EnumFu
======

Make a integer field of an ActiveRecord as enum typed.
 - faster operation in DB
 - easy coding 



Usage 
======

# db schema
create_table 'users' do |t|
  t.column 'role', :integer, :limit => 2
end

# model
class User < ActiveRecord::Base
  acts_as_enum :role, [:customer, :admin]
end

# usage


# create new record
u = User.new(:role => :customer) 
u.save

# get value
u.role				# :customer
u.role_before_type_case		# 0

# set value
u.role = :user


# get the integer value for an enum value
User.role(:user)		# 1


# list of all enum values  
User::ROLE			# [:customer, :admin]


# in a view
<% form_for :customer, :url => {:action => 'create'} do |f| %>
    <%= f.select :role, Customer::ROLE %>
<% end %>

# in a controller
u = User.new(params[:customer])