Ruby on Rails - 无法运行以下命令：rails 生成 rspec:install

Question

我正在学习 Rails 教程第 3 章。

我无法执行以下命令。如果你有解决这个问题的想法，请告诉我。

谢谢。

执行命令

bundle exec rails generate rspec:install

错误

/Users/mofuty/rails_projects/sample_app/config/application.rb:5:in `require': cannot load such file -- active_job/railtie (LoadError)
    from /Users/mofuty/rails_projects/sample_app/config/application.rb:5:in `<top (required)>'
    from /Users/mofuty/.rbenv/versions/2.1.2/lib/ruby/gems/2.1.0/gems/railties-4.0.5/lib/rails/commands.rb:43:in `require'
    from /Users/mofuty/.rbenv/versions/2.1.2/lib/ruby/gems/2.1.0/gems/railties-4.0.5/lib/rails/commands.rb:43:in `<top (required)>'
    from bin/rails:8:in `require'
    from bin/rails:8:in `<main>'

宝石文件

source 'https://rubygems.org'
ruby '2.1.2'
#ruby-gemset=railstutorial_rails_4_0

gem 'rails', '4.0.5'

group :development, :test do
  gem 'sqlite3', '1.3.8'
  gem 'rspec-rails', '2.13.1'
end

group :test do
  gem 'selenium-webdriver', '2.35.1'
  gem 'capybara', '2.1.0'
end

gem 'sass-rails', '4.0.5'
gem 'uglifier', '2.1.1'
gem 'coffee-rails', '4.0.1'
gem 'jquery-rails', '3.0.4'
gem 'turbolinks', '1.1.1'
gem 'jbuilder', '1.0.2'

group :doc do
  gem 'sdoc', '0.3.20', require: false
end

group :production do
  gem 'pg', '0.15.1'
  gem 'rails_12factor', '0.0.2'
end

以下是apprication.rb。如果您需要更多详细信息，请问我。

config/application.rb

require File.expand_path('../boot', __FILE__)

# Pick the frameworks you want: require "active_model/railtie" require "active_job/railtie" require "active_record/railtie" require "action_controller/railtie" require "action_mailer/railtie" require "action_view/railtie" require "sprockets/railtie"
# require "rails/test_unit/railtie"

# Require the gems listed in Gemfile, including any gems
# you've limited to :test, :development, or :production. Bundler.require(*Rails.groups)

module SampleApp   class Application < Rails::Application
    # Settings in config/environments/* take precedence over those specified here.
    # Application configuration should go into files in config/initializers
    # -- all .rb files in that directory are automatically loaded.

    # Set Time.zone default to the specified zone and make Active Record auto-convert to this zone.
    # Run "rake -D time" for a list of tasks for finding time zone names. Default is UTC.
    # config.time_zone = 'Central Time (US & Canada)'

    # The default locale is :en and all translations from config/locales/*.rb,yml are auto loaded.
    # config.i18n.load_path += Dir[Rails.root.join('my', 'locales', '*.{rb,yml}').to_s]
    # config.i18n.default_locale = :de

    # Do not swallow errors in after_commit/after_rollback callbacks.
    config.active_record.raise_in_transactional_callbacks = true   end end

Answer 1

尝试bundle exec rails generate rspec:install

bundle exec 是一个 Bundler 命令，用于在当前包（您目录的 Gemfile 中的那个）上下文中执行脚本

Answer 2

听起来好像您的测试套件正在调用一些依赖于 Rails 4.

的新 ActiveJob framework 的代码

该错误表明您的 config/application.rb 文件中没有包含 railtie。如果你打开它，你可能会发现它被注释掉了，寻找这样一行：# require "active_job/railtie"

如果是，请取消注释。如果该行未包含在文件中，请在此 require "active_model/railtie".

之后的新行中添加 require "active_job/railtie"

这将确保在 Rails 初始化时加载活动作业 railtie。

Answer 3

感谢您的建议。问题是我用 rails 4.2.x 执行了 rails new。所以，我用 4.0.5 重建项目。然后我可以执行bundle exec rails generate rspec:install。我很感激你。

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