directory_web_service.rb

require 'mechanize'
require 'sinatra'

get '/:psuid' do
  find_name params[:psuid]
end

def find_name(psuid)
  page = Mechanize.new.get('http://psu.edu/ph')
  search_result = page.form_with(:name => 'search') do |search|
    search.uid = psuid
  end.submit

  word = search_result.parser.at('html body form table tr td b').text
  word[21, word.length].split(" ").map do |n|
    n.downcase.capitalize
  end.join(" ")
rescue
  "There was an error trying to fetch ID: '#{psuid}'"
end