[*] MO: Add smarty cache on some modules

classes/Customer.php

@@ -598,9 +598,12 @@ class CustomerCore extends ObjectModel
 
 	public static function getGroupsStatic($id_customer)
 	{
-		if (!Group::isFeatureActive() || $id_customer == 0)
+		if (!Group::isFeatureActive())
 			return array(Configuration::get('PS_CUSTOMER_GROUP'));
 
+		if ($id_customer == 0)
+			self::$_customer_groups[$id_customer] = array((int)Configuration::get('PS_UNIDENTIFIED_GROUP'));
+
 		if (!isset(self::$_customer_groups[$id_customer]))
 		{
 			self::$_customer_groups[$id_customer] = array();

classes/Tools.php

@@ -1830,6 +1830,7 @@ exit;
 		self::$_caching = (int)$smarty->caching;
 		$smarty->force_compile = 0;
 		$smarty->caching = (int)$level;
+		$smarty->cache_lifetime = 31536000; // 1 Year
 	}
 
 	public static function restoreCacheSettings(Context $context = null)

classes/module/Module.php

@@ -1582,11 +1582,18 @@ abstract class ModuleCore
 	{
 		return Module::_isTemplateOverloadedStatic($this->name, $template);
 	}
+	
+	protected function getCacheId($name = null)
+	{
+		if ($name === null)
+			$name = $this->name;
+		return $name.'|'.(int)$this->context->shop->id.'_'.(int)Group::getCurrent()->id.'_'.(int)$this->context->language->id;
+	}
 
 	public function display($file, $template, $cacheId = null, $compileId = null)
 	{
 		if (($overloaded = Module::_isTemplateOverloadedStatic(basename($file, '.php'), $template)) === null)
-			$result = Tools::displayError('No template found for module').' '.basename($file, '.php');
+			return Tools::displayError('No template found for module').' '.basename($file, '.php');
 		else
 		{
 			$this->smarty->assign(array(
@@ -1594,16 +1601,22 @@ abstract class ModuleCore
 				'module_template_dir' =>	($overloaded ? _THEME_DIR_ : __PS_BASE_URI__).'modules/'.basename($file, '.php').'/'
 			));
 
+			if ($cacheId !== null)
+				Tools::enableCache();
+
 			$smarty_subtemplate = $this->context->smarty->createTemplate(
 				$this->getTemplatePath($template),
 				$cacheId,
 				$compileId,
 				$this->smarty
 			);
-
 			$result = $smarty_subtemplate->fetch();
+
+			if ($cacheId !== null)
+				Tools::restoreCacheSettings();
+
+			return $result;
 		}
-		return $result;
 	}
 
 	/**
@@ -1635,7 +1648,11 @@ abstract class ModuleCore
 	{
 		$context = Context::getContext();
 
-		return $context->smarty->isCached($this->getTemplatePath($template), $cacheId, $compileId);
+		Tools::enableCache();
+		$is_cached =  $context->smarty->isCached($this->getTemplatePath($template), $cacheId, $compileId);
+		Tools::restoreCacheSettings();
+
+		return $is_cached;
 	}
 
 	protected function _clearCache($template, $cache_id = null, $compile_id = null)