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| <template>
| <el-cascader
| v-if="visible"
| :props="props"
| :placeholder="placeholder"
| v-model="value"
| :clearable="clearable"
| @change="$emit('change')"
| @input="handleInput"
| ></el-cascader>
| </template>
|
| <script>
| import { fetchByParentId } from '@/api/system/location'
|
| export default {
| name: 'LocationSelect',
| props: {
| placeholder: {
| default: '请选择地区'
| },
| level: {
| default: 3
| },
| clearable: {
| default: false
| },
| // 省
| provinceId: {},
| // 市
| cityId: {},
| // 区
| areaId: {}
| },
| data () {
| const vm = this
| return {
| // 是否展示，用于重新初始化cascader
| visible: true,
| // 已选值
| value: [],
| // 组件配置
| props: {
| lazy: true,
| lazyLoad (node, resolve) {
| const { level } = node
| fetchByParentId(level === 0 ? -1 : node.value)
| .cache()
| .then(data => {
| resolve(data.map(item => {
| return {
| label: item.name,
| value: item.id,
| leaf: level >= vm.level - 1
| }
| }))
| })
| .catch(e => {
| vm.$tip.apiFailed(e)
| })
| }
| }
| }
| },
| watch: {
| provinceId (newValue) {
| this.value[0] = newValue
| if (this.level === 1) {
| if (newValue == null) {
| this.value = []
| }
| this.__rebuild()
| }
| },
| cityId (newValue) {
| if (this.level >= 2) {
| this.value[1] = newValue
| }
| if (this.level === 2) {
| if (newValue == null) {
| this.value = []
| }
| this.__rebuild()
| }
| },
| areaId (newValue) {
| if (this.level >= 3) {
| this.value[2] = newValue
| }
| if (this.level === 3) {
| if (newValue == null) {
| this.value = []
| }
| this.__rebuild()
| }
| }
| },
| methods: {
| handleInput (values) {
| this.$emit('update:province-id', values[0])
| this.$emit('update:city-id', values[1])
| this.$emit('update:area-id', values[2])
| },
| // 重新初始化cascader
| __rebuild () {
| this.visible = false
| this.$nextTick(() => {
| this.visible = true
| })
| }
| }
| }
| </script>
|
|
