This object is an extended hash that behaves as root of the Rails::Paths system. It allows you to collect information about how you want to structure your application paths by a Hash like API. It requires you to give a physical path on initialization.

root = Root.new
root.add "app/controllers", :eager_load => true

The command above creates a new root object and add “app/controllers” as a path. This means we can get a Path object back like below:

path = root["app/controllers"]
path.eager_load?               # => true
path.is_a?(Rails::Paths::Path) # => true

The Path object is simply an array and allows you to easily add extra paths:

path.is_a?(Array) # => true
path.inspect      # => ["app/controllers"]

path << "lib/controllers"
path.inspect      # => ["app/controllers", "lib/controllers"]

Notice that when you add a path using #add, the path object created already contains the path with the same path value given to #add. In some situations, you may not want this behavior, so you can give :with as option.

root.add "config/routes", :with => "config/routes.rb"
root["config/routes"].inspect # => ["config/routes.rb"]

The #add method accepts the following options as arguments: eager_load, autoload, autoload_once and glob.

Finally, the Path object also provides a few helpers:

root = Root.new
root.path = "/rails"
root.add "app/controllers"

root["app/controllers"].expanded # => ["/rails/app/controllers"]
root["app/controllers"].existent # => ["/rails/app/controllers"]

Check the Path documentation for more information.

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