class Rails::Paths::Root

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 through a Hash-like API. It requires you to give a physical path on initialization.

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

The above command creates a new root object and adds “app/controllers” as a path. This means we can get a Rails::Paths::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 enumerable and allows you to easily add extra paths:

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

path << "lib/controllers"
path.to_ary.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 "/rails"
root.add "app/controllers"

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

Check the Rails::Paths::Path documentation for more information.

# File railties/lib/rails/paths.rb, line 54
def initialize(path)
  @path = path
  @root = {}
end

# File railties/lib/rails/paths.rb, line 69
def [](path)
  @root[path]
end

# File railties/lib/rails/paths.rb, line 59
def []=(path, value)
  glob = self[path] ? self[path].glob : nil
  add(path, with: value, glob: glob)
end

# File railties/lib/rails/paths.rb, line 64
def add(path, options = {})
  with = Array(options.fetch(:with, path))
  @root[path] = Path.new(self, path, with, options)
end

# File railties/lib/rails/paths.rb, line 85
def all_paths
  values.tap(&:uniq!)
end

# File railties/lib/rails/paths.rb, line 89
def autoload_once
  filter_by(&:autoload_once?)
end

# File railties/lib/rails/paths.rb, line 97
def autoload_paths
  filter_by(&:autoload?)
end

# File railties/lib/rails/paths.rb, line 93
def eager_load
  filter_by(&:eager_load?)
end

# File railties/lib/rails/paths.rb, line 77
def keys
  @root.keys
end

# File railties/lib/rails/paths.rb, line 101
def load_paths
  filter_by(&:load_path?)
end

# File railties/lib/rails/paths.rb, line 73
def values
  @root.values
end

# File railties/lib/rails/paths.rb, line 81
def values_at(*list)
  @root.values_at(*list)
end