OData in Core 3.1 - route confusion

note.md

These folks seem to think [controller] works in [ODataRoutePrefix("todo")] public TodoController : ODataController

• https://stackoverflow.com/questions/51809295/net-core-2-1-odatarout-not-working
• dotnet/aspnet-api-versioning#209

This seems to work:

• [ODataRoutePrefix("todo")] public TodoController : ODataController
  • more complete sample see https://stackoverflow.com/a/63852770/195755

This DOES NOT work, as far as I know:

• [ODataRoutePrefix("[controller]")] public TodoController : ODataController
• vs [Route("[controller]")][ApiController] public TodoController
  • generated REST API
  • CRUD API from scaffolding

But the latter would be a MAJOR UPGRADE to allow conventions to be used in routes.

Based on:

• all the same benefits of convention-based routing, which ASP.NET Core team has convinced this community is a big win
• it is VERY common the controller is named for entity set, just like REST APIs
• web API generators emit [controller], makes it easier to change from [Route("[controller])"] to [ODataPrefix("[controller]")]
• I can't get OData default convention-based routing to work in ASPNET Core. If convention-based routing for ~/api/todo(10) or ~/odata/todo(10) worked then this would not be nesssary.

The above PR addresses ActionSelector, which affects all routes, not just convention-based routes. Not sure if it affects batching, but I assume it does.