API implemented using ODataController does not return the complete object in output

Question

I have implemented an API using the ODataController

When I hit the API at https://localhost:4046/v1/Search, I am only able to get the backupId and count in the GranularSeachResult object. The RestorePoints aren't returned, even though they are getting set and I have double checked that.

What is the reason they are not coming? Is there some change needed in postman route or in code to show the complete GranularSearchResult with complete information about RestorePoint?

I even tried using https://localhost:4046/v1/Search?$expand=restorePoint

But still I am not able to get the restorePoints in the output.

I tried adding ComplexType for restorePoint but that causes an error, saying entity type is already registered. I need the entityType in startup.cs for RestorePoints and don't want to change it.

Any help would be appreciated.

Answer 1

Most likely is that OData are not configured correctly as by default functions are disabled.

You can use ENableQuery attribute on top of the endpoint/method. There are lot of parameters you can use to enable/disable functionality.

[EnableQuery]
public async Task<ActionResult> PostAsync([FromBody] BackupSearchRequest request)
{
    ...
}

or you can configure through IRouteBuilder extension method that will enable expanding globally. Again there are many extension methods you can use to configure OData routing.

app.UseMvc(routeBuilder =>
{
    routeBuilder.Expand();
});

More info:

EnableQueryAttribute

OData Expand