vue提交select下拉框选中的值

<template>
  <div class="tab-container">
    <div class="filter-container" style="margin-bottom: 20px">
      <el-form
        :model="questionForm"
        ref="dataForm"
        label-position="left"
        label-width="90px"
        style="width: 400px; margin-left: 50px"
      >
        <el-form-item label="用户名" prop="userName">
          <el-input
            v-model="questionForm.userName"
            placeholder="请输入角色名称"
          />
        </el-form-item>
        <el-form-item label="昵称" prop="realName">
          <el-input v-model="questionForm.realName" placeholder="请输入昵称" />
        </el-form-item>
        <el-form-item label="部门">
          <el-select
            v-model="questionForm.organId"
            placeholder="请选择"
            style="width: 100%"
            @change="changeHandler"
          >
            <el-option
              v-for="item in getOrganList"
              :key="item.id"
              :label="item.organName"
              :value="item.id"
            >
            </el-option>
          </el-select>
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button type="primary" @click="createData()">确定</el-button>
      </div>
    </div>
  </div>
</template>
<script>
//调用接口
// import { getOrgan } from "@/api/alarm/query";
export default {
  data() {
    return {
      questionForm: {
        userName: "",
        realName: "",
        organName: "",
        organId: "",
      },
      getOrganList: [],
    };
  },
  created() {
    //加载部门
    this.getOrgan();
  },
  methods: {
    changeHandler(value) {
      const checkedItem = this.getOrganList.find((a) => a.id === value);
      this.questionForm.organName = checkedItem.organName;
    },
    //获取部门信息接口定义
    getOrgan() {
      const params = {
        organId: 1,
        authority: 1,
      };
      import("./mock").then((res) => {
        this.getOrganList = res.data.organs;
      });
    },
    //添加用户
    async createData() {
      const params =this.questionForm;
      alert(JSON.stringify(params));
    },
  },
};
</script>
<style scoped>
.tab-container {
  margin: 30px;
}
</style>

{
    "msg": "success",
    "code": 1,
    "data": {
        "organs": [
            {
                "id": 1,
                "organName": "部门1"
            },
            {
                "id": 2,
                "organName": "部门2"
            },
            {
                "id": 3,
                "organName": "部门3"
            },
            {
                "id": 4,
                "organName": "部门4"
            },
            {
                "id": 5,
                "organName": "部门5"
            },
            {
                "id": 6,
                "organName": "部门6"
            },
            {
                "id": 7,
                "organName": "部门7"
            },
            {
                "id": 8,
                "organName": "部门8"
            }
        ]
    }
}