several attempts at looping through files

gistfile1.txt

  def addSubmissions(submission_data,media_files)
    submission_post_url = URI.join(@url,"submission")
    #params = { :xml_submission_file => File.open(submission_data), :datafile => media_files.select { |f| File.file?(f) }.map { |f|  File.open(f) }}
    #params = {:xml_submission_file => File.open(submission_data)}
    mediafiles = []
    x = Hash.new{|hsh,key| hsh[key] = [] }
    #media_files.each { |file| mediafiles[:datafile] = File.open(file) }
    media_files.each do|file|
      #x['datafile'].push File.open(file)
      #mediafiles.push(File.open(file))
    end
    x['xml_submission_file'].push File.open(submission_data)
    #mediafiles.each_with_index {|v, i| x[:datafile] = v}
    #myparams = media_files.select { |f| File.file?(f) }.map { :datafile => File.open(f) }
    #params = { :xml_submission_file => File.open(submission_data),  media_files.select { |f| File.file?(f) }.map { |f|  :datafile => File.open(f) }}
    #params = { :xml_submission_file => File.open(submission_data), :datafile => mediafiles}
    #mediafiles.push(:xml_submission_file => File.open(submission_data))
    #params = x
    #http = HTTPClient.new
    #httpresults = http.post(submission_post_url,params)
    #puts httpresults.content
    puts x
  end
end