Module: Devise::Models::Lockable

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

Overview

Handles blocking a user access after a certain number of attempts. Lockable accepts two different strategies to unlock a user after it’s blocked: email and time. The former will send an email to the user when the lock happens, containing a link to unlock its account. The second will unlock the user automatically after some configured time (ie 2.hours). It’s also possible to setup lockable to use both email and time strategies.

Options

Lockable adds the following options to devise:

* +maximum_attempts+: how many attempts should be accepted before blocking the user.
* +lock_strategy+: lock the user account by :failed_attempts or :none.
* +unlock_strategy+: unlock the user account by :time, :email, :both or :none.
* +unlock_in+: the time you want to lock the user after to lock happens. Only available when unlock_strategy is :time or :both.
* +unlock_keys+: the keys you want to use when locking and unlocking an account

Defined Under Namespace

Modules: ClassMethods

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.required_fields(klass) ⇒ Object 



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# File 'lib/devise/models/lockable.rb', line 27

def self.required_fields(klass)
  attributes = []
  attributes << :failed_attempts if klass.lock_strategy_enabled?(:failed_attempts)
  attributes << :locked_at if klass.unlock_strategy_enabled?(:time)
  attributes << :unlock_token if klass.unlock_strategy_enabled?(:email)

  attributes
end

Instance Method Details

#access_locked? ⇒ Boolean

Verifies whether a user is locked or not.

Returns:

  • (Boolean) 


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# File 'lib/devise/models/lockable.rb', line 57

def access_locked?
  locked_at && !lock_expired?
end

#active_for_authentication? ⇒ Boolean

Overwrites active_for_authentication? from Devise::Models::Activatable for locking purposes by verifying whether a user is active to sign in or not based on locked?

Returns:

  • (Boolean) 


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# File 'lib/devise/models/lockable.rb', line 73

def active_for_authentication?
  super && !access_locked?
end

#inactive_message ⇒ Object

Overwrites invalid_message from Devise::Models::Authenticatable to define the correct reason for blocking the sign in.



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# File 'lib/devise/models/lockable.rb', line 79

def inactive_message
  access_locked? ? :locked : super
end

#lock_access! ⇒ Object

Lock a user setting its locked_at to actual time.



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# File 'lib/devise/models/lockable.rb', line 37

def lock_access!
  self.locked_at = Time.now.utc

  if unlock_strategy_enabled?(:email)
    generate_unlock_token!
    send_unlock_instructions
  else
    save(:validate => false)
  end
end

#resend_unlock_token ⇒ Object

Resend the unlock instructions if the user is locked.



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# File 'lib/devise/models/lockable.rb', line 67

def resend_unlock_token
  if_access_locked { send_unlock_instructions }
end

#send_unlock_instructions ⇒ Object

Send unlock instructions by email



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# File 'lib/devise/models/lockable.rb', line 62

def send_unlock_instructions
  send_devise_notification(:unlock_instructions)
end

#unauthenticated_message ⇒ Object 



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# File 'lib/devise/models/lockable.rb', line 107

def unauthenticated_message
  # If set to paranoid mode, do not show the locked message because it
  # leaks the existence of an account.
  if Devise.paranoid
    super
  elsif lock_strategy_enabled?(:failed_attempts) && attempts_exceeded?
    :locked
  else
    super
  end
end

#unlock_access! ⇒ Object

Unlock a user by cleaning locked_at and failed_attempts.



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

def unlock_access!
  self.locked_at = nil
  self.failed_attempts = 0 if respond_to?(:failed_attempts=)
  self.unlock_token = nil  if respond_to?(:unlock_token=)
  save(:validate => false)
end

#valid_for_authentication? ⇒ Boolean

Overwrites valid_for_authentication? from Devise::Models::Authenticatable for verifying whether a user is allowed to sign in or not. If the user is locked, it should never be allowed.

Returns:

  • (Boolean) 


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# File 'lib/devise/models/lockable.rb', line 86

def valid_for_authentication?
  return super unless persisted? && lock_strategy_enabled?(:failed_attempts)

  # Unlock the user if the lock is expired, no matter
  # if the user can login or not (wrong password, etc)
  unlock_access! if lock_expired?

  if super && !access_locked?
    true
  else
    self.failed_attempts ||= 0
    self.failed_attempts += 1
    if attempts_exceeded?
      lock_access! unless access_locked?
    else
      save(:validate => false)
    end
    false
  end
end