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" rel="external nofollow" >
<link rel="stylesheet" type="text/css" href="css/main.css" rel="external nofollow" >
<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" rel="external nofollow" rel="external nofollow" >用户中心</a>
<span>|</span>
<a href="cart.html" rel="external nofollow" >我的购物车</a>
<span>|</span>
<a href="user_center_order.html" rel="external nofollow" rel="external nofollow" >我的订单</a>
</div>
</div>
</div>
</div> <div class="search_bar clearfix">
<a href="index.html" rel="external nofollow" class="logo fl"><img src="data: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" rel="external nofollow" rel="external nofollow" >· 个人信息</a></li>
<li><a href="user_center_order.html" rel="external nofollow" rel="external nofollow" >· 全部订单</a></li>
<li><a href="user_center_site.html" rel="external nofollow" class="active">· 收货地址</a></li>
<li><a href="user_center_pass.html" rel="external nofollow" >· 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="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >关于我们</a>
<span>|</span>
<a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >联系我们</a>
<span>|</span>
<a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >招聘人才</a>
<span>|</span>
<a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >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
