无法使用 rails 应用程序中 lib 文件夹内定义的 class

Question

我在 rails 应用 lib/pundit/current_context.rb 的 lib 文件夹中创建了一个 class :

class CurrentContext
  attr_reader :user, :account_asso

  def initialize(user, account_asso)
    @user = user
    @account_asso = account_asso
  end
end

然后在我的 base_controller 中调用此 class :

  def pundit_user
    CurrentContext.new(current_user, account_asso)
  end

我总是得到：

NameError - uninitialized constant Api::V1::BaseController::CurrentContext:

我想这可能是因为我没有加载 lib 中的文件？所以我在 config/application.rb 文件中添加了 config.autoload_paths << Rails.root.join('lib') :

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

require "rails"
# 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 QuickBedApi
  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
    config.middleware.insert_before 0, "Rack::Cors" do
      allow do
        origins '*'
        resource '*', :headers => :any, :methods => [:get, :post, :options]
      end
    end
    # Do not swallow errors in after_commit/after_rollback callbacks.
    config.active_record.raise_in_transactional_callbacks = true
    config.autoload_paths << Rails.root.join('lib')
  end

end

不幸的是，我仍然遇到错误。我该如何解决？

Answer 1

尝试包含 lib:

的所有文件夹

config.autoload_paths.concat `find -type d`.split($/).map {|f| Rails.root.join(f) }

Answer 2

config.autoload_paths += Dir["#{config.root}/lib/**/"]

Answer 3

我在调用 lib 文件夹的模块时遇到了同样的问题。

即使 "config.autoload_paths += %W(#{config.root}/lib)" 对我也不起作用。

经过一些研究，我发现我必须在我的文件中放入“require 'my_modules' "in addition of the " include MyModules”才能调用它。

所以你可以尝试要求它

无法使用 rails 应用程序中 lib 文件夹内定义的 class

Cant use class defined inside lib folder in rails app

load

ruby-on-rails

class