循序渐进VUE+Element 前端应用开发(21）--- 省市区县联动处理的组件使用

npm install element-china-area-data -S

import { provinceAndCityData, regionData, rovinceAndCityDataPlus, regionDataPlus,  CodeToText, TextToCode } from 'element-china-area-data';

<div class="three">
      <span class="imp">3. 三级联动（不带“全部”选项）</span>
      <el-cascader
        v-model="selectedOptions2"
        class="long"
        size="large"
        :options="regionData"
        @change="handleChange"
      />
    </div>

<div class="bind">
      <div>绑定值：{{ selectedOptions2 }}</div>
      <div>区域码转汉字：{{ CodeToText[selectedOptions2[0]] }},{{ CodeToText[selectedOptions2[1]] }},{{ CodeToText[selectedOptions2[2]] }}</div>
      <div>汉字转区域码：{{ convertTextToCode(CodeToText[selectedOptions2[0]], CodeToText[selectedOptions2[1]], CodeToText[selectedOptions2[2]]) }}</div>
    </div>

selectedOptions2: ['120000', '120100', '120101'],

<template>
  <div id="app">
    <el-cascader
      size="large"
      :options="options"
      v-model="selectedOptions"
      @change="handleChange">
    </el-cascader>
  </div>
</template>
<script>
  import { regionDataPlus } from 'element-china-area-data'
  export default {
    data () {
      return {
        options: regionDataPlus,
        selectedOptions: []
      }
    },
    methods: {
      handleChange (value) {
        console.log(value)
      }
    }
  }
</script>

<h3>常规表单下拉选择元素模式</h3>
  <p>Regular form element with select tag</p>
  <v-region :town="true"></v-region>

<span class="imp">基于v-region控件省市区街道选择组件</span>
    <div class="vregion">
      <h3>常规表单下拉选择元素模式</h3>
      <v-region v-model="selectedRegion" :town="true" @values="regionChange" />
      <br><br>
      <h3>多分组切换模式</h3>
      <v-region
        v-model="modelGroup"
        :town="true"
        type="group"
        @values="regionChange"
      />
      <br><br><br>
      <h3>多列竖排模式</h3>
      <p>Column group</p>
      <v-region type="column" @values="regionChange" />
      <br><br><br>
      <h3>城市选择器</h3>
      <p>City picker</p>
      <v-region type="city" :city-picker="true" @values="regionChange" />
    </div>

selectedRegion: {
        province: '350000',
        city: '350100',
        area: '350104',
        town: '350104008'
      }

selectedRegion: { province: '440000', city: '440100', area: '440111', town: '440111010' },

// 修改编辑窗体的省市区街道
    changeEditRegion(data) {
      console.log(data)
      if (data) {
        this.editForm.province = data.province ? data.province.key : '';
        this.editForm.city = data.city ? data.city.key : '';
        this.editForm.district = data.area ? data.area.key : '';
        this.editForm.street = data.town ? data.town.key : '';
        // console.log(this.editForm)
      }
    },

<!--用来演示联动的案例-->
<template>
  <div class="flex-container">
    <div class="flex-item">
      <label>省</label>
      <el-select v-model="provinceValue" placeholder="请选择省" @change="chooseProvince">
        <el-option
          v-for="item in provinceData"
          :key="item.id"
          :label="item.provinceName"
          :value="item.id"
        />
      </el-select>
    </div>
    <div class="flex-item">
      <label>市</label>
      <el-select v-model="cityValue" placeholder="请选择市" @change="chooseCity">
        <el-option
          v-for="item in cityData"
          :key="item.id"
          :label="item.cityName"
          :value="item.id"
        />
      </el-select>
    </div>
    <div class="flex-item">
      <label>区、县</label>
      <el-select v-model="areaValue" placeholder="请选择区、县" @change="chooseArea">
        <el-option
          v-for="item in areaData"
          :key="item.id"
          :label="item.districtName"
          :value="item.id"
        />
      </el-select>
    </div>
  </div>
</template>
<script>
// 导入Axios的HTTP请求处理封装类
import { Province, City, District } from '@/api/city'
export default {
  data() {
    return {
      provinceValue: '',
      cityValue: '',
      areaValue: '',
      provinceData: [],
      cityData: [],
      areaData: []
    }
  },
  created() {
    Province.GetAll().then(res => {
      if (res.result) {
        this.provinceData = res.result.items
        // console.log(res.result);
      }
    }).catch(e => {
      this.$message.error('网络连接超时');
    })
  },
  methods: {
    chooseProvince(value) {
      this.cityValue = '';
      this.areaValue = '';
      this.cityData = [];
      this.areaData = [];
      var data = { ProvinceID: value };
      City.GetAll(data).then(res => {
        if (res.result) {
          this.cityData = res.result.items
        }
      }).catch(e => {
        this.$message.error('网络连接超时');
      })
    },
    chooseCity(value) {
      this.areaValue = '';
      var data = { CityID: value };
      District.GetAll(data).then(res => {
        if (res.result) {
          this.areaData = res.result.items
        }
      }).catch(e => {
        this.$message.error('网络连接超时');
      })
    },
    chooseArea() {
    }
  }
}
</script>
<style>
.flex-container {
  display: flex;
  flex-flow: row wrap;
  justify-content: space-around;
  padding: 0;
  margin: 0;
  list-style: none;
}
.flex-item {
  padding: 5px;
  height: auto;
  color: tomato;
  font-weight: bold;
  text-align: center;
}
</style>