Simon Moro said about 4 years ago on Bulk Upload with Active Storage :
Thanks for this, Dave!

This is SO much cleaner than the hack I tried to do that looked like this... Plus I also had other logic around project count track limits... I appreciate the tutorial :)

if files.length > 0
    files.each do |f|
      @project.tracks.create(mp3_file: ActiveStorage::Blob.find_signed(f), file_size_limit: file_size_limit)
    end
end