Rails教程ch 7.2.3 has_password？未定义的方法

在迈克尔·哈特尔的Ruby on Rails的教程，ch 7.2.3，RSpec的就是返回以下错误：Rails教程ch 7.2.3 has_password？未定义的方法

Failures: 

1) User has_password? method should be true if the passwords match 
Failure/Error: @user.has_password?(@attr[:password].should be_true) 
NoMethodError: 
    undefined method `has_password?' for nil:NilClass 
# ./spec/models/user_spec.rb:132:in `block (3 levels) in <top (required)>' 

2) User has_password? method should be false if the passwords don't match 
Failure/Error: @user.has_password?("invalid").should be_false 
NoMethodError: 
    undefined method `has_password?' for nil:NilClass 
# ./spec/models/user_spec.rb:136:in `block (3 levels) in <top (required)>' 

Finished in 0.23931 seconds 
18 examples, 2 failures 

Failed examples: 

rspec ./spec/models/user_spec.rb:131 # User has_password? method should be true if the passwords match 
rspec ./spec/models/user_spec.rb:135 # User has_password? method should be false if the passwords don't match

在控制台中，我还对“确认密码”

得到一个未定义的局部变量错误我彻底检查了我的代码，找不到差异，但我显然做错了。

这里是我的用户模型：

require 'digest' 

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

    email_regex = /\A[\w+\-.][email protected][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 

    def has_password?(submitted_password) 
     self.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(string) 
    Digest::SHA2.hexdigest(string) 
    end 

end

来源

2011-09-09 Jack Frost

我们就需要看到规范;问题在于你所说的是零，而不是该方法不存在。您确定正在加载和检索适当的测试数据吗？ –

你如何在规范中设置@user？听起来像你还没有初始化它。 –

确保该位是在你的天赋，听起来就像它缺少

before(:each) do 
    @user = User.create!(@attr) 
end

来源

2011-09-09 20:42:01

是的，这是从has_password丢失？方法。谢谢！ –

很高兴它的工作，干杯。 –

Rails教程ch 7.2.3 has_password？未定义的方法

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