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Action Controller UrlFor ↑

Includes url_for into the host class. The class has to provide a RouteSet by implementing the _routes method. Otherwise, an exception will be raised.

In addition to AbstractController::UrlFor, this module accesses the HTTP layer to define URL options like the host. In order to do so, this module requires the host class to implement env which needs to be Rack-compatible, and request which returns an ActionDispatch::Request instance.

class RootUrl
  include ActionController::UrlFor
  include Rails.application.routes.url_helpers

  delegate :env, :request, to: :controller

  def initialize(controller)
    @controller = controller
    @url        = root_path # named route from the application.
  end
end
Methods
N
U
Included Modules

Class Public methods

new(...)

Source: show | on GitHub 

# File actionpack/lib/action_controller/metal/url_for.rb, line 32
def initialize(...)
  super
  @_url_options = nil
  @_url_options_with_script_name = nil
end

Instance Public methods

url_options()

Source: show | on GitHub 

# File actionpack/lib/action_controller/metal/url_for.rb, line 38
def url_options
  @_url_options ||= {
    host: request.host,
    port: request.optional_port,
    protocol: request.protocol,
    _recall: request.path_parameters,
    **super,
  }.freeze

  if (same_origin = _routes.equal?(request.routes)) ||
     (script_name = request.engine_script_name(_routes)) ||
     (original_script_name = request.original_script_name)

    if original_script_name
      { **@_url_options, original_script_name: original_script_name }.freeze
    else
      effective_script_name = same_origin ? request.script_name : script_name

      # Memoized per script_name value, compared on every call: the
      # script name only changes around engine dispatch, but a stale
      # hash must never be served if it does.
      cached = @_url_options_with_script_name
      if cached && cached[:script_name] == effective_script_name
        cached
      else
        script_name = effective_script_name.empty? ? "" : effective_script_name.dup
        @_url_options_with_script_name = { **@_url_options, script_name: script_name }.freeze
      end
    end
  else
    @_url_options
  end
end