I am attempting to override a module in Prestashop. I have successfully overridden the modules' templates but I cannot successfully overwrite the modules' controller.
Where should the new controller class file be placed?
I have tried the following locations but they dont add new behaviour (change anything):
~/overrides/modules/blockwishlist/controllers/front/mywishlist.php
~/themes/MY_THEME/modules/blockwishlist/controllers/front/mywishlist.php
According to my previous question I could do it by editing core classes (suggested kindly by u/Sergii P) but I am sure there is a standard way to do this that doesn't involve editing core classes?
For reference; here is the contents of mywishlist.php
:
<?php
if (!defined('_CAN_LOAD_FILES_'))
exit;
//class BlockWishListMyWishListModuleFrontController extends BlockWishListMyWishListModuleFrontControllerCore // extends ModuleFrontController
class BlockWishListMyWishListModuleFrontControllerOverride extends BlockWishListMyWishListModuleFrontController
{
public function __construct()
{
parent::__construct();
}
/**
* Assign wishlist template
*/
public function assign()
{
$errors = array();
....
$this->setTemplate('mywishlist.tpl');
}
}
EDIT: I have a possible workaround for not being able to override the ModuleFrontController
class. The objective is to add an 'Export to CSV' button to the My Wishlists page, when the button is clicked the server will generate a CSV file containing all products in that wishlist. Before I do all the work, can you provide advice on whether this is possible...
{hook h='displayExportToCsvColumn' mod='myCustomModule'}
BlockWishlist
( ~/themes/MY_THEME/modules/blockwishlist/controllers/front/mywishlist.php ) and then my hook will call my custom module. Is this possible? As far as I could work out, you can't override ModuleFrontController
at the moment (sorry to say). The clues lie within Dispatcher::dispatch()
:
case self::FC_MODULE :
$module_name = Validate::isModuleName(Tools::getValue('module')) ? Tools::getValue('module') : '';
$module = Module::getInstanceByName($module_name);
$controller_class = 'PageNotFoundController';
if (Validate::isLoadedObject($module) && $module->active) {
$controllers = Dispatcher::getControllers(_PS_MODULE_DIR_.$module_name.'/controllers/front/');
if (isset($controllers[strtolower($this->controller)])) {
include_once(_PS_MODULE_DIR_.$module_name.'/controllers/front/'.$this->controller.'.php');
$controller_class = $module_name.$this->controller.'ModuleFrontController';
}
}
$params_hook_action_dispatcher = array('controller_type' => self::FC_FRONT, 'controller_class' => $controller_class, 'is_module' => 1);
break;
It only checks the /modules/?/controllers/
directory. You can't override the ModuleFrontController
classes, but if you're smart enough, you can override Dispatcher
class and make it scan for overrides of ModuleFrontController
.
Usually there is a way to alter things you want with hooks, worst case scenario - inject javascript via hook and alter content.
Hey I've struggled with this issue aswell. I ended up spotting a solution on the prestashop forums : https://www.prestashop.com/forums/topic/480523-override-front-controller-of-modules/
The user Alex has created a override for the Dispatcher that will check for any module controller overrides.
The file does not seem to be available on the forum anymore you can however still find it here along with some explanations on how it works : http://nemops.com/overriding-modules-controllers-in-prestashop-1-6/#.XDR7HHX0muU
In case none of those work anymore here is the code :
<?php
if (!defined('_PS_VERSION_')) {
exit;
}
class Dispatcher extends DispatcherCore
{
public function dispatch()
{
$controller_class = '';
// Get current controller
$this->getController();
if (!$this->controller) {
$this->controller = $this->useDefaultController();
}
// Dispatch with right front controller
switch ($this->front_controller) {
// Dispatch front office controller
case self::FC_FRONT :
$controllers = Dispatcher::getControllers(
array(_PS_FRONT_CONTROLLER_DIR_, _PS_OVERRIDE_DIR_.'controllers/front/')
);
$controllers['index'] = 'IndexController';
if (isset($controllers['auth'])) {
$controllers['authentication'] = $controllers['auth'];
}
if (isset($controllers['compare'])) {
$controllers['productscomparison'] = $controllers['compare'];
}
if (isset($controllers['contact'])) {
$controllers['contactform'] = $controllers['contact'];
}
if (!isset($controllers[strtolower($this->controller)])) {
$this->controller = $this->controller_not_found;
}
$controller_class = $controllers[strtolower($this->controller)];
$params_hook_action_dispatcher = array(
'controller_type' => self::FC_FRONT,
'controller_class' => $controller_class,
'is_module' => 0,
);
break;
// Dispatch module controller for front office
case self::FC_MODULE :
$module_name = Validate::isModuleName(Tools::getValue('module')) ? Tools::getValue('module') : '';
$module = Module::getInstanceByName($module_name);
$controller_class = 'PageNotFoundController';
if (Validate::isLoadedObject($module) && $module->active) {
$controllers = Dispatcher::getControllers(_PS_MODULE_DIR_.$module_name.'/controllers/front/');
if (isset($controllers[strtolower($this->controller)])) {
include_once(_PS_MODULE_DIR_.$module_name.'/controllers/front/'.$this->controller.'.php');
if (file_exists(
_PS_OVERRIDE_DIR_.'modules/'.$module_name.'/controllers/front/'.$this->controller.'.php'
)) {
include_once(_PS_OVERRIDE_DIR_.'modules/'.$module_name.'/controllers/front/'.$this->controller.'.php');
$controller_class = $module_name.$this->controller.'ModuleFrontControllerOverride';
} else {
$controller_class = $module_name.$this->controller.'ModuleFrontController';
}
}
}
$params_hook_action_dispatcher = array(
'controller_type' => self::FC_FRONT,
'controller_class' => $controller_class,
'is_module' => 1,
);
break;
// Dispatch back office controller + module back office controller
case self::FC_ADMIN :
if ($this->use_default_controller && !Tools::getValue('token') && Validate::isLoadedObject(
Context::getContext()->employee
) && Context::getContext()->employee->isLoggedBack()) {
Tools::redirectAdmin(
'index.php?controller='.$this->controller.'&token='.Tools::getAdminTokenLite($this->controller)
);
}
$tab = Tab::getInstanceFromClassName($this->controller, Configuration::get('PS_LANG_DEFAULT'));
$retrocompatibility_admin_tab = null;
if ($tab->module) {
if (file_exists(_PS_MODULE_DIR_.$tab->module.'/'.$tab->class_name.'.php')) {
$retrocompatibility_admin_tab = _PS_MODULE_DIR_.$tab->module.'/'.$tab->class_name.'.php';
} else {
$controllers = Dispatcher::getControllers(_PS_MODULE_DIR_.$tab->module.'/controllers/admin/');
if (!isset($controllers[strtolower($this->controller)])) {
$this->controller = $this->controller_not_found;
$controller_class = 'AdminNotFoundController';
} else {
// Controllers in modules can be named AdminXXX.php or AdminXXXController.php
include_once(_PS_MODULE_DIR_.$tab->module.'/controllers/admin/'.$controllers[strtolower(
$this->controller
)].'.php');
$controller_class = $controllers[strtolower($this->controller)].(strpos(
$controllers[strtolower($this->controller)],
'Controller'
) ? '' : 'Controller');
}
}
$params_hook_action_dispatcher = array(
'controller_type' => self::FC_ADMIN,
'controller_class' => $controller_class,
'is_module' => 1,
);
} else {
$controllers = Dispatcher::getControllers(
array(
_PS_ADMIN_DIR_.'/tabs/',
_PS_ADMIN_CONTROLLER_DIR_,
_PS_OVERRIDE_DIR_.'controllers/admin/',
)
);
if (!isset($controllers[strtolower($this->controller)])) {
// If this is a parent tab, load the first child
if (Validate::isLoadedObject($tab) && $tab->id_parent == 0 && ($tabs = Tab::getTabs(
Context::getContext()->language->id,
$tab->id
)) && isset($tabs[0])) {
Tools::redirectAdmin(Context::getContext()->link->getAdminLink($tabs[0]['class_name']));
}
$this->controller = $this->controller_not_found;
}
$controller_class = $controllers[strtolower($this->controller)];
$params_hook_action_dispatcher = array(
'controller_type' => self::FC_ADMIN,
'controller_class' => $controller_class,
'is_module' => 0,
);
if (file_exists(_PS_ADMIN_DIR_.'/tabs/'.$controller_class.'.php')) {
$retrocompatibility_admin_tab = _PS_ADMIN_DIR_.'/tabs/'.$controller_class.'.php';
}
}
// @retrocompatibility with admin/tabs/ old system
if ($retrocompatibility_admin_tab) {
include_once($retrocompatibility_admin_tab);
include_once(_PS_ADMIN_DIR_.'/functions.php');
runAdminTab($this->controller, !empty($_REQUEST['ajaxMode']));
return;
}
break;
default :
throw new PrestaShopException('Bad front controller chosen');
}
// Instantiate controller
try {
// Loading controller
$controller = Controller::getController($controller_class);
// Execute hook dispatcher
if (isset($params_hook_action_dispatcher)) {
Hook::exec('actionDispatcher', $params_hook_action_dispatcher);
}
// Running controller
$controller->run();
} catch (PrestaShopException $e) {
$e->displayMessage();
}
}
}
After this it is possible to override module controllers by putting the override file in :
override/modules/{moduleName}/controllers/{front/admin}/{filename}.php
In this file you have to define a class with the exact same name as the class you want to override and append "Override" at the end of the classname.
I hope this helps
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