解决 Vant中 输入框（Field）组件获取不到输入值

<template>
  <view class="fill-wrap">
    <van-cell-group>
      <van-field  autosize required type="text" placeholder="请输入通过原因" @input="getFieldValue"/>
    </van-cell-group>
  </view>
</template>
<script>
export default {
  data() {
    return {
      fieldValue:'',
    };
  },
  methods: {
    getFieldValue(e){
      console.log(e)
      this.fieldValue = e.detail
    },
  }
}
</script>