application_helper.rb

来自「ruby on rails web敏捷开发之路第二版 源代码」· RB 代码 · 共 18 行

#---
# Excerpted from "Agile Web Development with Rails, 2nd Ed."
# We make no guarantees that this code is fit for any purpose. 
# Visit http://www.pragmaticprogrammer.com/titles/rails2 for more book information.
#---
# Methods added to this helper will be available to all templates in the application.
module ApplicationHelper
  # hacked version so scripts and stylesheets get full paths
  def compute_public_path(source, dir, ext)
    source  = "/#{dir}/#{source}" unless source.first == "/" || source.include?(":")
    source << ".#{ext}" unless source.split("/").last.include?(".")
    source << '?' + rails_asset_id(source) if defined?(RAILS_ROOT) && %r{^[-a-z]+://} !~ source
    source  = "#{@controller.request.relative_url_root}#{source}" unless %r{^[-a-z]+://} =~ source
    source = "#{controller.request.protocol}#{controller.request.host_with_port}#{controller.request.relative_url_root.to_s}" + source
    source
  end
end