <h3 v-if="editing_address_index">编辑收货地址</h3> <h3 v-else>新增收货地址</h3> <a @click="is_show_edit=false">×</a> </div> <form> <div class="form_group"> <label>*收货人：</label> <input v-model="form_address.receiver" @blur="check_receiver" type="text" name=""> <span v-show="error_receiver" class="error_tip">请填写收件人</span> </div> <div class="form_group"> <label>*所在地区：</label> <select v-model="form_address.province_id"> <option v-for="province in provinces" v-bind:value="province.id">{{ province.name }}</option> </select> <select v-model="form_address.city_id"> <option v-for="city in cities" v-bind:value="city.id">{{ city.name }}</option> </select> <select v-model="form_address.district_id"> <option v-for="district in districts" v-bind:value="district.id">{{ district.name }}</option> </select> </div> <div class="form_group"> <label>*详细地址：</label> <input v-model="form_address.place" @blur="check_place" type="text" name=""> <span v-show="error_place" class="error_tip">请填写地址信息</span> </div> <div class="form_group"> <label>*手机：</label> <input v-model="form_address.mobile" @blur="check_mobile" type="text" name=""> <span v-show="error_mobile" class="error_tip">手机信息有误</span> </div> <div class="form_group"> <label>固定电话：</label> <input v-model="form_address.tel" type="text" name=""> </div> <div class="form_group"> <label>邮箱：</label> <input v-model="form_address.email" @blur="check_email" type="text" name=""> <span v-show="error_email" class="error_tip">邮箱信息有误</span> </div> <input @click="save_address" type="button" name="" value="保 存" class="info_submit"> <input @click="is_show_edit=false" type="reset" name="" value="取 消" class="info_submit info_reset"> </form> </div> <div class="mask"></div> </div> </div> <script type="text/javascript" src="js/user_center_site.js"></script> </body> </html>
js代码
var vm = new Vue({ el: '#app', data: { host: host, user_id: sessionStorage.user_id || localStorage.user_id, token: sessionStorage.token || localStorage.token, username: sessionStorage.username || localStorage.username, is_show_edit: false, provinces: [], cities: [], districts: [], addresses: [], limit: '', default_address_id: '', form_address: { receiver: '', province_id: '', city_id: '', district_id: '', place: '', mobile: '', tel: '', email: '', }, error_receiver: false, error_place: false, error_mobile: false, error_email: false, editing_address_index: '', // 正在编辑的地址在addresses中的下标，''表示新增地址 is_set_title: [], input_title: '' }, mounted: function(){ axios.get(this.host + '/areas/', { responseType: 'json' }) .then(response => { this.provinces = response.data; }) .catch(error => { alert(error.response.data); }); }, watch: { 'form_address.province_id': function(){ if (this.form_address.province_id) { axios.get(this.host + '/areas/'+ this.form_address.province_id + '/', { responseType: 'json' }) .then(response => { this.cities = response.data.subs; }) .catch(error => { console.log(error.response.data); this.cities = []; }); } }, 'form_address.city_id': function(){ if (this.form_address.city_id){ axios.get(this.host + '/areas/'+ this.form_address.city_id + '/', { responseType: 'json' }) .then(response => { this.districts = response.data.subs; }) .catch(error => { console.log(error.response.data); this.districts = []; }); } } }, methods: { // 退出 logout: function(){ sessionStorage.clear(); localStorage.clear(); location.href = '/login.html'; }, clear_all_errors: function(){ this.error_receiver = false; this.error_mobile = false; this.error_place = false; this.error_email = false; }, // 展示新增地址界面 show_add: function(){ this.clear_all_errors(); this.editing_address_index = ''; this.form_address.receiver = ''; this.form_address.province_id = ''; this.form_address.city_id = ''; this.form_address.district_id = ''; this.form_address.place = ''; this.form_address.mobile = ''; this.form_address.tel = ''; this.form_address.email = ''; this.is_show_edit = true; }, // 展示编辑地址界面 show_edit: function(index){ this.clear_all_errors(); this.editing_address_index = index; // 只获取数据，防止修改form_address影响到addresses数据 this.form_address = JSON.parse(JSON.stringify(this.addresses[index])); this.is_show_edit = true; }, check_receiver: function(){ if (!this.form_address.receiver) { this.error_receiver = true; } else { this.error_receiver = false; } }, check_place: function(){ if (!this.form_address.place) { this.error_place = true; } else { this.error_place = false; } }, check_mobile: function(){ var re = /^1[345789]d{9}$/; if(re.test(this.form_address.mobile)) { this.error_mobile = false; } else { this.error_mobile = true; } }, check_email: function(){ if (this.form_address.email) { var re = /^[a-z0-9][w.-]*@[a-z0-9-]+(.[a-z]{2,5}){1,2}$/; if(re.test(this.form_address.email)) { this.error_email = false; } else { this.error_email = true; } } }, // 保存地址 save_address: function(){ }, // 删除地址 del_address: function(index){ }, // 设置默认地址 set_default: function(index){ }, // 展示编辑标题 show_edit_title: function(index){ } , // 保存地址标题 save_title: function(index){ }, // 取消保存地址 cancel_title: function(index){ } } })
测试
