Question

Is it possible to get current category when Full Page Cache is enabled?
Catalog controller is not executed in this case, so the registry (current_category key) is empty. All I can get is the root category

Thanks

Answer 1

As one of the possible solution is to get category ID by given url. You have table of url rewrites and you have request string.

    // Try to get category id directly from request
    if (Mage::app()->getRequest()->getParam('id')) {
        return Mage::app()->getRequest()->getParam('id');
    }
    // Try to get category id from request by rewrite request path
    $aliases = Mage::app()->getRequest()->getAliases();
    if ($aliases && is_array($aliases) && !empty($aliases) && $aliases['rewrite_request_path']) {
        $urlRewrite = Mage::getModel('core/url_rewrite')->loadByRequestPath($aliases['rewrite_request_path']);
        if ($urlRewrite && $urlRewrite->getId()) {
            return $urlRewrite->getCategoryId();
        }
    }

May be it’s not beautiful solution but it worked well for me.