index_1.vue
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<template>
<view class="ncc-cascader">
<u-input type="select" :select-open="selectShow" v-model="innerValue" :placeholder="placeholder"
@click="openSelect"></u-input>
<u-select :list="options" v-model="selectShow" mode="mutil-column-auto" @confirm="selectConfirm"
:value-name="props.value" :label-name="props.label" :child-name="props.children"
:default-value="defaultValue" />
</view>
</template>
<script>
export default {
name: 'ncc-cascader',
model: {
prop: 'value',
event: 'input'
},
props: {
value: {
type: Array,
default: () => []
},
options: {
type: Array,
default: () => []
},
placeholder: {
type: String,
default: '请选择'
},
props: {
type: Object,
default: () => ({
label: 'fullName',
value: 'id',
children: 'children'
})
},
disabled: {
type: Boolean,
default: false
}
},
data() {
return {
selectShow: false,
innerValue: '',
defaultValue: []
}
},
watch: {
options() {
this.setDefault(this.value)
},
value(val) {
this.setDefault(val)
}
},
created() {
this.setDefault(this.value)
},
methods: {
setDefault(value) {
if (!value.length) return this.innerValue = ''
let options = this.$u.deepClone(this.options)
let defaultValue = []
let label = ''
outer: for (let i = 0; i < value.length; i++) {
inter: for (let j = 0; j < options.length; j++) {
if (value[i] == options[j][this.props.value]) {
defaultValue.push(j)
label += (!label ? '' : '-') + options[j][this.props.label]
if (options[j].children) options = options[j].children
break inter
}
}
}
this.innerValue = label
this.defaultValue = defaultValue
},
openSelect() {
if (this.disabled) return
this.selectShow = true
},
selectConfirm(e) {
this.innerValue = ''
let value = []
for (let i = 0; i < e.length; i++) {
value.push(e[i].value)
}
this.setDefault(value)
this.$emit('input', value)
this.$emit('change', e)
}
}
}
</script>
<style lang="scss" scoped>
.ncc-cascader {
width: 100%;
}
</style>