Upload file form with Pony in Sinatra

Question

I'm trying to get an upload form working in Sinatra using Pony. Right now everything works fine, the file's getting read, the emails gets mailed successfully, I just can't seem to get the attachment to attach. I don't think I'm calling the file's path correctly? I'm not entirely sure, new to the whole Ruby/Sinatra/Pony scene. Any help? MUCH appreciated!

Here's what I have right now:

 post '/upload' do
    unless params[:file] &&
           (tmpfile = params[:file][:tempfile]) &&
           (name = params[:file][:filename])
      @error = "No file selected"
      return :success
    end
    STDERR.puts "Uploading file, original name #{name.inspect}"
    while blk = tmpfile.read(65536)
      # here you would write it to its final location
      STDERR.puts blk.inspect
    end

    logger.info "some"
    Pony.mail(
        :from => params[:uname] + "<" + params[:email] + ">",
        :to => 'example@example.com',
        :subject => "Internship Prospect " + params[:uname] + " has contacted you",
        :body => "Hello,\n\nYou have a new contact request\n\nName: "+params[:uname]+"\nEmail: "+params[:email]+"\n\nMessage:\n"+params[:message]+"\n\nThanks,\The Team",
        :port => '587',
        :via => :smtp,
        :via_options => { 
          :address              => 'smtp.gmail.com', 
          :port                 => '587', 
          :enable_starttls_auto => true, 
          :user_name            => 'name@example.com', 
          :password             => 'password', 
          :authentication       => :plain, 
          :domain               => 'localhost.localdomain',
          :attachments => {params[:file][:filename] => File.read(params[:file][:tempfile])}

        })

  redirect "/success"
  end

Answer 1

The :attachments key should be part of the first hash:

Pony.mail(
        :from => params[:uname] + "<" + params[:email] + ">",
        :to => 'example@example.com',
        :subject => "Internship Prospect " + params[:uname] + " has contacted you",
        :body => "Hello,\n\nYou have a new contact request\n\nName: "+params[:uname]+"\nEmail: "+params[:email]+"\n\nMessage:\n"+params[:message]+"\n\nThanks,\The Team",
        :attachments => {params[:file][:filename] => File.read(params[:file][:tempfile])}
        :port => '587',
        :via => :smtp,
        :via_options => { 
          :address              => 'smtp.gmail.com', 
          :port                 => '587', 
          :enable_starttls_auto => true, 
          :user_name            => 'name@example.com', 
          :password             => 'password', 
          :authentication       => :plain, 
          :domain               => 'localhost.localdomain',
        })