module Devise::Models::DatabaseAuthenticatable
Authenticatable
Module, responsible for encrypting password and validating authenticity of a user while signing in.
Options¶ ↑
DatabaseAuthenticable adds the following options to devise_for:
* +pepper+: a random string used to provide a more secure hash. Use `rake secret` to generate new keys. * +stretches+: the cost given to bcrypt.
Examples¶ ↑
User.find(1).valid_password?('password123') # returns true/false
Attributes
Public Class Methods
# File lib/devise/models/database_authenticatable.rb, line 35 def self.required_fields(klass) [:encrypted_password] + klass.authentication_keys end
Public Instance Methods
A callback initiated after successfully authenticating. This can be used to insert your own logic that is only run after the user successfully authenticates.
Example:
def after_database_authentication self.update_attribute(:invite_code, nil) end
# File lib/devise/models/database_authenticatable.rb, line 132 def after_database_authentication end
A reliable way to expose the salt regardless of the implementation.
# File lib/devise/models/database_authenticatable.rb, line 136 def authenticatable_salt encrypted_password[0,29] if encrypted_password end
Set password and password confirmation to nil
# File lib/devise/models/database_authenticatable.rb, line 54 def clean_up_passwords self.password = self.password_confirmation = nil end
Destroy record when :current_password matches, otherwise returns error on :current_password. It also automatically rejects :current_password if it is blank.
# File lib/devise/models/database_authenticatable.rb, line 110 def destroy_with_password(current_password) result = if valid_password?(current_password) destroy else self.valid? self.errors.add(:current_password, current_password.blank? ? :blank : :invalid) false end result end
Generates password encryption based on the given value.
# File lib/devise/models/database_authenticatable.rb, line 40 def password=(new_password) @password = new_password self.encrypted_password = password_digest(@password) if @password.present? end
Update record attributes when :current_password matches, otherwise returns error on :current_password.
This method also rejects the password field if it is blank (allowing users to change relevant information like the e-mail without changing their password). In case the password field is rejected, the confirmation is also rejected as long as it is also blank.
# File lib/devise/models/database_authenticatable.rb, line 65 def update_with_password(params, *options) current_password = params.delete(:current_password) if params[:password].blank? params.delete(:password) params.delete(:password_confirmation) if params[:password_confirmation].blank? end result = if valid_password?(current_password) update_attributes(params, *options) else self.assign_attributes(params, *options) self.valid? self.errors.add(:current_password, current_password.blank? ? :blank : :invalid) false end clean_up_passwords result end
Updates record attributes without asking for the current password. Never allows a change to the current password. If you are using this method, you should probably override this method to protect other attributes you would not like to be updated without a password.
Example:
def update_without_password(params, *options) params.delete(:email) super(params) end
# File lib/devise/models/database_authenticatable.rb, line 98 def update_without_password(params, *options) params.delete(:password) params.delete(:password_confirmation) result = update_attributes(params, *options) clean_up_passwords result end
Verifies whether a password (ie from sign in) is the user password.
# File lib/devise/models/database_authenticatable.rb, line 46 def valid_password?(password) return false if encrypted_password.blank? bcrypt = ::BCrypt::Password.new(encrypted_password) password = ::BCrypt::Engine.hash_secret("#{password}#{self.class.pepper}", bcrypt.salt) Devise.secure_compare(password, encrypted_password) end
Protected Instance Methods
Digests the password using bcrypt. Custom encryption should override this method to apply their own algorithm.
See github.com/plataformatec/devise-encryptable for examples of other encryption engines.
# File lib/devise/models/database_authenticatable.rb, line 147 def password_digest(password) Devise.bcrypt(self.class, password) end