element-ui 远程搜索组件el-select在项目中组件化的实现代码

在项目中发现使用el-select时写的比较多重复代码，还有就是同一个页面使用el-select会出现label值会显示value值，
el-select组件化：

<template>
 <el-select
  :class="obj&&keyword[keywordAttr.label]? 'selected': ''"
  :value="keyword"
  :placeholder="obj && keyword[keywordAttr.label]? keyword[keywordAttr.label]: placeholder"
  filterable
  :clearable="clear"
  remote
  :multiple="multiple"
  :loading="selectLoading"
  :reserve-keyword="reserve"
  :remote-method="remoteMethod"
  :style="{width: width}"
  :disabled="disabled"
  :value-key="keywordAttr.id"
  @change="changeSelect"
  @clear="handleClear"
  @blur="handleBlur"
  @focus="handleFocus"
  @visible-change="handlerVisible"
 >
  <el-option
   v-for="item in keywordOptions"
   :key="item[keywordAttr.id]"
   :label="item[keywordAttr.label]"
   :value="obj? item: item[keywordAttr.value]"
   :disabled="item.disabled"
  >
   <slot :item="item"/>
  </el-option>
 </el-select>
</template>

<script>
export default {
 name: 'SelectRemote',
 props: {
  value: {
   type: [String, Object],
   default: ''
  },
  reserve: {
   type: Boolean,
   default: true
  },
  clear: {
   type: Boolean,
   default: false
  },
  disabled: {
   type: Boolean,
   default: false
  },
  multiple: {
   type: Boolean,
   default: false
  },
  selectLoading: {
   type: Boolean,
   default: false
  },
  width: {
   type: String,
   default: '100%'
  },
  keywordOptions: {
   type: Array,
   default: function() {
    return []
   }
  },
  keywordAttr: {
   type: Object,
   required: true,
   default: function() {
    return {
     id: '',
     label: '',
     value: ''
    }
   }
  },
  obj: {
   type: Boolean,
   default: false
  },
  placeholder: {
   type: String,
   default: function() { return '请输入关键词' }
  }
 },
 data() {
  return {
   keyword: this.value
  }
 },
 watch: {
  value(newVal) {
   this.keyword = newVal
  }
 },

 methods: {
  remoteMethod(query) {
   this.$emit('remoteMethod', query)
  },
  changeSelect(item) {
   this.$emit('changeSelect', item)
  },
  handleClear() {
   this.$emit('clear')
  },
  handleBlur() {
   this.$emit('blur')
  },
  handleFocus() {
   this.$emit('focus')
  },
  handlerVisible() {
   this.$emit('visible-change')
  }
 }
}
</script>

<style lang="scss" scoped>
.selected ::-webkit-input-placeholder{
 color: #606266 !important;
}
</style>

主要是使用了placeholder来显示；

在父组件中:

<SeletcRemote
       v-model="nodeOperate.saleEmp"
       :keyword-attr="nodeObjPerson"
       :keyword-options="empOptions"
       :clear="true"
       :obj="true"
       :select-loading="selectLoading"
       @remoteMethod="remoteMethod"
       @changeSelect="handleProductChange($event, nodeOperate, 'saleEmp')"
      />

nodeObjPerson: {
  id: 'id',
  label: 'empName'
  }

handleProductChange(val, row, field) {
   this.$set(row, field, val)
  }

可以在单选的的状态下完美解决了label显示值；

在多选状态下如何显示？

multipletrue时，暂时无法解决；只是使用了另一个组件：vue-multiselect

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