shrine_multipart_upload_params.rb

{
  galleryID: "some_gallery_id",
  images: [
    #<ActionDispatch::Http::UploadedFile:0x000055fb90c6dbd0 @tempfile=#<Tempfile:/tmp/RackMultipart20180131-31-6zkb3i.txt>, @original_filename="b.txt", @content_type="text/plain", @headers="Content-Disposition: form-data; name=\"0\"; filename=\"b.txt\"\r\nContent-Type: text/plain\r\n">,
    #<ActionDispatch::Http::UploadedFile:0x000055fb90c6da18 @tempfile=#<Tempfile:/tmp/RackMultipart20180131-31-13i0pio.txt>, @original_filename="c.txt", @content_type="text/plain", @headers="Content-Disposition: form-data; name=\"1\"; filename=\"c.txt\"\r\nContent-Type: text/plain\r\n">
  ]
}