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<!--element下拉列表封装
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使用：
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<hyb-select ref="hybSelect"
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url="/v1/orgs"
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v-model="search.orgId" option="orgId" label="orgName"
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placeholder multiple localOptions></hyb-select>
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1.url:要显示的下拉列表数据来源
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规范：返回的数据要符合(JSON中对应的字段必须：label和value,不能其他)
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[
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{label:'显示1',value:'值1'},
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{label:'显示2',value:'值2'},
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{label:'显示3',value:'值3'},
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...
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]
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2.v-model数据的双向绑定,绑定父组件中的字段
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3.option自定义select的value对应的字段
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4.label自定义select的label对应的字段
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5.placeholder下拉列表提示
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6.multiple是否是多选
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7.localOptions使用本地的数据,不用请求远程数据,注意：使用该属性时Url属性不能要,不然无效
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-->
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<template>
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<div>
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<el-select v-model="selectValue"
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:clearable="clearable"
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:collapse-tags="collapseTags"
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filterable
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class="filter-item"
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:placeholder="placeholder"
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:disabled="disabled"
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:multiple="multiple == null ? false : true"
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:remote="remoteFilter"
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:remote-method="remoteQuery"
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@change="change">
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<el-option v-for="(item, index) in options"
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:key="index"
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:label="getItemLabel(item, label)"
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:value="item[option]"
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:disabled="isDisabledOption(item)">
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<template v-if="mergeLabel">
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<span style="float: left">{{ getItemLabel(item, label) }}</span>
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<span style="float: right; color: #8492a6; font-size: 13px">{{ item[option] }}</span>
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</template>
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</el-option>
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<el-option v-if="totalPage > 1"
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label="搜索更多"
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value=""
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disabled />
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</el-select>
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</div>
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</template>
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<script>
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import request from '@/utils/request'
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import { getStorageItem } from '@/utils/storage';
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export default {
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props: {
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dictCode: null, // 当传入dictCode时，可以不用传递url
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url: null,
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method: null,
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queryParam: {
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type: Object,
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default: () => {
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return {}
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},
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},
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value: null,
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placeholder: null,
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label: {
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type: String,
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default: 'text',
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},
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option: {
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type: String,
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default: 'id',
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},
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multiple: null,
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localOptions: null,
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disabled: null,
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clearable: {
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type: Boolean,
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default: true,
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},
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collapseTags: {
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type: Boolean,
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default: false,
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},
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mergeLabel: {
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type: Boolean,
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default: false,
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},
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// 禁用的下拉选项
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disabledOptions: {
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type: String,
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default: () => {
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return ''
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},
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},
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// 使用远程搜索
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remoteFilter: {
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type: Boolean,
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default: false,
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},
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},
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data () {
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return {
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options: null,
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selectValue: null,
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// 如果是分页的，
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totalPage: 0,
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}
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},
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computed: {
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// 根据dictCode和url拼出最终的请求url
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requestUrl () {
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if (this.url != null && this.url.trim() != '') {
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if (this.url.indexOf('?') > 0) {
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if (this.option == null) {
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console.log('url-' + this.url.substring(this.url.indexOf('?')))
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}
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if (this.label == null) {
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}
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}
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return this.url
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}
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if (this.dictCode != null && this.dictCode.trim() != '') {
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return `/meta/gaeaDict/select/${this.dictCode}`
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}
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return null
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},
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},
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watch: {
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value: function (val, oldVal) {
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if (this.multiple != null) {
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if (!this.value) {
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this.selectValue = []
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} else {
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this.selectValue = this.value
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}
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} else {
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if (this.value != null && this.value != undefined) {
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this.selectValue = this.value
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} else {
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this.selectValue = ''
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}
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}
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},
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url () {
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setTimeout(() => {
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this.queryData()
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}, 500)
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},
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},
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created () {
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if (this.multiple != null) {
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this.selectValue = this.value
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} else {
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if (this.value != null) {
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this.selectValue = this.value
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}
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}
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},
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mounted () {
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if (this.requestUrl == null) {
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this.options = this.localOptions
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return
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}
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this.queryData()
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},
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methods: {
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// 判断选择是否已经禁用
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isDisabledOption (option) {
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if (option == null || this.disabledOptions == null || this.disabledOptions.length == 0) {
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return false
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}
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var currentOptionVal = option[this.option]
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return this.disabledOptions.indexOf(currentOptionVal) >= 0
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},
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change (value) {
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if (value === '') {
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value = null
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}
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this.$emit('input', value)
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// 根据当前值，找出对应的选项
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var optionItem = this.options.find((item) => item[this.option] == value)
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this.$emit('change', value, optionItem)
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},
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// 根据用户配置的label，生成对应的标签
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getItemLabel (item, label) {
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if (label.indexOf('${') < 0 && label.indexOf('}' < 0)) {
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return item[label]
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}
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var reg = /\$\{[a-zA-Z0-9]*\}/g
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var list = label.match(reg)
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// ["${id}", "${text}"]
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var result = label
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for (var i = 0; i < list.length; i++) {
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var sub = list[i]
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var key = sub.replace('${', '').replace('}', '')
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result = result.replace(sub, item[key])
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}
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return result
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},
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// 从本地localStorage取 gaeaDict
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getOptionsFromLocalStorage () {
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var dicts = getStorageItem('gaeaDict')
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var options = []
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if (!dicts.hasOwnProperty(this.dictCode)) {
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return []
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}
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var dictItems = dicts[this.dictCode]
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for (var i = 0; i < dictItems.length; i++) {
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var dictItem = dictItems[i]
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options.push({ id: dictItem.id, text: dictItem.text })
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}
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return options
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},
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queryData () {
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// 所有从本地localStorage取，因为在App.vue中已经请求远程保存到本地了
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var options = this.getOptionsFromLocalStorage()
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if (this.isNotBlank(options)) {
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this.options = options
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return
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}
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// 本地localStorage取不到，再从远程接口取
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if (this.requestUrl == null) {
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return
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}
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if (this.method != null && this.method.toLocaleLowerCase().trim() == 'post') {
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this.queryDataByPost()
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} else {
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this.queryDataByGet()
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}
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},
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queryDataByGet (keyword) {
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var param = this.deepClone(this.queryParam)
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if (this.isNotBlank(keyword)) {
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param['keyword'] = keyword
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}
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param['multiple'] = this.multiple == null ? null : 1
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request({
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url: this.requestUrl,
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headers: { noPrompt: true },
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params: param,
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}).then((response) => {
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this.setOptions(response.data)
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})
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},
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queryDataByPost (keyword) {
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var param = this.deepClone(this.queryParam)
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if (this.isNotBlank(keyword)) {
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param['keyword'] = keyword
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}
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request({
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url: this.requestUrl,
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method: 'post',
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headers: { noPrompt: true },
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data: param,
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}).then((response) => {
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this.setOptions(response.data)
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})
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},
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setOptions (resData) {
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if (resData == null || resData.length == 0) {
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this.options = []
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this.totalPage = 0
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return
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}
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if (this.isArray(resData)) {
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this.options = resData
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this.totalPage = 1
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return
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}
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if (resData.records == null || resData.total == null || resData.pages == null) {
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this.options = []
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return
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}
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this.totalPage = resData.pages
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// resData.records
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// resData.total
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// resData.size
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// resData.current
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this.options = resData.records
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},
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remoteQuery (keyword) {
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if (this.isBlank(keyword)) {
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return
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}
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setTimeout(() => {
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if (this.method != null && this.method.toLocaleLowerCase().trim() == 'post') {
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this.queryDataByPost(keyword)
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} else {
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this.queryDataByGet(keyword)
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}
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}, 200)
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},
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},
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}
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</script>
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