在antd中form 的rules限制输入为数字

                  <td>排序</td>
                  <td>
                    <FormItem>
                      {getFieldDecorator('ordering', {
                        rules: [{required:true, pattern: new RegExp(/^[1-9]\d*$/, "g"),message: '请输入数字!' }],
                        getValueFromEvent: (event) => {
                          return event.target.value.replace(/\D/g,'')
                        },
                        initialValue :dictionary.ordering
                      })(
                        <Input  placeholder="排序"/>
                      )}
                    </FormItem>
                  </td>