Best way to load module/class from lib folder in Rails 3?

ruby-on-rails class module autoload ruby-on-rails-3
Vincent picture Vincent · Jul 28, 2010 · Viewed 135.6k times · Source

Since the latest Rails 3 release is not auto-loading modules and classes from lib anymore, what would be the best way to load them?

From github:

A few changes were done in this commit:

Do not autoload code in *lib* for applications (now you need to explicitly 
require them). This makes an application behave closer to an engine 
(code in lib is still autoloaded for plugins);

Answer

Slobodan Kovacevic picture Slobodan Kovacevic · Jul 28, 2010

As of Rails 2.3.9, there is a setting in config/application.rb in which you can specify directories that contain files you want autoloaded.

From application.rb:

# Custom directories with classes and modules you want to be autoloadable.
# config.autoload_paths += %W(#{config.root}/extras)

Related questions

Rails /lib modules and

I am writing a custom wrapper for open_flash_chart plugin. It's placed in /lib and load it as a module in ApplicationController. However, I have some Class hierarchy or smth problem. From any controller I can access open_flash_…

Read More
What is mattr_accessor in a Rails module?

I couldn't really find this in Rails documentation but it seems like 'mattr_accessor' is the Module corollary for 'attr_accessor' (getter & setter) in a normal Ruby class. Eg. in a class class User attr_accessor :name def set_…

Read More
How to instantiate class from name string in Rails?

How we can instantiate class from it's name string in Ruby-on-Rails? For example we have it's name in database in format like "ClassName" or "my_super_class_name". How we can create object from it? Solution: Was looking for it …

Read More