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#1 Zen not required...

Eric Weik's picture

Submitted by Eric Weik on Wed, 03/24/2010 - 11:24.

Hi Andre,

Yes, you can implement this in any theme. Add the
function THEME_preprocess_page(&$vars, $hook) {} code from my example to your template.php (replacing THEME with your theme name). It calls a Zen theme function called zen_id_safe(), so you'll need to implement this in your theme as provided by the Zen theme (it just makes sure that the id output conforms to W3C specifications for ID attributes).

If I were you, I would download the Zen theme and open up zen/zen/template.php, and simply copy and paste the zen_id_safe function declaration into your theme's template.php. While it is open, poke around and see how the Zen theme does things. Even when I am doing theme development "from scratch", I often pull in parts of the Zen theme as recipes. It does a number of useful things.

Or if you want, you can just copy and paste from here:

<?php
/**
* Converts a string to a suitable html ID attribute.
*
* <a href="http://www.w3.org/TR/html4/struct/global.html#h-7.5.2" title="http://www.w3.org/TR/html4/struct/global.html#h-7.5.2">http://www.w3.org/TR/html4/struct/global.html#h-7.5.2</a> specifies what makes a
* valid ID attribute in HTML. This function:
*
* - Ensure an ID starts with an alpha character by optionally adding an 'id'.
* - Replaces any character except alphanumeric characters with dashes.
* - Converts entire string to lowercase.
*
* @param $string
*   The string
* @return
*   The converted string
*/
function zen_id_safe($string) {
  // Replace with dashes anything that isn't A-Z, numbers, dashes, or underscores.
  return strtolower(preg_replace('/[^a-zA-Z0-9-]+/', '-', $string));
}
?>

I hope this helps! -Eric

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