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Michael Hartl撰写的“Rails教程”第7章中的ArgumentError

[英]ArgumentError in Chapter 7 of “Rails Tutorial” by Michael Hartl

大家。 我有以下问题:实现has_password后? 在7.2.3节中,RSpec为“应该创建一个给定有效属性的新实例”测试显示以下错误

1)用户应该在给定有效属性的情况下创建一个新实例失败/错误:User.create!(@ attr)ArgumentError:错误的参数数量(1表示0)#。/ app / model / user.rb:42:in secure_hash' # ./app/models/user.rb:39:in user.rb: secure_hash' # ./app/models/user.rb:39:in make_salt'#。/ app / encrypt_password' # ./spec/models/user_spec.rb:14:in secure_hash' # ./app/models/user.rb:39:in 30: secure_hash' # ./app/models/user.rb:39:in密码'#。/ spec / encrypt_password' # ./spec/models/user_spec.rb:14:in user_spec.rb: encrypt_password' # ./spec/models/user_spec.rb:14:in block(2级)'在'

完成1.47秒1例,1次失败< - 奴隶(1)完成运行!

我不明白,究竟是什么导致了这个问题。 这是我的user.rb代码:

    require 'digest'

class User < ActiveRecord::Base 
  attr_accessor :password
  attr_accessible :name, :email, :password, :password_confirmation

  email_regex = /\A[\w+\-.]+@[a-z\d\-.]+\.[a-z]+\z/i

  validates :name,  :presence => true,
                    :length   => { :maximum => 50 }
  validates :email, :presence => true,
                     :format   => { :with => email_regex },
                     :uniqueness => { :case_sensitive => false }

  # Automatically create the virtual attribute "password_confirmation"
  validates :password, :presence => true,
                    :confirmation => true,
                    :length => { :within => 6..40 } 

  before_save :encrypt_password

  # Return 'true' if the user's password matches the submitted password
  def has_password?(submitted_password)
    encrypted_password == encrypt(submitted_password)
  end

  private

  def encrypt_password
    self.salt = make_salt if new_record?
    self.encrypted_password = encrypt(password)
  end

  def encrypt(string)
    secure_hash("#{salt}--#{string}")
  end

  def make_salt
    secure_hash("#{Time.now.utc}--#{password}")
  end

  def secure_hash
    Digest::SHA2.hexdigest(string)
  end
end

它能是什么? 先感谢您!

你的secure_hash方法需要参数。

def secure_hash(string)
  Digest::SHA2.hexdigest(string)
end

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