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| <template>
| <el-form-item :label="placeholder" :prop="prop">
| <el-cascader
| :model-value="formatedValue"
| @change="handleChange"
| :options="locations"
| :placeholder="placeholder"
| :props="optionProps"
| style="width: 280px"
| />
| </el-form-item>
| </template>
|
| <script>
| import { enumLocation } from '@/enum/location';
|
| export default {
| props: {
| // 是否在首选项处添加“全部”选项
| allOption: {
| type: Boolean,
| default: true
| },
| // 查询的行政级别，取值1，2，3，4
| level: {
| type: Number,
| default: 4
| },
| // 结果返回
| value: Object,
| // 是否默认返回初始选项
| initValue: {
| type: Boolean,
| default: true
| },
| // 能否选择任意一级选项
| checkStrictly: {
| type: Boolean,
| default: true
| },
| prop: String
| },
| emits: ['update:value'],
| data() {
| return {
| locations: enumLocation(this.allOption, this.level),
| optionProps: {
| checkStrictly: this.checkStrictly
| }
| };
| },
| computed: {
| placeholder() {
| const list = '省/市/区/镇'.split('/');
| const p = [];
| for (let i = 0; i < this.level; i++) {
| p.push(list[i]);
| }
| return p.join('/');
| },
| formatedValue() {
| return this.optionFormatReverse(this.value);
| }
| },
| methods: {
| handleChange(value) {
| this.$emit('update:value', this.optionFormat(value));
| },
| /**
| * 地区选项结果格式化
| */
| optionFormat(val) {
| const res = {
| pCode: null,
| pName: null,
| cCode: null,
| cName: null,
| dCode: null,
| dName: null,
| tCode: null,
| tName: null
| };
| if (val.length > 0) {
| res.pCode = val[0][0];
| res.pName = val[0][1];
| }
| if (val.length > 1) {
| res.cCode = val[1][0];
| res.cName = val[1][1];
| }
| if (val.length > 2) {
| res.dCode = val[2][0];
| res.dName = val[2][1];
| }
| if (val.length > 3) {
| res.tCode = val[3][0];
| res.tName = val[3][1];
| }
| return res;
| },
| optionFormatReverse(val) {
| const res = [];
| if (val) {
| if (val.pName) {
| res.push([val.pCode, val.pName]);
| }
| if (val.cName) {
| res.push([val.cCode, val.cName]);
| }
| if (val.dName) {
| res.push([val.dCode, val.dName]);
| }
| if (val.tName) {
| res.push([val.tCode, val.tName]);
| }
| }
| return res;
| }
| },
| mounted() {
| if (this.initValue) {
| if (this.checkStrictly) {
| this.handleChange([this.locations[0].value]);
| } else {
| const f = (location) => {
| if (location.children && location.children.length > 0) {
| const r = f(location.children[0]);
| r.unshift(location.value);
| return r;
| } else {
| return [location.value];
| }
| };
| this.handleChange(f(this.locations[0]));
| }
| }
| }
| };
| </script>
|
|
