如何使用OData在单个POST请求中正确创建和链接一对一关系 [英] How to properly create and link a one-to-one relationship in single POST request with OData
问题描述
这个问题也在
StackOverflow 。
在OData：Operations文档中，
第2.4节第4段向下，它在使用POST创建实体时读取，也可以在同一请求中创建链接。但是，我在努力完成这项工作时遇到了麻烦。类似的问题已经被问到在创建时多对多链接
，看起来如果没有批量请求，这种情况是不可能的。以下是我尝试使用此方法创建的方案 示例
OData读写服务。
In the OData:Operations documentation, section 2.4 fourth paragraph down, it reads when creating an entity with POST it is also possible to create a link within the same request. However, I'm having trouble trying to make this work. A similar question has been asked about many-to-many linking while creating and it looks like that particular scenario isn't possible without a batch request. Below is the scenario I'm trying to create using this sample OData read write service.
创建名为"测试产品"的新产品并使用JSON在单个POST中将其链接到Category（0）。
Create a new Product named "Test Product" and link it to Category(0) in a single POST using JSON.
我试过...
POST /OData/OData.svc/Products HTTP / 1.1
接受：application / json
内容类型：application / json
{" ID"：99，" Name"： "试验产品与QUOT;，"描述" ;:"简单测试与QUOT;，" RELEASEDATE" ;:" \ /日期（1210204800000）\ /"，" DiscontinuedDate" ;:空，"评价" ;: 3 ，"价格"："99.99"，"类别"：""http：//services.odata.org/OData/OData.svc/Categories（0）"
}
和...
{" ID"：99，" Name"：" Test Product" ，"描述" ;:"简单测试与QUOT;，" RELEASEDATE" ;:" \ /日期（1210204800000）\ /"，" DiscontinuedDate" ;:空，"评价" ;: 3，"价格" ："99.99"，"类别"：{" uri"：" http：//services.odata.org/OData/OData.svc/Categories（0）"}
}
两者都会导致失败。
任何帮助将不胜感激。提前致谢。
推荐答案
以下适用于我。 您需要把类别的URI在" __元数据"
The following works for me. You need to put the category uri in "__metadata".
POST
http://services.odata.org/(S(bo5ox0nxweq24pbgqkeogwt0))/OData/Odata.svc/Products
接受：application / json
内容类型：application / json
Accept: application/json
Content-Type: application/json
{
" __ metadata"：{" uri"： " http://services.odata.org/OData/OData.svc/Products(99）"，" type"：" ODataDemo.Product"}，
" ID"：99，" Name"：" Bread"，" Description"： "全谷物面包"，"DiscontinuedDate"：null，"Rating"：4，"Price"："2.5"，"
""类别"：{" __ metadata" ：{" uri"：" http：// ser vices.odata.org/(S(bo5ox0nxweq24pbgqkeogwt0))/OData/OData.svc/Categories(0 ）"}}
}
{
"__metadata": {"uri": "http://services.odata.org/OData/OData.svc/Products(99)", "type": "ODataDemo.Product"},
"ID": 99, "Name": "Bread", "Description": "Whole grain bread", "DiscontinuedDate": null, "Rating": 4, "Price": "2.5",
"Category": { "__metadata": {"uri": "http://services.odata.org/(S(bo5ox0nxweq24pbgqkeogwt0))/OData/OData.svc/Categories(0)"}}
}
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