Joshua Morey | 2014-01-27

Skhema Filters

I finally decided on a syntax, so Skhema now has filter support. As a result, I have updated Bramble by moving the markdown parser references from models to views (where they always belonged). Skhema templates can now use filters on variables like {$var:filter[key1,key2=val]}, where brackets contain the optional filter parameters. This is shown in the following template that Bramble uses during the rendering of this post.

<div class="article">
<div class="title">
<h2><a href="{$url}">{$title}</a></h2>
<div class="post">
<div class="entry">

The subvert filter handler needs to be registered with the TemplateManager, and any applicable filter options are the responsibility of the filter handler. From this example template, the Subvert renderer enables code formatting, sets a root URL for relative URL handling, and sets the current header level at h3 (because the page design already uses h1 and h2).

TemplateManager::RegisterFilter('subvert', function($var, $filter_options, $context) {
// handle options
// ...
return Subvert::Parse($var, $options);

I added user-defined function handlers, in addition to filters, because they use the same mechanism. I just don't have any use-cases for them at this time.