First, I need help about login_generator, I am a programmer of rails applications. I have some examples for this ruby gem.

I share this with us.

1.- First It's necessary to install login_generator gem

sudo gem install login_generator

2.- you need to create a model

./script/generate model user

this command create a file called user.rb that contains this:

#———————–user.rb in a models folder ———————- require 'digest/sha1'

# this model expects a certain database layout and its based on the name/login pattern. class User < ActiveRecord::Base

def self.authenticate(login, pass)
  find_first(["login = ? AND password = ?", login, sha1(pass)])
end

def change_password(pass)
  update_attribute "password", self.class.sha1(pass)
end

protected

def self.sha1(pass)
  Digest::SHA1.hexdigest("change-me--#{pass}--")
end

before_create :crypt_password

def crypt_password
  write_attribute("password", self.class.sha1(password))
end

validates_length_of :login, :within => 3..40
validates_length_of :password, :within => 5..40
validates_presence_of :login, :password, :password_confirmation
validates_uniqueness_of :login, :on => :create
validates_confirmation_of :password, :on => :create

end

3.- then, rails by default create a migration file that should have the follow:

class CreateUsers < ActiveRecord::Migration

def self.up
create_table :users do |t|
t.column :login, :string, :default => nil
t.column :password, :string, :default => nil
end

  User.create(:login => 'administrador',
:password => 'password',
:password_confirmation => 'password')

end

def self.down
drop_table :users
end

end

4.- It's necesarry have a file login_system.rb in a lib folder of your rails project, the most easy way to apply login_generator system it's to eject the command

./script/generate login_generator <name of controller>

5.- comments with Carlos Augusto Monterrosa Lopez

  http://cmonterrosatechnotes.blogspot.com