带OData的.NET 5核心实体框架控制器返回子对象和子对象

using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.OData.Query;

[Route("api/[controller]")]
[ApiController]
public class ProductsController : ControllerBase
{
    private readonly YourDbContext _context;

    public ProductsController(YourDbContext context)
    {
        _context = context;
    }

    [HttpGet]
    [EnableQuery]
    public IActionResult Get()
    {
        return Ok(_context.Products);
    }

    [HttpGet("{id}")]
    public IActionResult Get(int id)
    {
        var product = _context.Products.FirstOrDefault(p => p.Id == id);
        if (product == null)
        {
            return NotFound();
        }
        return Ok(product);
    }

    [HttpGet("{id}/subobjects")]
    [EnableQuery]
    public IActionResult GetSubObjects(int id)
    {
        var subObjects = _context.SubObjects.Where(s => s.ProductId == id);
        return Ok(subObjects);
    }
}

using Microsoft.AspNet.OData.Extensions;
using Microsoft.AspNet.OData.Builder;

public void ConfigureServices(IServiceCollection services)
{
    // ...

    services.AddControllers().AddOData(opt =>
    {
        opt.Count().Filter().OrderBy().Expand().Select().MaxTop(null);
        opt.EnableAttributeRouting = false;
        opt.AddRouteComponents("odata", GetEdmModel());
    });

    // ...
}

private static IEdmModel GetEdmModel()
{
    var builder = new ODataConventionModelBuilder();
    builder.EntitySet<Product>("Products");
    builder.EntitySet<SubObject>("SubObjects");
    return builder.GetEdmModel();
}