## routes.rb
ActionController::Routing::Routes.draw do |map|
  map.resources :countries, :collection => {:auto_complete_for_country_name => :get}
  map.resources :users, :collection => {:auto_complete_for_user_login => :get}
  ...

## country.rb
class Country < ActiveRecord::Base
end


## countries_controller.rb
class CountriesController < ApplicationController
  auto_complete_for :country, :name
  def index
    @countries = Country.find(:all)
  end
end


## index.html.erb - countries
<div class="content">
  <% for c in @countries %>
    <p><%= c.name %></p>
  <% end %>

  <p><%= text_field_with_auto_complete :country, :name, {}, {:method => :get} %></p>
</div>


## user.rb
require 'digest/sha1'
class User < ActiveRecord::Base
	has_many :images

 # Virtual attribute for the unencrypted password
  attr_accessor :password

  validates_presence_of     :login, :email, :email_confirmation
#                            :gender, :birthdate, :country, :hair,
#                            :eye_color, :height, :weight, :body_type,
#                            :fitness, :ethnicity, :faith, :level_of_faith,
#                            :education, :occupation, :smoking, :drinking,
#                            :relationship_status, :family, :pets,
#                            :headline, :description
#

  validates_presence_of     :password,                   :if => :password_required?
  validates_presence_of     :password_confirmation,      :if => :password_required?

  validates_confirmation_of :password,                   :if => :password_required?
  validates_confirmation_of :email

  validates_length_of       :password, :within => 8..40, :if => :password_required?
  validates_length_of       :login,    :within => 5..40
  validates_length_of       :email,    :within => 6..100

  #validates_uniqueness_of   :login, :email, :case_sensitive => false

  before_save :encrypt_password
  before_create :make_activation_code

  # prevents a user from submitting a crafted form that bypasses activation
  # anything else you want your user to change should be added here.
  attr_accessible :login, :password,
    :password_confirmation, :email,
    :email_confirmation,  :gender_id,
		:attitude_id, :birthdate,

		:country_id, :hair_type_id,
    :eye_color_id, :height_id, :weight_id,
    :body_type_id, :education_id,
    :occupation_id, :smoking_id, :drinking_id,
    :relationship_status_id, :headline, :description

  # Activates the user in the database.
  def activate
    @activated = true
    self.activated_at = Time.now.utc
    self.activation_code = nil
    save(false)
  end

  def active?
    # the existence of an activation code means they have not activated yet
    activation_code.nil?
  end

  # Authenticates a user by their login name and unencrypted password.  Returns the user or nil.
  def self.authenticate(login, password)
    u = find :first, :conditions => ['login = ? and activated_at IS NOT NULL', login] # need to get the salt
    u && u.authenticated?(password) ? u : nil
  end

  # Encrypts some data with the salt.
  def self.encrypt(password, salt)
    Digest::SHA1.hexdigest("--#{salt}--#{password}--")
  end

  # Encrypts the password with the user salt
  def encrypt(password)
    self.class.encrypt(password, salt)
  end

  def authenticated?(password)
    crypted_password == encrypt(password)
  end

  def remember_token?
    remember_token_expires_at && Time.now.utc < remember_token_expires_at
  end

  # These create and unset the fields required for remembering users between browser closes
  def remember_me
    remember_me_for 2.weeks
  end

  def remember_me_for(time)
    remember_me_until time.from_now.utc
  end

  def remember_me_until(time)
    self.remember_token_expires_at = time
    self.remember_token            = encrypt("#{email}--#{remember_token_expires_at}")
    save(false)
  end

  def forget_me
    self.remember_token_expires_at = nil
    self.remember_token            = nil
    save(false)
  end

  # Returns true if the user has just been activated.
  def recently_activated?
    @activated
  end

  protected
    # before filter
    def encrypt_password
      return if password.blank?
      self.salt = Digest::SHA1.hexdigest("--#{Time.now.to_s}--#{login}--") if new_record?
      self.crypted_password = encrypt(password)
    end

    def password_required?
      crypted_password.blank? || !password.blank?
    end

    def make_activation_code

      self.activation_code = Digest::SHA1.hexdigest( Time.now.to_s.split(//).sort_by {rand}.join )
    end
end


##users_controller.rb
class UsersController < ApplicationController

auto_complete_for :user, :login

  #  before_filter :login_required
  def index
    @users = User.find(:all)
  end

  def new
    @user = User.new
  end

  def create
    cookies.delete :auth_token
    # protects against session fixation attacks, wreaks havoc with
    # request forgery protection.
    # uncomment at your own risk
    # reset_session
    @user = User.new(params[:user])
    @user.save
    if @user.errors.empty?
      self.current_user = @user
      redirect_back_or_default('/')
      flash[:notice] = "Thanks for signing up!"
    else
      render :action => 'new'
    end
  end

  def activate
    self.current_user = params[:activation_code].blank? ? false : User.find_by_activation_code(params[:activation_code])
    if logged_in? && !current_user.active?
      current_user.activate
      flash[:notice] = "Signup complete!"
    end
    redirect_back_or_default('/')
  end
end


## new.html.erb - users
<div class="content">
        <h2>Regisztráció</h2>

	<%= error_messages_for :user %>

	<% form_for(@user, :html => {:multipart => true}) do |f| -%>
	<h3>Személyes adataim</h3>
	<p><%= f.label :login, 'Login név' %><br/>
	<%= f.text_field :login %></p>

	<p><%= f.label :password, 'Jelszó' %><br/>
	<%= f.password_field :password %></p>

	<p><%= f.label :password_confirmation, 'Jelszó megerősítése' %><br/>
	<%= f.password_field :password_confirmation %></p>

	<p><%= f.label :email, 'E-mail cím' %><br/>
	<%= f.text_field :email %></p>

	<p><%= f.label :email_confirmation, 'E-mail cím megerősítése' %><br/>
	<%= f.text_field :email_confirmation %></p>

	<h3>Jellemzőim</h3>
	<p><%= f.label :gender_id, 'Nem' %><br/>
	<%= collection_select(:user,:gender_id, Gender.find(:all), :id, :name) %></p>

	<p><%= f.label :attitude_id, 'Beállítottság' %><br/>
	<%= collection_select(:user, :attitude_id, Attitude.find(:all), :id, :name) %></p>

	<p><%= f.label :birthdate, 'Születési dátum' %><br/>
	<%= f.date_select :birthdate, :start_year => 1900, :end_year => Time.now.year %></p>



#######################################################
        <p><%= text_field_with_auto_complete :user, :login, {}, {:method => :get} %></p>
#######################################################


	<p><%= f.label :hair_type_id, 'Hajszín' %><br/>
	<%= collection_select(:user,:hair_type_id, HairType.find(:all), :id, :name) %></p>

	<p><%= f.label :eye_color_id, 'Szemszín' %><br/>
	<%= collection_select(:user,:eye_color_id, EyeColor.find(:all), :id, :name) %></p>

	<p><%= f.label :height_id, 'Magasság' %><br/>
	<%= collection_select(:user,:height_id, Height.find(:all), :id, :name) %></p>

	<p><%= f.label :weight_id, 'Súly' %><br/>
	<%= collection_select(:user,:weight_id, Weight.find(:all), :id, :name) %></p>

	<p><%= f.label :body_type_id, 'Testalkat' %><br/>
	<%= collection_select(:user,:body_type_id, BodyType.find(:all), :id, :name) %></p>

	<p><%= f.label :education_id, 'Végzettség' %><br/>
	<%= collection_select(:user,:education_id, Education.find(:all), :id, :name) %></p>

	<p><%= f.label :occupation_id, 'Foglalkozás' %><br/>
	<%= collection_select(:user,:occupation_id, Occupation.find(:all), :id, :name) %></p>

	<p><%= f.label :smoking_id, 'Dohányzás' %><br/>
	<%= collection_select(:user,:smoking_id, Smoking.find(:all), :id, :name) %></p>

	<p><%= f.label :drinking_id, 'Alkoholfogyasztás' %><br/>
	<%= collection_select(:user,:drinking_id, Drinking.find(:all), :id, :name) %></p>

	<p><%= f.label :relationship_status_id, 'Családi állapot' %><br/>
	<%= collection_select(:user,:relationship_status_id, RelationshipStatus.find(:all), :id, :name) %></p>

	<h3>Rólam</h3>
	<p><%= f.label :headline %><br/>
	<%= f.text_field :headline %></p>

	<p><%= f.label :description %><br/>
	<%= f.text_area :description %></p>

	<p><%= submit_tag 'Regisztráció' %></p>
<% end -%>
</div>