params.files does not support multiple file uploads in a single field

[sdogruyol]

When uploading multiple files in a single field (e.g., images[]), params.files currently only captures the last file, overwriting any previous files in the array. This behavior limits support for multi-file uploads, as only a single Kemal::FileUpload object is returned instead of an array of uploaded files.

Expected Behavior

The params.files method should recognize and return all files in the field as an array of Kemal::FileUpload objects, allowing for multiple file uploads in one request.

Potential Solutions

• New Method: Introduce a new method, such as params.all_files, specifically for handling multiple file uploads and returning an array of Kemal::FileUpload objects. This approach avoids breaking existing functionality.
• Breaking Change: Modify params.files directly to support an array of Kemal::FileUpload objects, introducing a breaking change but aligning the method with multi-file upload expectations.

Impact

Updating this behavior will enhance file handling capabilities in Kemal and align it more closely with common file upload workflows, especially useful for forms that allow multiple file selections.

WDYT @straight-shoota