LoadError：无法加载此类文件-Heroku Ruby on Rails上的travis

Question

我将Travis CI用于Ruby on Rails应用程序，并且我的构建成功并将其推送到Heroku。 当我尝试检查Heroku上的端点时，出现应用程序错误。

我要研究的问题是通过从应用程序的根目录运行heroku rake db:migrate --app AppNameHere来进行的，它填充了以下错误：

Running rake db:migrate on lawville... up, run.9338 (Free)
rake aborted!
LoadError: cannot load such file -- travis
/app/config/application.rb:11:in `require'
/app/config/application.rb:11:in `<top (required)>'
/app/Rakefile:4:in `require'
/app/Rakefile:4:in `<top (required)>'
/app/vendor/bundle/ruby/2.2.0/gems/rake-11.3.0/exe/rake:27:in `<top (required)>'

app / config / application.rb （错误的第11行是`require'travis'）

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

require 'rails/all'
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 'travis'
require 'nokogiri'
require 'carrierwave'
require 'simple_form'
require 'social-share-button'
require 'redactor-rails'
require 'devise'

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

module LawVille
  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

Travis Build（以防万一可以解决我的问题）

https://travis-ci.org/AfolabiOlaoluwa/LawVille/builds/166891343

我的应用程序与application.rb中的内容一起在开发中工作。

我该怎么做才能解决这个问题？ 提前致谢。

Answer 1

我发现导致问题的原因是因为我在开发组中放置了宝石，这是错误的，进而使Heroku出现了加载错误。

从开发组中删除gems并将其全局化后，我还从config/application.rb删除了我自己需要的所有gems，因此我的application.rb变成了：

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

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

module LawVille
  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

然后它起作用了。

Answer 2

从application.rb中删除require 'travis'

可以肯定的是，travis仅具有将发布后推送到项目存储库的钩子。 在开发中没有对您造成错误的原因是，您（最有可能）已安装travis gem。 Heroku却没有。 从而导致生产失败。

有关更清晰的图片，请参见Travis Ruby Docs 。