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frznk-tank/application.html.slim

Created February 25, 2012 12:36
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View helper for adding IE conditional classes to the <html> tag.
Raw
application.html.slim
doctype 5
= ie_conditional_classes do
head
meta charset="utf-8"
meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"
title Cool App
meta name="viewport" content="width=device-width"
= stylesheet_link_tag "application", media: "all"
= javascript_include_tag "modernizr"
= csrf_meta_tags
body
= javascript_include_tag "application"
Raw
application_helper.rb
module ApplicationHelper
def ie_conditional_classes(options={}, &block)
content = capture(&block)
output = ActiveSupport::SafeBuffer.new
versions = ["lt IE 7", "IE 7", "IE 8", "gt IE 8"]
versions.each do |version|
default = version == versions.last
css_class = default ? nil : version.gsub(/IE /,"ie").gsub(/ /,"-")
html_tag = tag(:html, {class: ["no-js", css_class].compact, lang: "en"}, true)
output.safe_concat("<!--[if #{version}]>#{default ? "<!-->" : nil} #{html_tag} #{default ? "<!--" : nil}<![endif]-->\n")
end
output << content
output.safe_concat("\n</html>")
end
end
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