Rails - 为什么 RAILS_ROOT/lib 内的模型在生产模式下不可用？
我有一个位于 RAILS_ROOT/lib 文件夹内的类，我在我的一个助手中使用它，并且它在开发中效果很好。
当我切换到生产环境时，应用程序抛出一个 NameError (uninitializedconstant SomeHelper::SomeClass)，我必须在助手中手动加载它：
load "#{Rails.root}/lib/some_class.rb"
module SomeHelper
def some_method
sc = SomeClass.new
# blah
end
end
我的印象是 RAILS_ROOT/lib/ 中的所有内容* 应该对应用程序可用 - 我需要配置什么才能在生产模式下发生这种情况吗？谢谢。
I have a class located inside RAILS_ROOT/lib folder, which I use in one of my helpers, and it works great in development.
When I switch to production, the application throws a NameError (uninitialized constant SomeHelper::SomeClass), and I have to load it manually in the helper:
load "#{Rails.root}/lib/some_class.rb"
module SomeHelper
def some_method
sc = SomeClass.new
# blah
end
end
I was under the impression that everything inside RAILS_ROOT/lib/* should be available all to the app - is there anything I need to configure to make this happen in prod mode? thanks.
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当你调用 SomeHelper::SomeClass 时，Rails 的自动加载机制将尝试加载 lib/some_helper/some_class.rb 处的文件。Rails
不会加载 lib/* 中的所有内容，它只会在发生 ConstMissing 时尝试加载文件。
When you call SomeHelper::SomeClass, Rails' autoloading mechanism will try to load file at lib/some_helper/some_class.rb
Rails won't load everything in lib/*, it will only try to load files when ConstMissing occurs.
您可能需要检查开发环境和生产环境之间的配置设置之间的差异：
config/environments/development.rb 和 config/environments/development.rb。
在 Rails 初始化例程中，会调用
load_plugins()来加载config.plugin_paths中的所有插件。您需要确保包含您的文件夹lib/，例如除了
config.plugin_paths之外，您还可以命名应该命名的插件加载到config.plugins中。如果该变量包含:all则将加载所有（找到的）插件。（顺便说一句：与任一环境相同的配置设置应位于 config/environment.rb 中。环境之间的任何差异均取决于相应 .rb 文件中的设置。）
You might need to check differences between the configuration settings between development and production environment:
config/environments/production.rbandconfig/environments/development.rb.During the Rails initialization routine,
load_plugins()is called which loads all plugins inconfig.plugin_paths. You need to make sure that your folderlib/is included, like inIn addition to
config.plugin_paths, you can also name the plugins that should be loaded inconfig.plugins. If that variable contains:allthen all plugins (found) will be loaded.(By the way: configuration settings equal to either environment should go in
config/environment.rb. Any differences between enviroments are due to settings in the respective.rbfiles.)