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Asked: 2026-05-20T05:01:45+00:00

I am using Rails 2.3.5, and in it, to autoload classes from lib folder,

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I am using Rails 2.3.5, and in it, to autoload classes from lib folder, we just have to name the files according to their classnames

lib/auto_run.rb --> class AutoRun
lib/code_snippets/category_code --> class CodeSnippets::CategoryCode

It is similar to the Rails model naming except for the s. Here, I am confused about the latter one. Here, I havent defined a module or another class CodeSnippets anywhere. Then how can I use :: operator?

Also is there any other ways of folder structure so that Rails could autoload classes without writing extra code?

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  1. Editorial Team

    In CodeSnippets::CategoryCode you don’t need to declare CodeSnippets because it is not more than a namespace, it is not a Module or a Class

    This classes just get autoloaded because by convention, all the files in lib/ get autoloaded, in the same way the /models and the controller/ folders get also autoloaded.

    If you want to get more folders autoloaded you have to add them to the load_paths config variable in environment.rb like this:

      config.load_paths += %W(#{RAILS_ROOT}/app/middleware)
  config.load_paths += %W(#{RAILS_ROOT}/app/observers)
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