toutpratique/modules/categorieshome/categorieshome.php

<?php
if (!defined('_CAN_LOAD_FILES_'))
	exit;

class Categorieshome extends Module
{
	public function __construct()
	{
		$this->name = 'categorieshome';
		$this->tab = 'front_office_features';
		$this->version = '1.0';
		$this->author = 'Antadis';
		$this->need_instance = 0;

		$this->bootstrap = true;
		parent::__construct();

		$this->displayName = $this->l('Display category on Home');
		$this->description = $this->l('Display category on Home with counter');
		$this->secure_key = Tools::encrypt($this->name);
		$this->ps_versions_compliancy = array('min' => '1.6', 'max' => _PS_VERSION_);
	}

	public function install()
	{
		if (Shop::isFeatureActive())
			Shop::setContext(Shop::CONTEXT_ALL);

		if (!parent::install()
			|| !$this->createTables()
			|| !$this->registerHook('displayMenuBoutique')			
			|| !$this->registerHook('displayHome')			
		)
			return false;
	}

	public function createTables ()
	{
		return true;
	}

	public function hookdisplayHome($params)
	{
		$id_lang = Context::getContext()->language->id;
		$categories = $this->getCategories($id_lang);
		
		array_map(function($category) use ($id_lang){
			$category->nbProducts = $category->getProducts($id_lang, 1, 999999, null, null, true);
		}, $categories);

		$this->smarty->assign(array(
			'categories' 	=>		$categories,
		));
		
		return $this->display(__FILE__, 'category.tpl');
	}


	public function hookdisplayMenuBoutique($params)
	{
		$id_lang = Context::getContext()->language->id;
		$categories = $this->getCategories($id_lang);
		
		array_map(function($category) use ($id_lang){
			$category->nbProducts = $category->getProducts($id_lang, 1, 999999, null, null, true);
		}, $categories);

		$this->smarty->assign('categories', $categories);
		
		return $this->display(__FILE__, 'category_menu.tpl');
	}


	private function getCategories($id_lang) 
	{
		$collection = new Collection('Category', $id_lang);
		$collection->where('id_parent', '=', '2');
		$collection->where('active', '=', '1');
		return $collection->getResults();
	}

}