How to remove "@odata.navigationLink" from response after "$expand=entity" or "$expand=*"?

[AndriiLesiuk]

Hi

I implemented adding "@odata.navigationLink", with this:
https://github.com/OData/AspNetCoreOData/issues/1022

Everything works fine, @odata.navigationLink are generated for all nested entities.

But when I do the $expand command, I expect that after that the @odata.navigationLink will not be generated for the entity being expanded.
The same goes for $expand=* - I expect all @odata.navigationLinks to not be present in the response.
There will be only objects.
Expected:
https://localhost:7233/odata/TestEntity(1)

{
    "@odata.context": "https://localhost:7233/odata/$metadata#TestEntity",
    "value": [
        {
            "document_id": "10",
            "name": "test data"
            "[email protected]": "https://localhost:7233/odata/TestEntity('1')/nestedEntity"
        }
    ]
}

https://localhost:7233/odata/TestEntity(1)?$expand=nestedEntity

{
    "@odata.context": "https://localhost:7233/odata/$metadata#TestEntity",
    "value": [
        {
            "document_id": "10",
            "name": "test data",
            "nestedEntity": {
                    "id": "1",
                    "name": "test name"
            }
        }
    ]
}

Actual:
https://localhost:7233/odata/TestEntity(1)

{
    "@odata.context": "https://localhost:7233/odata/$metadata#TestEntity",
    "value": [
        {
            "document_id": "10",
            "name": "test data"
            "[email protected]": "https://localhost:7233/odata/TestEntity('1')/nestedEntity"
        }
    ]
}

https://localhost:7233/odata/TestEntity(1)?$expand=nestedEntity

{
    "@odata.context": "https://localhost:7233/odata/$metadata#TestEntity",
    "value": [
        {
            "document_id": "10",
            "name": "test data",
            "[email protected]": "https://localhost:7233/odata/TestEntity('1')/nestedEntity",  -- @odata.navigationLink is also here
            "nestedEntity": {
                    "id": "1",
                    "name": "test name"
            }
        }
    ]
}

I would be grateful for any advice.
(Editing and deleting the response in the middleware is not suitable for me, because I will be working with huge amounts of data, and it will destroy my performance)
Thanks.

[mikepizzo]

Unfortunately, we don't currently have a setting for conditionally writing the navigation link depending on whether or not the navigation property was expanded.

The best way I can think of to implement this behavior would be to not set the followsConvention to false in the model but instead to override the resource serializer and explicitly set the navigation links for any non-expanded navigation properties.

I believe that @xuzhg has some examples that show how to override the resource serializer to provide such custom behavior.

[AndriiLesiuk]

@mikepizzo thanks)
Then I'm waiting for examples @xuzhg here)