Set language

[Carlos]

I have some customized pages in Prestashop 1.6

One module writes on the left column, but this module does not kown the language of the page, so this  module only writes on the default language.

 

I have this code:

 

$controller=new ContentPageCutomized();
$controller->init();
$controller->setMedia();
$controller->initHeader();
$controller->displayHeader();
$controller->initContent();

 

 

 

I am looking for something like:

 

 $this->context->smarty->assign(array(
            'lang_iso' => 'fr',
            'lang_id' => '5',
            'language_code' => 'fr'
                        ));

 

to put inside inside displayHeader()

 

Any idea?