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>
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'
答案 0 :(得分：-1)
确保你的Gemfile中有bcrypt gem：
https://www.railstutorial.org/book/modeling_users#code-password_migration