实现点击是否进行自定义校验, 当选择时间之后点击确定自动关闭校验,

  <t-form-item label-width="150px" label="是否账期用户" name="settlementType">
      <div class="flex items-center">
        <d-checkbox
          v-model="formData.settlementType"
          :value="settlementType"
          :activeValue="settlementTypeActive"
        ></d-checkbox>
        <div v-if="formData.settlementType == settlementTypeActive">
          <t-select
            clearable
            v-model="formData.settlementPeriodType"
            :options="paymentDaysList"
            placeholder="请选择账期"
            class="w-170px"
          ></t-select>
        </div>
      </div>
    </t-form-item>

const INIT_STATUS = {
  settlementType: 2,
  settlementPeriodType: '',
}
const formData = ref({ ...INIT_STATUS })  
settlementType: [
    { required: true, message: '请选择账期', trigger: 'blur' },
    {
      validator: (value) => {
        if (value == 1 && !formData.value.settlementPeriodType) {
          return false
        } else {
          return true
        }
      },
      message: '请选择账期'
    }
  ]

逻辑:  利用 t-form-item 的 name属性绑定, 同时在rules下方定义规则, 使用 validator 自定义校验 判断check的值是否为服务器需要的值 , 我这边为选中是2 ,选中是1 , 默认定义值未2,判断check的值为1并且账期下拉select框为空是 就为false, 反知为true