Making it better

Posted by Jeremy Voorhis Fri, 02 Dec 2005 01:12:00 GMT

It’s even easier like this:

in app/views/layouts/application.rhtml: 
<%= xhtml_doctype :strict %>
<%= html_tag :lang => Globalize::Locale.active.language.iso_639_1 %>
<%= @content_for_layout %>
<%= end_html_tag %>
and in app/helpers/application_helper.rb: 
module ApplicationHelper
  # Renders an xhtml doctype declaration for the document's prolog. Defaults to xhtml transitional.
  # <tt>xhtml_doctype :strict</tt>
  def xhtml_doctype( doctype=:transitional )
    doctype = :transitional unless [:transitional, :strict, :frameset].include? doctype
    case doctype
    when :transitional
      '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">'
    when :strict
      '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">'
    when :frameset
      '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Frameset//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-frameset.dtd">'
    end
  end

  # Displays an html tag, complete with xhtml namespace and language. Accepts language as an option, but defaults to English.
  # <tt>html_tag :lang => 'de'</tt>
  def html_tag( options={} )
    options[:lang] ||= 'en'
    lang = options.delete( :lang )
    "<html xmlns=\"http://www.w3.org/1999/xhtml\" lang=\"#{lang}\" xml:lang=\"#{lang}\" #{options.map { |k,v| "#{k}=\"#{v}\"" }.join( ' ' )}>" 
  end

  # End html tag.
  def end_html_tag; "</html>" end
end

I plan to release this and some other small http/html-related gems as a plugin soon, so keep an eye out.

Comments

Leave a response

  1. Chris Anderson said about 11 hours later:

    This looks like a convenient plugin if there ever was one. Maybe an (optional) built-in link to the validator in the footer would discourage miss-use of the doc type declarations.

  2. Jeremy Voorhis said about 24 hours later:

    I don’t like the validator buttons much myself, and wouldn’t want to impose that upon anyone. It also seems beyond the scope of what the plugin would encompass – utilities for correctly using and getting more out of html and http, but not necessarily bragging about it :)

  3. Johan said 9 days later:

    Not sure here – but shouldn’t one of lang or xml:lang be picked? (depending on how it’s served; application/xml or text/html)

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