Question

我正在通过rails教程工作，我正在尝试test a valid user login.但是，当我运行测试时，我得到NoMethodError：未定义的方法`digest'。我看了一切，我不明白为什么我得到这个错误。我甚至使用复制/粘贴教程代码来确保它不是拼写错误或我在输入时错过的其他内容。

这是我的用户模型：

class User < ApplicationRecord
  before_save { email.downcase! }
  validates :name, presence: true, length: { maximum: 50 }
  VALID_EMAIL_REGEX = /\A[\w+\-.]+@[a-z\d\-]+(\.[a-z\d\-]+)*\.[a-z]+\z/i
  validates :email, presence: true, length: { maximum: 255 },
                    format: { with: VALID_EMAIL_REGEX },
                    uniqueness: { case_sensitive: false }
  has_secure_password
  validates :password, presence: true, length: { minimum: 6 }

  def User.digest(string)
      cost = ActiveModel::SecurePassword.min_cost ? BCrypt::Engine::MIN_COST :
                                                    BCrypt::Engine.cost
      BCrypt::Password.create(string, cost: cost)
  end
end

和我的夹具：

test_user:
    name: Test User
    email: testuser@example.com
    password_digest: <%= User.digest('password') %>

和我的测试：

test "login with valid information" do
  get login_path
  post login_path, params: { session: { email:    @user.email,
                                        password: 'password' } }
  assert_redirected_to @user
  follow_redirect!
  assert_template 'users/show'
  assert_select "a[href=?]", login_path, count: 0
  assert_select "a[href=?]", logout_path
  assert_select "a[href=?]", user_path(@user)
end

我很难过，所以感谢任何建议。

堆栈追踪：

NoMethodError: undefined method `digest' for #<User:0x000000069b8c18>

你的意思是？消化来自/usr/local/rvm/gems/ruby-2.3.0/gems/activemodel-5.0.0.1/lib/active_model/attribute_methods.rb:433:in

method_missing'
    from (irb):8
    from /usr/local/rvm/gems/ruby-2.3.0/gems/railties-5.0.0.1/lib/rails/commands/console.rb:65:in

start' 来自/usr/local/rvm/gems/ruby-2.3.0/gems/railties-5.0.0.1/lib/rails/commands/console_helper.rb:9:in

start'
    from /usr/local/rvm/gems/ruby-2.3.0/gems/railties-5.0.0.1/lib/rails/commands/commands_tasks.rb:78:in

console' 来自/usr/local/rvm/gems/ruby-2.3.0/gems/railties-5.0.0.1/lib/rails/commands/commands_tasks.rb:49:in

run_command!'
    from /usr/local/rvm/gems/ruby-2.3.0/gems/railties-5.0.0.1/lib/rails/commands.rb:18:in

' 来自/usr/local/rvm/gems/ruby-2.3.0/gems/activesupport-5.0.0.1/lib/active_support/dependencies.rb:293:in

require'
    from /usr/local/rvm/gems/ruby-2.3.0/gems/activesupport-5.0.0.1/lib/active_support/dependencies.rb:293:in

块中的'require' 来自/usr/local/rvm/gems/ruby-2.3.0/gems/activesupport-5.0.0.1/lib/active_support/dependencies.rb:259:in

load_dependency'
    from /usr/local/rvm/gems/ruby-2.3.0/gems/activesupport-5.0.0.1/lib/active_support/dependencies.rb:293:in

require' 来自/ home / ubuntu / workspace / bin / rails：9：in

<top (required)>'
    from /usr/local/rvm/gems/ruby-2.3.0/gems/activesupport-5.0.0.1/lib/active_support/dependencies.rb:287:in

load' 来自/usr/local/rvm/gems/ruby-2.3.0/gems/activesupport-5.0.0.1/lib/active_support/dependencies.rb:287:in

block in load'
    from /usr/local/rvm/gems/ruby-2.3.0/gems/activesupport-5.0.0.1/lib/active_support/dependencies.rb:259:in

load_dependency' 来自/usr/local/rvm/gems/ruby-2.3.0/gems/activesupport-5.0.0.1/lib/active_support/dependencies.rb:287:in

load'
    from /usr/local/rvm/gems/ruby-2.3.0/gems/spring-1.7.2/lib/spring/commands/rails.rb:6:in

call' 来自/usr/local/rvm/gems/ruby-2.3.0/gems/spring-1.7.2/lib/spring/command_wrapper.rb:38:in

call'
    from /usr/local/rvm/gems/ruby-2.3.0/gems/spring-1.7.2/lib/spring/application.rb:191:in

阻止发送' 来自/usr/local/rvm/gems/ruby-2.3.0/gems/spring-1.7.2/lib/spring/application.rb:161:in

fork'
    from /usr/local/rvm/gems/ruby-2.3.0/gems/spring-1.7.2/lib/spring/application.rb:161:in

发送' 来自/usr/local/rvm/gems/ruby-2.3.0/gems/spring-1.7.2/lib/spring/application.rb:131:in

block in run'
    from /usr/local/rvm/gems/ruby-2.3.0/gems/spring-1.7.2/lib/spring/application.rb:125:in

loop' 来自/usr/local/rvm/gems/ruby-2.3.0/gems/spring-1.7.2/lib/spring/application.rb:125:in

run'
    from /usr/local/rvm/gems/ruby-2.3.0/gems/spring-1.7.2/lib/spring/application/boot.rb:19:in

' 来自/usr/local/rvm/rubies/ruby-2.3.0/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:in

require'
    from /usr/local/rvm/rubies/ruby-2.3.0/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:in

require'

Answer 1

确保你的Gemfile中有bcrypt gem：

https://www.railstutorial.org/book/modeling_users#code-password_migration

NoMethodError：未定义的方法`digest'

1 个答案: