Issue: Submitting an object with an ICollection to a service results in 415 error (Only with WebAssembly) about stl.fusion

[alexyakunin]

Hi, it works exactly as you "prescribe" in RestEase client interface plus controller. Here is how you switch one of parameters to body payload:

Besides that, ICollection<T> should work as [ComputeMethod] parameter by default, but I am not sure if ASP.NET Core will bind such a parameter properly.

I highly recommend you to switch to simply an array or List<T> there - IMO using an interface like IEnumerable<T> is actually a bad practice. The reason is: every user of such a type expects a precise behavior of such a collection - i.e. no lazy loading on enumeration, etc., but when you specify a generic interface there, you sort of imply that API is open for such implementations. Even though in reality it doesn't - and this is true in almost any place like this.

In short, avoid using IEnumerable<T> and other similar interfaces in POCO & model objects. Just use exact types.

[alexyakunin]

@devedse hopefully this helps :)

[devedse]

Hey @alexyakunin , I added [Body] to the clients and this solved my problem. Thanks for the tips around the IEnumerable for now I just want to make things work as easy as possible but I'll look into this later.

It seems the [FromBody] isn't required in the controller. I suppose post methods automatically accept this.

[alexyakunin]

On [FromBody] - maybe it works this way for some param types - I'd rather be explicit about that though...

Anyway, great it's resolved 👍