ant-design-vue 强制调用校验规则

在适当的时候调用单个字段的调用规则，该调用视为对该字段所有校验规则的手动调用，可以自主把握时间，实现动态校验规则

    const _this = this
      getUserPage({ username: userName }).then(res => {
        const { records } = res
        if (records.length > 0) {
          this.$nextTick(() => {
            _this.isRepeat = true
            _this.form.validateFields(['username'], { force: true })  //手动调用字段校验
          })
        } else {
          _this.isRepeat = false
          _this.form.validateFields(['username'], { force: true })
        }
      })