require 'cgi'
require File.dirname(__FILE__) + '/url_helper'
require File.dirname(__FILE__) + '/tag_helper'
module ActionView
module Helpers
# Provides methods for linking a HTML page together with other assets, such as javascripts, stylesheets, and feeds.
module AssetTagHelper
# Returns a link tag that browsers and news readers can use to auto-detect a RSS or ATOM feed for this page. The +type+ can
# either be :rss (default) or :atom and the +options+ follow the url_for style of declaring a link target.
#
# Examples:
# auto_discovery_link_tag # =>
#
# auto_discovery_link_tag(:atom) # =>
#
# auto_discovery_link_tag(:rss, :action => "feed") # =>
#
def auto_discovery_link_tag(type = :rss, options = {})
tag(
"link", "rel" => "alternate", "type" => "application/#{type}+xml", "title" => type.to_s.upcase,
"href" => url_for(options.merge(:only_path => false))
)
end
# Returns a script include tag per source given as argument. Examples:
#
# javascript_include_tag "xmlhr" # =>
#
#
# javascript_include_tag "common.javascript", "/elsewhere/cools" # =>
#
#
def javascript_include_tag(*sources)
sources.collect { |source|
source = "/javascripts/#{source}" unless source.include?("/")
source = "#{source}.js" unless source.include?(".")
content_tag("script", "", "language" => "JavaScript", "type" => "text/javascript", "src" => source)
}.join("\n")
end
# Returns a css link tag per source given as argument. Examples:
#
# stylesheet_link_tag "style" # =>
#
#
# stylesheet_link_tag "random.styles", "/css/stylish" # =>
#
#
def stylesheet_link_tag(*sources)
sources.collect { |source|
source = "/stylesheets/#{source}" unless source.include?("/")
source = "#{source}.css" unless source.include?(".")
tag("link", "rel" => "Stylesheet", "type" => "text/css", "media" => "screen", "href" => source)
}.join("\n")
end
end
end
end