React开发（149）:ant design控制是否必填

  <Form.Item label="原因">
            {getFieldDecorator(
              'signInResson',
              form.getFieldsValue().signStatus === QS_TESHU ||
                form.getFieldsValue().signStatus === JS_TESHU
                ? {
                    initialValue: '',
                    rules: [{ required: true, message: '请填写原因' }],
                  }
                : { rules: [{ message: '请填写原因' }] }
            )(
              <Select style={{ width: '100%' }}>
                {ResultYyList.map((item) => (
                  <Select.Option key={item.key} value={item.key}>
                    {item.value}
                  </Select.Option>
                ))}
              </Select>
            )}
          </Form.Item>