Excerpt from nginx config file for using nginx_upload_module with Rails

nginx_upload.conf

location = /videos/ {
  upload_pass_form_field "^video";
  upload_store /path/to/your/app/tmp/upload;
  upload_pass @large_upload;
  upload_pass_args on;
  upload_store_access all:rw;
  upload_set_form_field "$upload_field_name[name]" "$upload_file_name";
  upload_set_form_field "$upload_field_name[content_type]" "$upload_content_type";
  upload_set_form_field "$upload_field_name[path]" "$upload_tmp_path";
  upload_aggregate_form_field "$upload_field_name[md5]" "$upload_file_md5";
  upload_aggregate_form_field "$upload_field_name[size]" "$upload_file_size";
  upload_cleanup 400 403 404 499 500-505;
  error_page 404 @large_upload;
}

location @large_upload {
  passenger_enabled on;
}