Nested entity property not returned in Created(201)

[denious]

Unable to return a nested entity property as part of a Created(201) response.

Assemblies affected

Microsoft.AspNetCore 2.1.6
Microsoft.AspNetCore.Mvc 2.1.3
Microsoft.AspNetCore.OData 7.1.0

Reproduce steps

• Create a blank web API project and import OData packages
• Add two entity types, A and B, and a complex type C
• Add properties reference B and C inside A
• Add a CRUD controller for A
• Send a POST request for A and return the created object using the built-in Created() method
• The returned JSON is populated for the complex type C but the entity type B property is not returned

Expected result

The returned JSON is populated for both the complex type C and the entity type B properties

Actual result

The returned JSON is populated for the complex type C but the entity type B property is not returned

Additional detail

I tried playing with the expand option (fluent syntax, property decorator, automatic expansion) but that doesn't affect the response

[jbendler]

why is this still broken 5 years later?

[robertmclaws]

I can't speak for the team, but I don't know that this will ever be "fixed". While inconvenient, the filters that are applied in the pipeline will automatically drop off any objects that are not a part of the direct filter chain. The side-effect is that if you post a complex object like that, you will only get some of the results back.

Not sure if you can post to an EntitySet with an $expand in it.

[DimaMegaMan]

Seems like it finally works! #2765