Vue Treeselect树形下拉框的使用小结

      <el-form-item label="父节点" v-model="formData.parentCategoryKey">
        <listBoxF>
          <template slot="content">
            <treeselect class="treeSelect-option" v-model="value" :multiple="multiple" :normalizer="normalizer" :options="list" placeholder="请选择" @select="selectNode" />
          </template>
        </listBoxF>
      </el-form-item>

    watch:{
      // 监听选中值的变化
      value:{
        deep:true,
        handler(val){
          this.$emit('getSelectVal',val)
        }
      }
    },

      // 自定义参数键值名称
      normalizer(node){
          //去掉children=[]的children属性
          if(node.children && !node.children.length){
              delete node.children;
          }
          return {
            id: node.categoryKey,
            label: node.categoryName,
            children: node.children,
            level: node.level
          }
      },

      selectNode(node){
        this.formData.level=node.level+1
        this.formData.parentCategoryKey=node.categoryKey || ''
        this.value=node.categoryKey
        console.log("selectNode(node)：",this.formData)
      },

    created(){
      // console.log(this.value,this.formData)
      this.getTree()
      this.reset()
      if(this.formData.parentCategoryKey){
        this.value=this.formData.parentCategoryKey
      }else{
        this.value=null
      }
    }

<template>
  <div class="clearfix list-box-f">
    <div class="text">
      <slot name="name"></slot>
    </div>
    <div class="cont">
      <slot name="content"></slot>
    </div>
  </div>
</template>
<script>
  export default {
    name: 'list-box-f'
  }
</script>
 
<style lang="scss" rel="stylesheet/scss">
  .list-box-f {
    margin-bottom: 20px;
    &:last-child {
      margin-bottom: 0;
    }
    .text {
      width: 144px;
      float: left;
      text-align: right;
      line-height: 32px;
      padding-right: 8px;
      >strong {
        color: #ff0000;
        padding-right: 4px;
      }
    }
    .cont {
      // width: calc(100% - 162px);
      float: left;
      .textarea-content {
        .v-input {
          textarea {
            min-height: 400px !important;
            font-size: 12px;
          }
        }
      }
      >.v-radio-group,>.ans-radio-group {
        padding-top: 7px;
      }
      >.v-input {
        textarea {
          height: 70px;
        }
      }
      .v-radio-group-item {
        font-weight: normal;
        margin-top: 1px;
      }
    }
  }
</style>