I have an OData method and I want to return a List of entities from that method.
This is my code
public async Task<IHttpActionResult> LoadSpecimenMachinings([FromODataUri] Int32 key)
{
if (!ModelState.IsValid)
return BadRequest(ModelState);
Int32 stage = 1;
string csvSpecimenCodes = "S0,S1,S2";
List<Machining> machinings = null;
var machiningResult = db.LoadSpecimenMachinings(key, stage, csvSpecimenCodes);
machinings = (from machining in machiningResult select machining).ToList();
return Created(machinings);
}
When I returned a List of entities (Machining is an entity in my Entity Framework Model) in the line return Created(machinings);
I received the following error:
"message":" is not an entity type. Only entity types are supported.",
"type":"System.InvalidOperationException"
As I understand, unfortunately Created
cannot receive a List of Entities as parameter.
Is there any way to return a list of entities and a Created HTTP Code in OData ?
I am using OData V3 and Entity Framework 6.
return Created()
is designed to only return a single element and for use when you do an insert, this returns a 201 Created
status code
You should use return Ok(machinings)
this returns a 200 OK
status code
See the OData specification on response code http://docs.oasis-open.org/odata/odata/v4.0/errata02/os/complete/part1-protocol/odata-v4.0-errata02-os-part1-protocol-complete.html#_Toc406398250