module ActiveModel module SecurePassword extend ActiveSupport::Concern module ClassMethods # Adds methods to set and authenticate against a BCrypt password. # This mechanism requires you to have a password_digest attribute. # # Validations for presence of password on create, confirmation of password (using # a "password_confirmation" attribute) are automatically added. # If you wish to turn off validations, pass 'validations: false' as an argument. # You can add more validations by hand if need be. # # You need to add bcrypt-ruby (~> 3.0.0) to Gemfile to use has_secure_password: # # gem 'bcrypt-ruby', '~> 3.0.0' # # Example using Active Record (which automatically includes ActiveModel::SecurePassword): # # # Schema: User(name:string, password_digest:string) # class User < ActiveRecord::Base # has_secure_password # end # # user = User.new(:name => "david", :password => "", :password_confirmation => "nomatch") # user.save # => false, password required # user.password = "mUc3m00RsqyRe" # user.save # => false, confirmation doesn't match # user.password_confirmation = "mUc3m00RsqyRe" # user.save # => true # user.authenticate("notright") # => false # user.authenticate("mUc3m00RsqyRe") # => user # User.find_by_name("david").try(:authenticate, "notright") # => false # User.find_by_name("david").try(:authenticate, "mUc3m00RsqyRe") # => user def has_secure_password(options = {}) # Load bcrypt-ruby only when has_secure_password is used. # This is to avoid ActiveModel (and by extension the entire framework) being dependent on a binary library. gem 'bcrypt-ruby', '~> 3.0.0' require 'bcrypt' attr_reader :password if options.fetch(:validations, true) validates_confirmation_of :password validates_presence_of :password, :on => :create end before_create { raise "Password digest missing on new record" if password_digest.blank? } include InstanceMethodsOnActivation if respond_to?(:attributes_protected_by_default) def self.attributes_protected_by_default super + ['password_digest'] end end end end module InstanceMethodsOnActivation # Returns self if the password is correct, otherwise false. def authenticate(unencrypted_password) BCrypt::Password.new(password_digest) == unencrypted_password && self end # Encrypts the password into the password_digest attribute, only if the # new password is not blank. def password=(unencrypted_password) unless unencrypted_password.blank? @password = unencrypted_password self.password_digest = BCrypt::Password.create(unencrypted_password) end end end end end