¿Cómo hacer Diseñar con cerradura con el número de intentos fallidos

Question

Usando Idear 2.1.2 y 3.2.6 Carriles

que estoy haciendo esto Q & Un solo en caso de que otros encuentran con este problema porque he encontrado poca y dispersa documentación para ello.

Este error puede ocurrir si intenta configurar Devise como bloqueable.

undefined local variable or method `locked_at' for [someClass] 

Significa que su modelo no posee los atributos adecuados.

Requisitos: configurar los siguientes en config/inicializadores/devise.rb

# ==> Configuration for :lockable 
# Defines which strategy will be used to lock an account. 
# :failed_attempts = Locks an account after a number of failed attempts to sign in. 
# :none   = No lock strategy. You should handle locking by yourself. 
config.lock_strategy = :failed_attempts 

# Defines which key will be used when locking and unlocking an account 
config.unlock_keys = [ :email ] 

# Defines which strategy will be used to unlock an account. 
# :email = Sends an unlock link to the user email 
# :time = Re-enables login after a certain amount of time (see :unlock_in below) 
# :both = Enables both strategies 
# :none = No unlock strategy. You should handle unlocking by yourself. 
config.unlock_strategy = :email 

# Number of authentication tries before locking an account if lock_strategy 
# is failed attempts. 
config.maximum_attempts = 20 

# Time interval to unlock the account if :time is enabled as unlock_strategy. 
# config.unlock_in = 1.hour 

Configure su modelo para incluir devise :lockable:

class Example < ActiveRecord::Base 
    # Include default devise modules. Others available are: 
    # :token_authenticatable, :confirmable, 
    # :lockable, :timeoutable and :omniauthable 
    devise :database_authenticatable, :registerable, 
     :recoverable, :rememberable, :trackable, :validatable, :lockable 

Answer 1

Simplemente descomentar esta cadenas en la migración legado:

## Lockable 
    # t.integer :failed_attempts, :default => 0 # Only if lock strategy is :failed_attempts 
    # t.string :unlock_token # Only if unlock strategy is :email or :both 
    # t.datetime :locked_at 

Answer 2

Devise las necesidades de estos tres atributos en su modelo. Por lo tanto, genere la siguiente migración y ejecútela.

class AddLockableToExamples < ActiveRecord::Migration 
    def change 
    add_column :examples, :failed_attempts, :integer, default: 0 
    add_column :examples, :unlock_token, :string # Only if unlock strategy is :email or :both 
    add_column :examples, :locked_at, :datetime 
    end 
end 

Espero que esto le ahorre a alguien más horas de google-fu.