# post_hello.rb
require 'rubygems'
require 'sinatra'
 
before do
  @hi_msg = "HAI!"
  request.path_info = '/'
end
 
get '/' do
  <<-form
  <h1>Name to say hi!</h1>
  <form method="post">
    <input type="text" name="name">
    <input type="submit" value="send">
  </form>
  form
end
 
post '/' do
  "#{@hi_msg} #{params[:name]}"
end