[Question]: FormData parameters with file uploads

[RickyNHSPS]

What are you wanting to achieve?

I am trying to get the generated openapi json to generate my parameters decorated as [FromForm] correctly. Currently, it generates as a single object parameter as opposed to multiple parameters that can be provided.

using version 8.1.4 or greater, I get the following

.

As opposed to the below using an older version (eg. v6.6.2)

There was this discussion before that identified that using WithOpenApi would make it behave as I desire it to, but it doesn't work anymore, it appears that the WithOpenApi behaviour has been changed just to make it consistent. dotnet/aspnetcore#52284

Is there any way to get the previous behavior, so that I can accommodate request data and files in a single fromform described parameter.

What code or approach do you have so far?

group.MapPost("/send-email", async (
[FromServices] ISender sender, HttpContext ctx, [FromForm] PublishSendEmailRequest request) =>
{
var response = await sender.Send(request);
return Results.Ok(response);
})
.WithName("SendEmail")
.WithDescription("Sends an email")
.Accepts("multipart/form-data")
.WithOpenApi();

Additional context

No response

[yadisnel]

same here

[RickyNHSPS]

I managed a workaround with this operation filter, not sure if there are better ways though or if this is not suggested

public class FormOperationFilter : IOperationFilter
{
    public void Apply(OpenApiOperation operation, OperationFilterContext context)
    {
        if (operation.RequestBody == null)
            return;
 
        if (!operation.RequestBody.Content.TryGetValue("multipart/form-data", out var mediaType))
            return;
 
        if (mediaType.Schema.Properties?.TryGetValue("request", out var wrapper) is true)
        {
            mediaType.Schema = wrapper;
        }
    }
}

Then just the swaggergen wireup

services.AddSwaggerGen(options =>
{
    ...
    options.OperationFilter<FormOperationFilter>();
});

[github-actions]

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