Module: Ramaze::Helper::SimpleCaptcha

Includes:
Traited
Defined in:
lib/ramaze/helper/simple_captcha.rb

Overview

Produce very simple question/answer pairs.

The default is a trivial mathematical problem.

Usage (trait is optional):

class RegisterController < Ramaze::Controller
  trait :captcha => lambda{
    ["the answer to everything", "42"]
  }

  def index
    %(
      <form action="#{r(:answer}">
        What is #{simple_captcha}?
        <input type="text" name="answer" />"
        <input type="submit" />
      </form>
    ).strip
  end

  def answer
    check_captcha(request[:answer])
  end
end

Constant Summary collapse

NUMBERS = 
[5, 10, 15, 20]

Instance Method Summary collapse

Instance Method Details

#check_captcha(answer) ⇒ Object

check the given answer against the answer stored in the session.



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# File 'lib/ramaze/helper/simple_captcha.rb', line 54

def check_captcha(answer)
  return false unless captcha = session[:CAPTCHA]

  answer.to_s.strip == captcha[:answer].to_s
end

#simple_captcha ⇒ Object

Call the trait and store question/answer in session



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# File 'lib/ramaze/helper/simple_captcha.rb', line 46

def simple_captcha
  question, answer  = ancestral_trait[:captcha].call
  session[:CAPTCHA] = { :question => question, :answer => answer.to_s }

  question
end