Using request objects for non-body parameters in Minimal API-CodePudding

Is it possible to have a request class where it is possible to declare the minimal API request parameters in .NET 6? I know that a similar feature will be provided by .NET 7.

What I am trying to achieve is the following:

public class GetProductByIdRequestDto
{
    [FromRoute(Name = "id")] public string Id { get; set; } 
}

app.MapGet("/products/{id}", GetProductByIdRequestDto request => HandleRequest(request));

The problem is that:

If I don't declare any attribute AspNet automatically inferres that it should be from body and this causes an error since it's a GET request
If I use the [FromRoute] in the MapGet delegate AspNet throws an error because there is no route parameter named "request"

I know that

app.MapGet("/products/{id}", [FromRoute(Name = "id")]string productId => HandleRequest(productId));

would work, but this is not what I'm looking for

CodePudding user response：

AFAIK there are no out of the box option for it. You can leverage custom parameter binding via TryParse or BindAsync:

public class GetProductByIdRequestDto
{
    public string Id { get; set; }

    public static ValueTask<GetProductByIdRequestDto?> BindAsync(HttpContext context,
        ParameterInfo parameter)
    {
        const string idKey = "id";

        var result = new GetProductByIdRequestDto
        {
            Id = context.Request.RouteValues[idKey]?.ToString()
        };

        return ValueTask.FromResult<GetProductByIdRequestDto?>(result);
    }
}