ASP.NET Core 3.0 3.0.100-preview9-014004-1 controller 405 Method Not Allowed

[vintzl]

While with ASP.NET Core 2.2 it works perfectly, with ASP.NET Core 3.0 Preview 9, with the same Controller, I get 405 Method Not Allowed:

    [HttpPost]
    public async Task<ActionResult<LocalizedString>> Add(ViewModel viewModel)

Why I have to add [HttpPost("{id}")] now to get it works?

[pranavkm]

Can you include the server logs for the 405? Also a minimal repro would help.

[vintzl]

Try with the edit page:

• https://github.com/vintzl/405-Method-Not-Allowed-AND-Custom-PaginatedList

[rynowak]

@vintzl - I spent a few minutes playing with this, and the problem is probably that you don't have CORS set up.

https://docs.microsoft.com/en-us/aspnet/core/blazor/call-web-api?view=aspnetcore-3.0#cross-origin-resource-sharing-cors

--

I don't see anything here that indicates we have a bug

[vintzl]

What about this:

https://github.com/vintzl/405-Method-Not-Allowed-AND-Custom-PaginatedList/blob/master/api-415/Startup.cs#L28

and this:

https://github.com/vintzl/405-Method-Not-Allowed-AND-Custom-PaginatedList/blob/master/api-415/Startup.cs#L40

[rynowak]

@vintzl - I can run your app and I get a 200 - what do I need to do to reproduce the problem? Do you have server-side logs from when you're seeing an 405?

[vintzl]

Strangely, now it works…