[SOLVED] [Override] Add a new hook to an existing module ?

[be_tnt]

Hello,

 

I am trying to add a new hook to an existing module but it does not work. My prestashop version is 1.5.3.

 

So far I have done the following:

1. Add the new hook in ps_hook:

   			INSERT INTO `ps_hook` (`name`, `title`, `description`)
   			VALUES ('displayToptop', 'Top top of the pages', 'Hooks before the top hook');
   

   
   

2. Add a new alias in ps_hook_alias for this new hook:

   			INSERT INTO `ps_hook_alias` (`alias`, `name`)
   			VALUES ('toptop', 'displayToptop');
   

   
   

3. Override the FrontController class:

   			class FrontController extends FrontControllerCore
   			{
   			  public function initContent()
   			  {
   			   parent::initContent();
   			   if ($this->context->getMobileDevice() == false)
   			   {
   				$this->context->smarty->assign('HOOK_TOPTOP', Hook::exec('displayToptop'));
   			   }
   			  }
   			}
   

   
   

4. Override (at least try) the existing module. Here it's the blockuserinfo module.:

   			if (!defined('_PS_VERSION_'))
   			exit;	
   		class BlockUserInfo extends Module
   			{	public function install()
   			{
   			  return (parent::install() AND $this->registerHook('toptop'));
   			}	
   		/**
   			* Returns module content for header
   			*
   			* @param array $params Parameters
   			* @return string Content
   			*/
   			public function hookToptop($params)
   			{
   			  if (!$this->active)
   			   return;	  $this->smarty->assign(array(
   			   'cart' => $this->context->cart,
   			   'cart_qties' => $this->context->cart->nbProducts(),
   			   'logged' => $this->context->customer->isLogged(),
   			   'customerName' => ($this->context->customer->logged ? $this->context->customer->firstname.' '.$this->context->customer->lastname : false),
   			   'firstName' => ($this->context->customer->logged ? $this->context->customer->firstname : false),
   			   'lastName' => ($this->context->customer->logged ? $this->context->customer->lastname : false),
   			   'order_process' => Configuration::get('PS_ORDER_PROCESS_TYPE') ? 'order-opc' : 'order'
   			  ));
   			  return $this->display(__FILE__, 'blockuserinfotop.tpl');
   			}	
   		}
   

   
   

The new view has been created too. I have uninstall and re-install the module but when I try to hook this module to the new hook, it says: it's not possible to hook this module to this hook (or something equivalent as my backend is in french).

 

Did I do something wrong? Is it possible to add new hook to existing module? Should I completely redevelopped a new module based on the existing one?

 

Thx in advance!

Edited January 28, 2013 by be_tnt (see edit history)

[Jeff Simons Decena]

you need to do this also:

 

public function hookToptop($params){

 return $this->hookTop($params);
}

 

so that it returns what the hook_top returns. If you want to have a different template to show your hook, you must do this:

 

public function hookToptop($params){

$this->hookTop($params);
return $this->display(__FILE__, 'my_blockuserinfo.tpl');

}

[be_tnt]

In fact I do not want to display the content of the hookTop.

 

The only way to add a new hook in an existing module is to create a new one based on the existing one and modify the module class. There is no way right now to override a module class.