would you help about const_missing error...

Hello.

I have made a model name is User, so have created "users" table.
and I made Customer class inhrtied by User Class.

When I call the Customer class in some controller, the controller
passed error msg to me.

It seems that controller doesn't find table("users") when make
Customer instance.

previously, thanks for your help.

error message -----------------------------

NameError in MemberController#signup
uninitialized constant MemberController::Customer

RAILS_ROOT: C:/Documents and Settings/Administrator/My Documents/
Aptana Studio/pseudo

c:/ruby/lib/ruby/gems/1.8/gems/activesupport-2.1.1/lib/active_support/
dependencies.rb:493:in `const_missing' app/controllers/
member_controller.rb:9:in `signup'-e:2:in `load'-e:2

here is pieces of controller and model code

----------------------- controller --------------------------------
class MemberController < ApplicationController

  def signup
    if request.post?
      @member = Customer.new(params[:user])
      if @member.save

      end
    end
  end

-------------------------- model ------------------------------------
class User < ActiveRecord::Base

end

class Customer < User
  def initailize
    self.type = 'Customer'
  end
end

class Manager < Employee
  def initailize
    self.type = 'Manager'
  end

Hello.

I have made a model name is User, so have created "users" table.
and I made Customer class inhrtied by User Class.

When I call the Customer class in some controller, the controller
passed error msg to me.

It seems that controller doesn't find table("users") when make
Customer instance.

No, it's not finding your customer class because it's not in
customer.rb.
Either put Customer in customer.rb or require user with
require_dependency

ALso you don't need that initializer to set the type column (rails
will do that for you). It's also not how initialize is spelled.
Fred