For the purpose of a new web app, I would need on my sign up page (which is administrator only) just only one email field.

The thing is that I'm totally new at rails and so even basics things like that are for me really difficult...

I created my authentification using Railscast #270 which uses has_secure_password method. For now, everything works great except that I dont need all this bullcrap... I also want to use Action Mailer to send the generated password to his email adress. A hex(8) password would be perfect (I have seen SecureRandom but it seems to be depreciated)

Users_Controller:

class UsersController < ApplicationController
  skip_before_filter :is_connected?, :only => [:new, :create]

  def new
    @user = User.new
  end

  def create
    @user = User.new(params[:user])
    if @user.save
      # Tell the Mailer to send a welcome Email after save
      Mailer.confirm_email(@user).deliver

      redirect_to root_url, :notice => "Signed up!"
    else
      render "new"
    end
  end
end

User_model:

class User < ActiveRecord::Base
  attr_accessible :email
  has_secure_password
  validates_presence_of :password, :email, :on => :create
end

For now, in my view, I have 2 fields. But as I said earlier, I only want one. I would like to keep using has_secure_password which seems to offer a pretty good security regarding hash/salt.