Aelia Tax Display and Currency Converter Widget

Aelia provides a plugin for Wp SuperCache. I followed their instructions and it almost works. I also added this to functions:

function myplugin_add_wpsc_plugin_filter( $plugin ) {
$plugin->wpsc_add_plugin(‘Aelia_Internationalisation_WPSuperCache’);
return $plugin;
}
add_filter( ‘wpsc_plugin’, ‘myplugin_add_wpsc_plugin_filter’ );

What does not work is to use an external plugin folder that is defined in wp-config.

I defined folder and path:

$wp_cache_plugins_dir = ‘/var/www/clients/client1/web/wp-content/wpsc-plugins’;

But it won’t budge until I put the plugin into the Wp SuperCache own plugin folder. The path is the full path and correct.

Any support would be appreciated!

Sasa,

thank you. Is there a programmatic way to check wether the plugin was loaded?

Best,
Elmar

Sasa,

it does not seem to fire. Do you have demo code where to place the plugin call in the functions.php? Just paste the do_action without hook or filter like this?

do_action( ‘wpsc_add_plugin’, ABSPATH . ‘wp-content/wpsc-plugins/aelia-wpsupercache-ac-plugin.php’ );

Best,
Elmar

Sasa, very helpful. I initialized with the init code in functions and can confirm that the plugin does not load. File and directory permissions are 755. Below is the plugin code. I checked for the Global in the last line – it is not set. No errors in log.

Plugin Code:

<?php
/**
 * Extends WP Super Cache to allow it to work correctly with Aelia Internationalisation
 * solutions.
 *
 * @author Aelia <support@aelia.co>
 */
class Aelia_Internationalisation_WPSuperCache {
	const VERSION = '1.0.1.160401';

	// @var Aelia_Internationalisation_SuperCache The class instance
	protected static $instance;

	// @var string The cache key that Super Cache should use to retrieve the cached content
	protected $cache_key;

	// @var array A list of the cookies that should be processed to build the cache key
	protected function expected_cookies() {
		return array(
			'aelia_cs_selected_currency',
			'aelia_customer_country',
			'aelia_customer_state',
			'aelia_billing_country',
			'aelia_tax_exempt',
		);
	}

	/**
	 * Returns the cache key to be used by WP Super Cache. The key takes into account
	 * elements such as the selected currency, customer's country, customer's
	 * State/county, and so on.
	 *
	 * @return string
	 */
	protected function get_cache_key() {
		$cache_key = '';
		foreach($this->expected_cookies() as $cookie_name) {
			if(!empty($_COOKIE[$cookie_name])) {
				$cache_key .= $_COOKIE[$cookie_name];
			}
		}
		return $cache_key;
	}

	/**
	 * Class constructor.
	 */
	public function __construct() {
		$this->cache_key = $this->get_cache_key();

		// If one or more cookies are set by the Aelia internationalisation plugins,
		// enable the callback that will set the cache key
		if(!empty($this->cache_key)) {
			add_cacheaction('wp_cache_key', array($this, 'wp_cache_key'), 10, 1);
		}
		else {
			// Debug
			//var_dump("NO COOKIES FOUND. ASSUMING FIRST TIME VISITOR AND DISABLING CACHE");
			if(!defined('DONOTCACHEPAGE')) {
				define('DONOTCACHEPAGE', true);
			}
		}
	}

	/**
	 * Initialises the plugin.
	 */
	public static function init() {
		self::$instance = new self();
	}

	/**
	 * Extends the standard cache key with one that includes additional arguments,
	 * such as customer's currency, country, state, etc.
	 *
	 * @param string $cache_key The original cache key passed by WP Super Cache.
	 * @return string The updated cache key.
	 */
	public function wp_cache_key($cache_key) {
		$cache_key .= (string)$this->cache_key;
		// Debug
		//var_dump("CACHE KEY FOR PAGE: {$cache_key}");
		return $cache_key;
	}
}

$GLOBALS['aelia-internationalisation-wpsupercache']

= Aelia_Internationalisation_WPSuperCache::init();