链接到其他集合项的集合 + JSON 项

Question

我正在nodejs中做一个REST web服务器，我想用Collection+JSON作为超媒体类型来实现它。

然而，我不明白是否可以在集合中表示1到n的关系。所以，例如，如果我有一个收集篮，是否可以使篮中的项目指向其他定义集合的项目？

Answer 1

您可以使用collection链接关系，它被描述为：

指代表集合的资源当前资源是成员。

这似乎满足了你的需要。

Answer 2

使用传统的电子商务示例，以下是如何构建产品的集合JSON端点。请注意，您的客户端应该使用rel标记进行分组。您的rel标签列表就是您与客户的"合同"。"这个rel标签总是意味着这一点。"

"collection":
{
  "href": "/products/1234.json",
  "items":
  [
    {
      "name": "name",
      "value": "10 Speed Bike"
    }
    {
      "name": "manufacturer",
      "value": "Schwin"
    }
    {
      "name": "price",
      "value": 150.00
    }
  ],
  "links":
  [
    {
      "href": "/products/1234/attachments/flier.pdf",
      "rel": "attachment",
      "prompt": "Flier from the Manufacturer",
      "render": "link"
    },
    {
      "href": "/products/1234/attachments/specs.pdf",
      "rel": "attachment",
      "prompt": "Spec Sheet from Manufacturer",
      "render": "link"
    },
    {
      "href": "/products/1234/attachments/warranty.pdf",
      "rel": "attachment",
      "prompt": "Limited Lifetime Warranty",
      "render": "link"
    },
    {
      "href": "/store/attachments/returns.pdf",
      "rel": "attachment",
      "prompt": "Our Return Policy",
      "render": "link"
    },
    {
      "href": "/images/1235478324.png",
      "rel": "product-image",
      "prompt": "A Schwin 10-speed bike in red",
      "render": "image"
    },
    {
      "href": "/images/1235478355.png",
      "rel": "product-image",
      "prompt": "A girl riding a 10-speed bike.",
      "render": "image"
    },
    {
      "href": "/images/1235478385.png",
      "rel": "product-image",
      "prompt": "A grandma watching grandkids ride bicycles.",
      "render": "image"
    },
    {
      "href": "/images/1235478545.png",
      "rel": "swatch",
      "prompt": "Radiant Red",
      "render": "image"
    },
    {
      "href": "/images/1235478545.png",
      "rel": "swatch",
      "prompt": "Brilliant Blue",
      "render": "image"
    },
    {
      "href": "/images/1235478588.png",
      "rel": "swatch",
      "prompt": "Stunning Silver",
      "render": "image"
    },
    {
      "href": "/blog/2014/07/26",
      "rel": "content",
      "prompt": "Our store now sells Schwin bicycles!",
      "render": "link"
    },
    {
      "href": "/manufacturers/schwin",
      "rel": "manufacturer",
      "prompt": "Schwin",
      "render": "link"
    },      ]
}

在这个例子中，客户会知道"swatch"rel标签的存在意味着它应该显示颜色样例部分。。。每个"rel-tag"一个样例。如果有一个样例与多个样例，您的客户端甚至可能会呈现不同的效果。

您想要扩展collection+JSON（我已经对其进行了广泛的扩展），这是情有可原的。collection+JSON的详细语法（我最初认为这是一个问题）实际上提供了一种在保持向后兼容性的同时进行扩展的好方法。