如何使Devise可以锁定失败次数

Question

使用Devise 2.1.2和Rails 3.2.6

我正在做这个问答,以防万一其他人遇到这个问题,因为我发现它很少和分散的文档.

如果您尝试设置Devise为可锁定,则可能会发生此错误.

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

这意味着您的模型没有适当的属性.

先决条件:在config/initializers/devise.rb中设置以下内容

# ==> 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

设置您的模型包括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

Devise在您的模型上需要这三个属性.因此,生成以下迁移并运行它.

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

希望这可以节省别人的谷歌时间.

Answer 2

只需在设计迁移中取消注释这些字符串:

  ## 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