validator

class Validator                                  
  include ActiveModel::Validations               
                                                 
  def self.verify(params, rules)                 
    validator = Validator.new params, rules      
    validator.valid?                             
  end                                            
                                                 
  def initialize(params, rules)                  
    rules.each do |key, val|                     
      instance_eval <<-DEFINE_VALIDATORS         
        class << self                            
          attr_accessor :#{key}                  
          validates :#{key}, #{val}              
        end                                      
      DEFINE_VALIDATORS                          
    end                                          
                                                 
    params.each do |key, val|                    
      instance_eval <<-DEFINE_SETTERS            
        class << self                            
          attr_accessor :#{key}                  
        end                                      
      DEFINE_SETTERS                             
    end                                          
                                                 
    @attributes = params                         
    self.attributes = params                     
  end                                            
                                                 
  def attributes=(attributes)                    
    attributes.each do |name, value|             
      send "#{name}=", value                     
    end                                          
  end                                            
end