can't get text input to work on my simple Sinatra text numbers game - ruby

Question

I have made a simple game in Ruby to help learn it. Now, I've been trying to implement it in Sinatra, however I cannot get the text input to interact with the 'while' loop. Can anyone help me see what I'm doing wrong?
require 'rubygems'
require 'sinatra'
require 'sinatra/reloader'
require 'haml'
#use Rack::Session::Pool
module HotColdApp
def initialize
guesses = 1
i = rand(10)
end
def play
"Guess a number from 1 to 10"
"You have 5 tries"
"----------"
guess = gets.to_i
while guess != i and guesses < 5
guesses = guesses + 1
if guess < i
"too cold"
guess = gets.to_i
else guess > i
"too hot"
guess = gets.to_i
end
end
if guess == i
"just right"
else
"try again next time"
end
end
end
include HotColdApp
get '/' do
p initialize
haml :index
end
post '/' do
guess = params[:guess]
haml :index, :locals => {:name => guess}
end
__END__
## index
!!!!
%html
%head
%title Hot/Cold
%body
%h1 hOt/cOld
%p
Guess a number from 1 to 10. You have 5 tries.
%form{:action => "/", :method => "POST"}
%p
%input{:type => "textbox", :name => "guess", :class => "text"}
%p
%input{:type => "submit", :value => "GUESS!", :class => "button"}
%p

Answer 1

I'm not sure if this does exactly what you're looking for but it does play the game. Some things to notice: I changed the play method. Using a while loop and gets doesn't really make much sense. Instead I grabbed the parameter and passed to play while keeping count of the guesses. I indented the form because you weren't nesting submit or the text field inside of the form. I recommend you look at the source of your page after you generate with haml. It didn't see that you totally understood what was going on. This should give you more than a few steps to get ahead with.
require 'sinatra'
require 'sinatra/reloader'
require 'haml'
#use Rack::Session::Pool
module HotColdApp
def initialize
#guesses = 5
#i = rand(10)
end
def play(guess)
guess = guess.to_i
if(#i != guess && #guesses > 1)
#guesses -= 1
if guess < #i
return "#{#guesses} left. Too cold"
else guess > #i
return "#{#guesses} left. Too hot"
end
elsif(#i != guess && #guesses == 1)
return "You lose!"
elsif(#i == guess)
return "You win!"
end
end
end
include HotColdApp
get '/' do
p initialize
haml :index
end
post '/' do
guess = params[:guess]
#result = play(guess)
haml :index, :locals => {:name => guess}
end
__END__
## index
!!!!
%html
%head
%title Hot/Cold
%body
%h1 hOt/cOld
%p
Guess a number from 1 to 10. You get 5 tries.
%form{:action => "/", :method => "POST"}
%p
%input{:type => "textbox", :name => "guess", :class => "text"}
%p
%input{:type => "submit", :value => "GUESS!", :class => "button"}
%p
%p= #result