如何为json请求对象指定可选元素

Question

在API蓝图中，我希望为POST消息指定可选的json元素。 示例;

    ### Add a new User [POST]
    To add a User send a JSON .....

    + Request (application/json)

    {
         "name": "A name",
         "age": 30
    }

如何向API的读者表明API调用中的年龄是可选的，但仍然显示它是一个整数？

〜科林

Answer 1

我推荐像这样的文档字段表。

### Source Fields

| field      | required | type | example                                | description |
|------------|:-:|-------------|----------------------------------------|-------------|
| name       | * | string      | `average-lead-time-frontend`           | Unique name for machines, used as reference key and for url usage. |
| title      | * | string      | `Average Lead Time Frontend`           | Title for humans. |
| sourcetype | * | string      | `team-avgLeadTime`                     | Source type identificator. |
| groups     |   | list        | `["engagement-analytics", "builder"]`  | List of groups where entity is member. |
| options    |   | object      | `{ "team": 21926 }`                    | Addition options for sourcetype. |
| data       |   | list        | `[70.3, 31.8]`                         | Actual data held by Source. |

生成的字段表：http://i.stack.imgur.com/cxocx.png

Answer 2

目前没有专门的支持这样做。然而，如何实现这一目标的方法很少。

我更倾向于使用你喜欢的降价格式在请求描述中讨论它，例如：

### Add a new User [POST]
To add a User send a JSON .....

+ Request (application/json)

    Data about user being created. Where age attribute is optional.

    + Body

            {
                 "name": "A name",
                 "age": 30
            }

或者也许：

To add a User send a JSON .....

+ Request (application/json)

    Data about user being created. With following attributes are:

    + `name` ... name of the user
    + `age` (optional) ... age of the user

    + Body

            {
                 "name": "A name",
                 "age": 30
            }

有关更多示例，请参阅http://docs.gtdtodoapi.apiary.io文件夹集合资源。

您还可以始终指定描述主体有效负载的JSON模式。请注意，讨论邮件正文属性的专用支持正在制作中（https://github.com/apiaryio/api-blueprint/issues/25）