Module: Devise::Models::DatabaseAuthenticatable

Extended by:
ActiveSupport::Concern
Defined in:
lib/devise/models/database_authenticatable.rb

Overview

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

Class Method Summary (collapse)

Instance Method Summary (collapse)

Class Method Details

+ (Object) required_fields(klass) 



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# File 'lib/devise/models/database_authenticatable.rb', line 30

def self.required_fields(klass)
  [:encrypted_password] + klass.authentication_keys
end

Instance Method Details

- (Object) after_database_authentication 



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# File 'lib/devise/models/database_authenticatable.rb', line 98

def after_database_authentication
end

- (Object) authenticatable_salt

A reliable way to expose the salt regardless of the implementation.



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# File 'lib/devise/models/database_authenticatable.rb', line 102

def authenticatable_salt
  encrypted_password[0,29] if encrypted_password
end

- (Object) clean_up_passwords

Set password and password confirmation to nil



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# File 'lib/devise/models/database_authenticatable.rb', line 49

def clean_up_passwords
  self.password = self.password_confirmation = nil
end

- (Object) password=(new_password)

Generates password encryption based on the given value.



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# File 'lib/devise/models/database_authenticatable.rb', line 35

def password=(new_password)
  @password = new_password
  self.encrypted_password = password_digest(@password) if @password.present?
end

- (Object) update_with_password(params, *options)

Update record attributes when :current_password matches, otherwise returns error on :current_password. It also automatically rejects :password and :password_confirmation if they are blank.



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# File 'lib/devise/models/database_authenticatable.rb', line 56

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.attributes = params
    self.valid?
    self.errors.add(:current_password, current_password.blank? ? :blank : :invalid)
    false
  end

  clean_up_passwords
  result
end

- (Object) update_without_password(params, *options)

Updates record attributes without asking for the current password. Never allows to change 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={})
  params.delete(:email)
  super(params)
end


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# File 'lib/devise/models/database_authenticatable.rb', line 89

def update_without_password(params, *options)
  params.delete(:password)
  params.delete(:password_confirmation)

  result = update_attributes(params, *options)
  clean_up_passwords
  result
end

- (Boolean) valid_password?(password)

Verifies whether an password (ie from sign in) is the user password.

Returns:

  • (Boolean) 


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# File 'lib/devise/models/database_authenticatable.rb', line 41

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