index.vue
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<template>
<div class="select-container">
<ElSelect
v-loading="loading"
v-bind="propsData"
:placeholder="placeholder"
:remote-method="fetchData"
:remote="remote"
:filterable="filterable"
:disabled="disabled"
@input="handleInput"
@focus="onFocus"
@blur="onBlur"
>
<ElOption
v-for="item in list"
:key="item[option.key]"
:label="item[option.label]"
:value="item[option.value]"
:disabled="disabledList && disabledList.includes(item[option.key])"
/>
</ElSelect>
</div>
</template>
<script>
/* eslint-disable */
export default {
props: {
value: [String, Number, Array, Boolean],
multiple: {
type: Boolean,
default: false
},
clearable: {
type: Boolean,
default: true
},
defaultName: {
type: String,
required: false,
default: null
},
placeholder: {
type: String,
required: false,
default: '请选择'
},
selectType: { // 必传,请求的接口
type: String,
required: true
},
requestParams: { // 非必传,接口请求的参数
type: [String, Number, Object, Array, Boolean],
required: false,
default: undefined
},
remote: { // 是否开启远程搜索
type: Boolean,
required: false,
default: false
},
filterable: {
type: Boolean,
required: false,
default: false
},
config: { // 非必传,设置options的value, name, label
type: Object,
required: false
},
exceptId: {//非必传,排除的属性
type: [String, Number],
required: false
},
optionFuncName: { // 非必传,如果一个api文件中有多个options方法,需要指定方法名
type: String,
required: false,
default: 'fetchOptions'
},
disabled: { // 是否能编辑
type: Boolean,
required: false,
default: false
},
customOption: { // 自定义选项
type: [Object, Array],
default: null
},
disabledList: { // 选项禁用列表
type: Array,
required: false,
default: null
},
defaultFirst: {
type: Boolean,
required: false,
default: false
},
remoteSearchKey: {
type: String,
default: 'value'
},
canInput: {
type: Boolean,
// eslint-disable-next-line vue/no-boolean-default
default: false
}
},
data() {
return {
loading: false,
list: []
}
},
computed: {
defaultValue() {
const defaultItem = this.list.length && this.list.find(item => item.name === this.defaultName)
if (this.list.length && this.defaultFirst === true && !this.defaultName) {
return this.list[0][this.option.key]
} else {
return defaultItem && defaultItem.id || null
}
},
option() {
return {
key: this.config && this.config.key || 'id',
label: this.config && this.config.label || 'name',
value: this.config && this.config.value || 'id'
}
},
remoteMethod() {
const selectType = this.selectType
const api = selectType && require('@/api/' + selectType)
if (!api) {
console.log('api不存在', selectType)
return
}
const optionFuncName = this.optionFuncName
const remoteMethod = optionFuncName && api['default'][optionFuncName]
if (!remoteMethod) {
console.log(api)
console.log('method不存在', remoteMethod)
return
}
return remoteMethod
},
propsData() {
return {
value: this.value,
filterable: true,
multiple: this.multiple,
clearable: this.clearable,
defaultFirstOption: true
}
}
},
created() {
this.fetchData && this.fetchData()
},
methods: {
onBlur(e) {
console.log('onBlur ---e', e.target.value, this.value)
if (this.canInput && !this.value) {
const value = e.target.value
this.handleInput(value)
}
},
onFocus() {
if (this.remote) {
// 解决远程搜索输入关键字后输入框失去焦点,关键词清空,再次点击输入框选项为上次搜索内容
this.fetchData()
}
},
fetchData(value) {
const remote = this.remote
const remoteMethod = this.remoteMethod
if (!remoteMethod) {
return
}
const requestParams = this.requestParams || {}
const query = (remote && value && typeof requestParams === 'object') ? {
...this.requestParams,
p: {
...this.requestParams?.p,
[this.remoteSearchKey]: value
}
} : this.requestParams
this.loading = true
remoteMethod(query).then(this.onFetchListSuccess)
},
onFetchListSuccess(response) {
this.list = Array.isArray(response.data) === true ? response.data : response.data.list
if (this.list && this.list.length === 0) {
this.$emit('empty', true)
}
this.list = this.list.length && this.list.filter(item => item[this.option.value] !== this.exceptId)
if (this.customOption) {
this.list.unshift(this.customOption)
}
if (!this.multiple && this.value && !(this.list && this.list.find(item => item[this.option.value] === this.value))) {
if (!this.canInput) {
this.handleInput(this.defaultValue)
}
}
if (this.multiple && this.value && this.value.length > 0) {
if (!this.remote) {
const value = this.value.filter(itemVal => this.list.find(item => item[this.option.value] === itemVal))
this.handleInput(value && value.length > 0 ? value : this.defaultValue ? [this.defaultValue] : [])
}
}
if (this.value === null || this.value === undefined) {
this.handleInput(this.defaultValue)
}
this.loading = false
},
handleInput(value) {
console.log('handleInput', value)
this.$emit('input', value)
if (!this.multiple) {
const option = this.list?.length ? this.list.find(item => item[this.option.value] === value) : {}
console.log('选择项', option)
this.$emit('select', option)
}
}
}
}
</script>