我应该在rails应用程序中将自己的“模块”放在哪里？

Some functionality within my rails application looks better as if it was a separate "module", that should be accessed via require. For example, assume it's a function to calculate Fibonacci numbers.

我的rails应用程序中的某些功能看起来更好,就好像它是一个单独的“模块”,应该通过require访问。例如,假设它是计算斐波纳契数的函数。

The functionality is independent on rails application and can be reused in other projects, so it should not be stored near application controllers and models, I suppose. But since I'm not going to detach it into separate project, thus placing it to vendor folder seems like not the right thing.

该功能独立于rails应用程序,可以在其他项目中重用,因此我不应该将它存储在应用程序控制器和模型附近。但是因为我不打算将它分离到单独的项目中,所以把它放到供应商文件夹似乎不是正确的事情。

Where should I place it then?

我应该把它放在哪里?

3 个解决方案

#1

The place to put reusable code such as this is in the lib directory. However you do not need to require anything as lib is already in the load path and it's contents will be loaded during initialization.

放置可重用代码的地方就在lib目录中。但是,您不需要任何内容,因为lib已经在加载路径中,并且它的内容将在初始化期间加载。

If you need to extend an existing class, you define your module first and then include it by sending it as a message to the class you wish to extend, e.g.

如果您需要扩展现有类,则首先定义模块,然后通过将其作为消息发送到您希望扩展的类来包含它,例如:

module MyExtensions
  def self.included base
    base.instance_eval do
      def my_new_method
        …
      end
    end
  end
end

ActiveRecord::Base.send :include, MyExtensions

#2

There is a lib directory in RoR projects which fits well for that purpose - I place common bits of code in form of "libraries" there. Anything from extending ActiveRecord classes to reusable utility methods.

RoR项目中有一个lib目录,非常适合这个目的 - 我在那里以“库”的形式放置了常见的代码。从将ActiveRecord类扩展到可重用的实用程序方法的任何事情。

#3

I'll often put stuff in lib, it turns out that anything under lib is in the load path and doesn't need to be required at all.

我经常把东西放在lib中,事实证明lib下的任何东西都在加载路径中,根本不需要。

edit: After Steve's comment, removed the bit about having to require the files. Also, removed a couple requires from some of my code :P

编辑:史蒂夫的评论后,删除了有关必须要求文件的位。另外,从我的一些代码中删除了一对夫妇:P

#1