# 包含关联对象

使用include查询参数，我们能在Response中返回关联对象的详情。同样，我们能在任何路由中（传统CRUD路由，或关系路由），以及任何返回数据的HTTP方法中使用include参数。

返回结果会多一个“included”的key。

例：

Request:

```http
GET /persons/1?include=computers HTTP/1.1
Accept: application/vnd.api+json
```

Response:

```http
HTTP/1.1 200 OK
Content-Type: application/vnd.api+json

{
  "data": {
    "type": "person",
    "id": "1",
    "attributes": {
      "display_name": "JEAN <jean@gmail.com>",
      "birth_date": "1990-10-10"
    },
    "relationships": {
      "computers": {
        "data": [
          {
            "type": "computer",
            "id": "1"
          }
        ],
        "links": {
          "related": "/persons/1/computers",
          "self": "/persons/1/relationships/computers"
        }
      }
    },
    "links": {
      "self": "/persons/1"
    }
  },
  "included": [
    {
      "type": "computer",
      "id": "1",
      "attributes": {
        "serial": "Amstrad"
      },
      "relationships": {
        "owner": {
          "links": {
            "related": "/computers/1/owner",
            "self": "/computers/1/relationships/owner"
          }
        }
      },
      "links": {
        "self": "/computers/1"
      }
    }
  ],
  "links": {
    "self": "/persons/1"
  },
  "jsonapi": {
    "version": "1.0"
  }
}
```



我们也能在relationship中使用include。

例：

Request:

```http
GET /persons/1?include=computers.owner HTTP/1.1
Accept: application/vnd.api+json
```

Response:

```http
HTTP/1.1 200 OK
Content-Type: application/vnd.api+json

{
  "data": {
    "type": "person",
    "id": "1",
    "attributes": {
      "display_name": "JEAN <jean@gmail.com>",
      "birth_date": "1990-10-10"
    },
    "relationships": {
      "computers": {
        "data": [
          {
            "type": "computer",
            "id": "1"
          }
        ],
        "links": {
          "related": "/persons/1/computers",
          "self": "/persons/1/relationships/computers"
        }
      }
    },
    "links": {
      "self": "/persons/1"
    }
  },
  "included": [
    {
      "type": "computer",
      "id": "1",
      "attributes": {
        "serial": "Amstrad"
      },
      "relationships": {
        "owner": {
          "data": {
            "type": "person",
            "id": "1"
          },
          "links": {
            "related": "/computers/1/owner",
            "self": "/computers/1/relationships/owner"
          }
        }
      },
      "links": {
        "self": "/computers/1"
      }
    },
    {
      "type": "person",
      "id": "1",
      "attributes": {
        "display_name": "JEAN <jean@gmail.com>",
        "birth_date": "1990-10-10"
      },
      "relationships": {
        "computers": {
          "links": {
            "related": "/persons/1/computers",
            "self": "/persons/1/relationships/computers"
          }
        }
      },
      "links": {
        "self": "/persons/1"
      }
    }
  ],
  "links": {
    "self": "/persons/1"
  },
  "jsonapi": {
    "version": "1.0"
  }
}
```

尽管例子比较搞笑，但我们只是为了解释用法。