Where is the code for "{{store url="example/example"}}

Question

I would like to know how Magento converts {{store url="example/example"}} into http://www.example.com/example/example/

Answer 1

In Mage_Core_Model_Email_Template_Filter::storeDirective().

Don't be confused by the class name, Mage_Cms_Model_Template_Filter extends from it and the basic functionality of these directives¹ is in the base class Varien_Filter_Template. Not the best class hierarchy, I know.

Look at the filter() method in Varien_Filter_Template, this is what is called when a CMS page or email template is rendered.

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^{1) all the {{stuff in curly brackets}}}

Answer 2

Mage_Core_Model_Email_Template_Filter::storeDirective

Which is called from Varien_Filter_Template::filter and specifically the section below which matches the CONSTRUCTION_PATTERN (stuff in double curly braces).

Then strips out the type e.g {{store url=""}} would be store this type is then prefixed to the word 'Directive' to form the callback method name into which the matched string is passed.

$callback = array($this, $construction[1].'Directive');

 if(preg_match_all(self::CONSTRUCTION_PATTERN, $value, $constructions, PREG_SET_ORDER)) {
                foreach($constructions as $index=>$construction) {
                    ...
                    $callback = array($this, $construction[1].'Directive');
                    ...
                        $replacedValue = call_user_func($callback, $construction);
                    ...
                    $value = str_replace($construction[0], $replacedValue, $value);
                }
            }