rails console

1.9.2p290 :002 > user = User.find_by_email("t@test.com")
  User Load (0.4ms)  SELECT "users".* FROM "users" WHERE "users"."email" = 't@test.com' LIMIT 1
 => #<User id: 101, email: "t@test.com", first_name: "t", last_name: "t", mother_first_name: "t", mother_last_name: "t", mother_email: nil, mother_work_phone: nil, mother_home_phone: "t", father_first_name: "t", father_last_name: "t", father_email: "t", father_work_phone: "t", father_home_phone: nil, address: "t", city: "t", postal_code: "t", username: nil, campus: nil, remember_token: "y_In_Q-ZX43Mg45R8x-VGA", password_digest: "$2a$10$zooQ6ZXJ12L36DI2vIFobe9wfviwEOwmfj9R9T1cg8wx...", teacher: false, admin: false, created_at: "2012-03-25 04:10:37", updated_at: "2012-03-25 04:10:37"> 
1.9.2p290 :003 > user
 => #<User id: 101, email: "t@test.com", first_name: "t", last_name: "t", mother_first_name: "t", mother_last_name: "t", mother_email: nil, mother_work_phone: nil, mother_home_phone: "t", father_first_name: "t", father_last_name: "t", father_email: "t", father_work_phone: "t", father_home_phone: nil, address: "t", city: "t", postal_code: "t", username: nil, campus: nil, remember_token: "y_In_Q-ZX43Mg45R8x-VGA", password_digest: "$2a$10$zooQ6ZXJ12L36DI2vIFobe9wfviwEOwmfj9R9T1cg8wx...", teacher: false, admin: false, created_at: "2012-03-25 04:10:37", updated_at: "2012-03-25 04:10:37"> 
1.9.2p290 :004 > user.admin = true
 => true 
1.9.2p290 :005 > user
 => #<User id: 101, email: "t@test.com", first_name: "t", last_name: "t", mother_first_name: "t", mother_last_name: "t", mother_email: nil, mother_work_phone: nil, mother_home_phone: "t", father_first_name: "t", father_last_name: "t", father_email: "t", father_work_phone: "t", father_home_phone: nil, address: "t", city: "t", postal_code: "t", username: nil, campus: nil, remember_token: "y_In_Q-ZX43Mg45R8x-VGA", password_digest: "$2a$10$zooQ6ZXJ12L36DI2vIFobe9wfviwEOwmfj9R9T1cg8wx...", teacher: false, admin: true, created_at: "2012-03-25 04:10:37", updated_at: "2012-03-25 04:10:37"> 
1.9.2p290 :006 > user.save
   (0.1ms)  begin transaction
  User Exists (0.3ms)  SELECT 1 FROM "users" WHERE (LOWER("users"."email") = LOWER('t@test.com') AND "users"."id" != 101) LIMIT 1
   (0.1ms)  rollback transaction
 => false 
1.9.2p290 :007 > User.find_by_email("t@test.com")
  User Load (0.5ms)  SELECT "users".* FROM "users" WHERE "users"."email" = 't@test.com' LIMIT 1
 => #<User id: 101, email: "t@test.com", first_name: "t", last_name: "t", mother_first_name: "t", mother_last_name: "t", mother_email: nil, mother_work_phone: nil, mother_home_phone: "t", father_first_name: "t", father_last_name: "t", father_email: "t", father_work_phone: "t", father_home_phone: nil, address: "t", city: "t", postal_code: "t", username: nil, campus: nil, remember_token: "y_In_Q-ZX43Mg45R8x-VGA", password_digest: "$2a$10$zooQ6ZXJ12L36DI2vIFobe9wfviwEOwmfj9R9T1cg8wx...", teacher: false, admin: false, created_at: "2012-03-25 04:10:37", updated_at: "2012-03-25 04:10:37"> 

user.rb

class User < ActiveRecord::Base
  attr_accessible :first_name,
                  :last_name,
                  :email,
                  :mother_first_name,
                  :mother_last_name,
                  :mother_work_phone,
                  :mother_home_phone,
                  :father_first_name,
                  :father_last_name,
                  :father_email,
                  :father_work_phone,
                  :address,
                  :city,
                  :postal_code,
                  :username,
                  :password, 
                  :password_confirmation
                  
  has_secure_password
  has_many :children
  before_save :create_remember_token
  
  validates :first_name, presence: true, length: { maximum: 50 }
  validates :last_name, presence: true, length: { maximum: 50 }
  valid_email_regex = /\A[\w+\-.]+@[a-z\d\-.]+\.[a-z]+\z/i
  validates :email, presence: true, format: { with: valid_email_regex }, uniqueness: { case_sensitive: false }
  validates :password, length: { minimum: 6 }
  
  private

    def create_remember_token
      self.remember_token = SecureRandom.urlsafe_base64
    end
end