.net - 使用 OData $select 从相关对象中挑选字段

Question

我正在将 WebAPI 2.2 与 OData V4 结合使用。

我可以使用 $filter=RelatedObj/PropertyName eq 'Some Value' 根据相关对象属性值过滤实体列表。

但是，当我尝试对 $select 使用相同的语法时:

$select=Id,Name,RelatedObj/PropertyName

结果异常:

"message": "The query specified in the URI is not valid. Found a path with multiple navigation properties or a bad complex property path in a select clause. Please reword your query such that each level of select or expand only contains either TypeSegments or Properties.",
"innererror": {
"message": "Found a path with multiple navigation properties or a bad complex property path in a select clause. Please reword your query such that each level of select or expand only contains either TypeSegments or Properties.",
"type": "Microsoft.OData.Core.ODataException",

这个问题能解决吗？

Answer 1

您可以使用 $expand 和嵌套 $select 查询选项来实现

$select=Id,Name&$expand=RelatedObj($select=PropertyName)

请参阅ODATA documentation