Fileupload to s3

to_s3_son.rb

post "/" do
	logger.debug "Params - " + params.to_s

	photo = nil

	caption = params[:caption]

	params.each_value do |file|

		unless file && file.is_a?(Hash) && (tmpfile = file[:tempfile]) && (name = file[:filename])
			logger.debug "Cannot upload"
		else

			logger.debug "Can upload"

			s3_file_name = SecureRandom.urlsafe_base64.to_s

			while blk = tmpfile.read(65536)
				AWS::S3::Base.establish_connection!(
				:access_key_id     => ENV['S3_KEY'],
				:secret_access_key => ENV['S3_SECRET'])
				AWS::S3::S3Object.store(s3_file_name, open(tmpfile),ENV['S3_BUCKET'],:access => :public_read,:content_type => 'image/png')     
			end

			o =  [('a'..'z'),('A'..'Z')].map{|i| i.to_a}.flatten
			url_code  =  (0...12).map{ o[rand(o.length)] }.join

			photo = Photo.create(:url => "https://s3.amazonaws.com/#{ENV['S3_BUCKET']}/#{s3_file_name}", :caption => caption, :url_code => url_code, :created_on => Time.now, :updated_on => Time.now)

		end

	end

	if photo
		return 200, {}, photo.json.to_json
	else
		return 400, {}, {}
	end

end