element ui 穿梭框 如何获取右边框里的值绑定到formData里

当前我已经实现了数据左右穿梭，但是穿梭到又边框的数据，怎么能绑定到formData里呢。

```html
form-item label="索引名:" prop="indexName">
          input v-model="formData.indexName" v-on:change="getIndiciesFunc" :clearable="true" placeholder="请输入" />
        form-item>
form-item label="请选择:" prop="indexList">
          "['源端', '目标端']" v-model="rightCheckBox" :data="getIndiciesOptions">
        form-item>

const rightCheckBox = ref([])

const getIndiciesFunc = async() => {
  const res = await getElasticIndicies(formData.value)
  //if (res.code === 0) {
  // getIndiciesOptions = res.data.indexnameinfo
  res.data.indexnameinfo.forEach((indicies, index) => {
  getIndiciesOptions.push({
            label: indicies,
            key: index
          });
        });
  return {
        data: getIndiciesOptions,
        rightCheckBox: []
      };
  //}  
}

```

大佬们可以先用这完整的代码试一下，反正基本上我都试过了，就是不行，而且这里的穿梭框是要等函数触发后返回的值。不能直接放export default 里面吧。我不是不是搞前端的，麻烦直接给下代码。

<template>
  <div>
    <el-card>
    <template #header>
      <div></div>
      </template>
    <div class="gva-form-box">
      <el-form :model="formData" ref="elFormRef" label-position="right" :rules="rule" label-width="100px">
        <el-form-item label="项目名称:">
          <el-select v-model="formData.projectName" clearable placeholder="请选择">
    <el-option
      v-for="item in projectNameOptions"
      :key="item.project_name"
      :label="item.project_name"
      :value="item.project_name">
    </el-option>
  </el-select>
        </el-form-item>
        <el-form-item label="环境:" >
          <el-select v-model="formData.envName" clearable placeholder="请选择">
    <el-option
      v-for="item in environmentOptions"
      :key="item.value"
      :label="item.label"
      :value="item.value">
    </el-option>
  </el-select>
        </el-form-item>
        <el-form-item label="索引名:" prop="indexName">
          <el-input v-model="formData.indexName" v-on:change="getIndiciesFunc" :clearable="true" placeholder="请输入" />
        </el-form-item>
        <el-form-item label="请选择:" prop="indexList">
          <el-transfer :titles="['源端', '目标端']" v-model="rightCheckBox" :data="getIndiciesOptions"></el-transfer>
        </el-form-item>
        <el-form-item label="字段名:" prop="mappingName">
          <el-input v-model="formData.mappingName" :clearable="true" placeholder="请输入" />
        </el-form-item>
        <el-form-item label="字段类型:" >
          <el-select v-model="formData.mappingType"  clearable placeholder="请选择">
    <el-option
      v-for="item in mappingtypeOptions"
      :key="item.value"
      :label="item.label"
      :value="item.value">
    </el-option>
  </el-select>
        </el-form-item>
        <el-form-item label="初始值:" prop="initValue">
          <el-input v-model.number="formData.initValue" :clearable="true" placeholder="请输入" />
        </el-form-item>
        <el-form-item label="执行间隔(秒):" prop="gapTime">
          <el-input v-model="formData.gapTime" :clearable="true" placeholder="请输入" />
        </el-form-item>
        <el-form-item label="提交人:" prop="owner">
          <el-input v-model="formData.owner" :clearable="true" placeholder="请输入" />
        </el-form-item>
        <el-form-item>
          <el-button size="mini" type="primary" @click="save">保存</el-button>
          <el-button size="mini" type="primary" @click="back">返回</el-button>
        </el-form-item>
      </el-form>
    </div>
    </el-card>
  </div>
</template>

<script>
export default {
  name: 'Batchtask'
}
</script>

<script setup>
import {
  createBatchtask,
  updateBatchtask,
  findBatchtask
} from '@/api/batchtask'

import {getProjectList} from '@/api/project'
import {getElasticIndicies} from '@/api/batchtask'
import { nanoid } from 'nanoid'
import { useUserStore } from '@/pinia/modules/user'



// 自动获取字典
import { getDictFunc } from '@/utils/format'
import { useRoute, useRouter } from "vue-router"
import { ElMessage } from 'element-plus'
import { ref, reactive } from 'vue'
import { right } from '@popperjs/core'
const route = useRoute()
const router = useRouter()
const userStore = useUserStore()

const searchInfo = ref({})
const projectNameOptions = ref([])
const getIndiciesOptions = reactive([])
const rightCheckBox = ref([])
const userName = userStore.userInfo.nickName
let  idB = nanoid(6)

// 重置
const onReset = () => {
  searchInfo.value = {}
}

const type = ref('')
const formData = ref({
            projectName: '',
            envName: '',
            taskName: '',
            sourceName: '',
            owner: userName,
            taskStatus: 1,
            indexName: '',
            indexList: rightCheckBox,
            mappingType: '',
            mappingName: '',
            taskCode: idB,
            initValue:'',
            gapTime:'',
        })
// 验证规则
const rule = reactive({
})

const elFormRef = ref()

// 初始化方法
const init = async () => {
 // 建议通过url传参获取目标数据ID 调用 find方法进行查询数据操作 从而决定本页面是create还是update 以下为id作为url参数示例
    if (route.query.id) {
      const res = await findBatchtask({ ID: route.query.id })
      if (res.code === 0) {
        formData.value = res.data.rebatchtask
        type.value = 'update'
      }
    } else {
      type.value = 'create'
    }
}

init()
// 保存按钮
const save = async() => {
      elFormRef.value?.validate( async (valid) => {
         if (!valid) return
            let res
           switch (type.value) {
             case 'create':
               res = await createBatchtask(formData.value)
               break
             case 'update':
               res = await updateBatchtask(formData.value)
               break
             default:
               res = await createBatchtask(formData.value)
               break
           }
           if (res.code === 0) {
             ElMessage({
               type: 'success',
               message: '任务已创建'
             })
           }
           router.back()
       })
}


const getProjectNameFunc = async() => {
  const res = await getProjectList(formData.value)
  //if (res.code === 0) {
   projectNameOptions.value = res.data.list
  //}
}

getProjectNameFunc()

const getIndiciesFunc = async() => {
  const res = await getElasticIndicies(formData.value)
  //if (res.code === 0) {
  // getIndiciesOptions = res.data.indexnameinfo
  res.data.indexnameinfo.forEach((indicies, index) => {
  getIndiciesOptions.push({
            label: indicies,
            key: index
          });
        });
  return {
        data: getIndiciesOptions,
        rightCheckBox: [1, 4]
      };
  //}  
}


const environmentOptions = ref([{
          value: '开发',
          label: '开发'
        }, {
          value: '测试',
          label: '测试'
        }, {
          value: '生产',
          label: '生产'
        }])

const mappingtypeOptions = ref([{
          value: 'integer',
          label: 'integer'
        }, {
          value: 'double',
          label: 'double'
        }, {
          value: 'keyword',
          label: 'keyword'
        }, {
          value: 'date',
          label: 'date'
        }])
// 返回按钮
const back = () => {
    router.go(-1)
}

</script>


<style>
</style>

最好提供完整的页面代码，或者你说的这个问题，可以试试

 <el-transfer :titles="['源端', '目标端']" v-model="rightCheckBox" :data="getIndiciesOptions"></el-transfer>

v-model绑定的值修改成v-model="formData.rightCheckBox",然后js逻辑操作中使用formData.rightCheckBox去操作，不需要单独建rightCheckBox变量，从一开始就绑定到formData下

<template>
  <el-transfer v-model="value" :data="formData.data"></el-transfer>
</template>

<script>
export default {
  data() {
    const generateData = _ => {
      const data = [];
      for (let i = 1; i <= 15; i++) {
        data.push({
          key: i,
          label: `备选项 ${ i }`,
          disabled: i % 4 === 0
        });
      }
      return data;
    };
    return {
      formData: {
        data: generateData()
      },
      value: [1, 4]
    };
  }
};
</script>