Rack::Honeypot

rack_honeypot.rb

# Returns a blank 200 OK response for any form posts that include a value for the honeypot field

module Rack
  class Honeypot

    def initialize(app, field_name)
      @app = app
      @field_name = field_name
    end

    def call(env)
      form_hash = env["rack.request.form_hash"]

      if form_hash && form_hash[@field_name] =~ /\S/
        [200, {'Content-Type' => 'text/html', "Content-Length" => "0"}, []]
      else
        @app.call(env)
      end
    end
    
  end
end