element ui Cascader 级联选择器 多选获得选中的id

       <el-cascader
                style="width: 100%"
                clearable
                class="selectWidth"
                ref="cascaderRef"
                v-model="OrganizatioChooseList"
                //数据
                :options="standardDocOrganizationData"
                :props="cascader"
                multiple
                @change="OrganizatioChoose"
              ></el-cascader>

           data{
              return{
		            OrganizatioChooseList:[],
		            value :'',
,		            //改变label
			        cascader: {
			        value: "id",
			        label: "label",
			        multiple: true,
			        checkStrictly: true,
			      },
              }},
		  methods: {
			 OrganizatioChoose(val) {
			      this.$nextTick(() => {
			      	//获取选中的node
			        const checkList = this.$refs.cascaderRef
			          ? this.$refs.cascaderRef.getCheckedNodes()
			          : [];
			          //转换成"1;2;3" 后端需要的数据
			          this.value = checkList.length > 0 ? checkList.map((x) => x.data.id).join(";") : ""
			      });
	    		},
		  }