Add to product-list the supplier

komodityagro · October 1, 2013

How can I add to product-list.tpl the supplier - name, adress, phone...?

vekia · October 1, 2013

you have to modify getSuppliers function in classes/Supplier.php

you have to add additional left join function (address table) based on id_supplier field

in addition to this, also modify select function to get fields from address table,

then modify the supplier-list.tpl file to display these variables

komodityagro · October 1, 2013

Can you explain to me exactly what and where I have to modify?

vekia · October 1, 2013

open: classes/Supplier.php

instead of

$query->leftJoin('address', 'addr', 's.`id_supplier` = addr.`id_supplier`');

use:

 $query->select('s.*, sl.*, addr.*');

and add additional line:

$query->leftJoin('address', 'addr', 's.`id_supplier` = addr.`id_supplier`');

komodityagro · October 2, 2013

But in classes/Supplier.php function getSuppliers is only

$query->leftJoin('supplier_lang', 'sl', 's.`id_supplier` = sl.`id_supplier` AND sl.`id_lang` = '.(int)$id_lang);

public static function getSuppliers($get_nb_products = false, $id_lang = 0, $active = true, $p = false, $n = false, $all_groups = false)
	{
		if (!$id_lang)
			$id_lang = Configuration::get('PS_LANG_DEFAULT');

		$query = new DbQuery();
		$query->select('s.*, sl.`description`');
		$query->from('supplier', 's');
		$query->leftJoin('supplier_lang', 'sl', 's.`id_supplier` = sl.`id_supplier` AND sl.`id_lang` = '.(int)$id_lang);
		$query->join(Shop::addSqlAssociation('supplier', 's'));
		if ($active)
			$query->where('s.`active` = 1');
		$query->orderBy(' s.`name` ASC');
		$query->limit($n, ($p - 1) * $n);
		$query->groupBy('s.id_supplier');

		$suppliers = Db::getInstance(_PS_USE_SQL_SLAVE_)->executeS($query);
		if ($suppliers === false)
			return false;
		if ($get_nb_products)
		{
			$sql_groups = '';
			if (!$all_groups)
			{
				$groups = FrontController::getCurrentCustomerGroups();
				$sql_groups = (count($groups) ? 'IN ('.implode(',', $groups).')' : '= 1');
			}
			foreach ($suppliers as $key => $supplier)
			{
				$sql = '
					SELECT DISTINCT(ps.`id_product`)
					FROM `'._DB_PREFIX_.'product_supplier` ps
					JOIN `'._DB_PREFIX_.'product` p ON (ps.`id_product`= p.`id_product`)
					'.Shop::addSqlAssociation('product', 'p').'
					WHERE ps.`id_supplier` = '.(int)$supplier['id_supplier'].'
					AND ps.id_product_attribute = 0'.
					($active ? ' AND product_shop.`active` = 1' : '').
					($all_groups ? '' :'
					AND ps.`id_product` IN (
						SELECT cp.`id_product`
						FROM `'._DB_PREFIX_.'category_group` cg
						LEFT JOIN `'._DB_PREFIX_.'category_product` cp ON (cp.`id_category` = cg.`id_category`)
						WHERE cg.`id_group` '.$sql_groups.'
					)');
				$result = Db::getInstance(_PS_USE_SQL_SLAVE_)->executeS($sql);
				$suppliers[$key]['nb_products'] = count($result);
			}
		}

		$nb_suppliers = count($suppliers);
		$rewrite_settings = (int)Configuration::get('PS_REWRITING_SETTINGS');
		for ($i = 0; $i < $nb_suppliers; $i++)
			if ($rewrite_settings)
				$suppliers[$i]['link_rewrite'] = Tools::link_rewrite($suppliers[$i]['name'], false);
			else
				$suppliers[$i]['link_rewrite'] = 0;
		return $suppliers;
	}

vekia · October 2, 2013

hello

it's probably little missunderstanding here, my bad.

you said that you want to display supplier info in product list page, you mean, while you browsing categories in your store?

komodityagro · October 2, 2013

Sorry, my english is not so good.

You understood well. I want to display in product list the supplier variables - {$supplier->name} {$supplier->city}

vekia · October 2, 2013

so you have to extend query in classes/Category.php file, there is a function getProducts():

to the sql query there you need to add queries to LEFT JOIN ps_supplier (based on id_supplier) and LEF JOIN ps_address (based on id_supplier)

in addition, you will have to extend also SELECT param, define there that you want also ps_supplier & ps_address variables

now i haven't got an access to this file temporarily,

if you've got questions - feel free to write

komodityagro · October 2, 2013

Thanks, but I need explain exactly what and where I have to modify.

Here is file classes/Category.php

<?php
/*
* 2007-2013 PrestaShop
*
* NOTICE OF LICENSE
*
* This source file is subject to the Open Software License (OSL 3.0)
* that is bundled with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://opensource.org/licenses/osl-3.0.php
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to [email protected] so we can send you a copy immediately.
*
* DISCLAIMER
*
* Do not edit or add to this file if you wish to upgrade PrestaShop to newer
* versions in the future. If you wish to customize PrestaShop for your
* needs please refer to http://www.prestashop.com for more information.
*
*  @author PrestaShop SA <[email protected]>
*  @copyright  2007-2013 PrestaShop SA
*  @license    http://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
*  International Registered Trademark & Property of PrestaShop SA
*/

class CategoryCore extends ObjectModel
{
	public $id;

	/** @var integer category ID */
	public $id_category;

	/** @var string Name */
	public $name;

	/** @var boolean Status for display */
	public $active = 1;

	/** @var  integer category position */
	public $position;

	/** @var string Description */
	public $description;

	/** @var integer Parent category ID */
	public $id_parent;

	/** @var integer default Category id */
	public $id_category_default;

	/** @var integer Parents number */
	public $level_depth;

	/** @var integer Nested tree model "left" value */
	public $nleft;

	/** @var integer Nested tree model "right" value */
	public $nright;

	/** @var string string used in rewrited URL */
	public $link_rewrite;

	/** @var string Meta title */
	public $meta_title;

	/** @var string Meta keywords */
	public $meta_keywords;

	/** @var string Meta description */
	public $meta_description;

	/** @var string Object creation date */
	public $date_add;

	/** @var string Object last modification date */
	public $date_upd;

	/** @var boolean is Category Root */
	public $is_root_category;

	/** @var integer */
	public $id_shop_default;

	public $groupBox;

	protected static $_links = array();

	/**
	 * @see ObjectModel::$definition
	 */
	public static $definition = array(
		'table' => 'category',
		'primary' => 'id_category',
		'multilang' => true,
		'multilang_shop' => true,
		'fields' => array(
			'nleft' => 				array('type' => self::TYPE_INT, 'validate' => 'isUnsignedInt'),
			'nright' => 			array('type' => self::TYPE_INT, 'validate' => 'isUnsignedInt'),
			'level_depth' => 		array('type' => self::TYPE_INT, 'validate' => 'isUnsignedInt'),
			'active' => 			array('type' => self::TYPE_BOOL, 'validate' => 'isBool', 'required' => true),
			'id_parent' => 			array('type' => self::TYPE_INT, 'validate' => 'isUnsignedInt'),
			'id_shop_default' => 	array('type' => self::TYPE_INT, 'validate' => 'isUnsignedId'),
			'is_root_category' => 	array('type' => self::TYPE_BOOL, 'validate' => 'isBool'),
			'position' => 			array('type' => self::TYPE_INT),
			'date_add' => 			array('type' => self::TYPE_DATE, 'validate' => 'isDate'),
			'date_upd' => 			array('type' => self::TYPE_DATE, 'validate' => 'isDate'),

			// Lang fields
			'name' => 				array('type' => self::TYPE_STRING, 'lang' => true, 'validate' => 'isCatalogName', 'required' => true, 'size' => 64),
			'link_rewrite' => 		array('type' => self::TYPE_STRING, 'lang' => true, 'validate' => 'isLinkRewrite', 'required' => true, 'size' => 64),
			'description' => 		array('type' => self::TYPE_HTML, 'lang' => true, 'validate' => 'isCleanHtml'),
			'meta_title' => 		array('type' => self::TYPE_STRING, 'lang' => true, 'validate' => 'isGenericName', 'size' => 128),
			'meta_description' => 	array('type' => self::TYPE_STRING, 'lang' => true, 'validate' => 'isGenericName', 'size' => 255),
			'meta_keywords' => 		array('type' => self::TYPE_STRING, 'lang' => true, 'validate' => 'isGenericName', 'size' => 255),
		),
	);

	/** @var string id_image is the category ID when an image exists and 'default' otherwise */
	public $id_image = 'default';

	protected $webserviceParameters = array(
		'objectsNodeName' => 'categories',
		'hidden_fields' => array('nleft', 'nright', 'groupBox'),
		'fields' => array(
			'id_parent' => array('xlink_resource'=> 'categories'),
			'level_depth' => array('setter' => false),
			'nb_products_recursive' => array('getter' => 'getWsNbProductsRecursive', 'setter' => false),
		),
		'associations' => array(
			'categories' => array('getter' => 'getChildrenWs', 'resource' => 'category', ),
			'products' => array('getter' => 'getProductsWs', 'resource' => 'product', ),
		),
	);

	public function __construct($id_category = null, $id_lang = null, $id_shop = null)
	{
		parent::__construct($id_category, $id_lang, $id_shop);
		$this->id_image = ($this->id && file_exists(_PS_CAT_IMG_DIR_.(int)$this->id.'.jpg')) ? (int)$this->id : false;
		$this->image_dir = _PS_CAT_IMG_DIR_;
	}

	/**
	  * Allows to display the category description without HTML tags and slashes
	  *
	  * @return string
	  */
	public static function getDescriptionClean($description)
	{
		return strip_tags(stripslashes($description));
	}

	public function add($autodate = true, $null_values = false)
	{
		if (!isset($this->level_depth))
			$this->level_depth = $this->calcLevelDepth();
		$ret = parent::add($autodate, $null_values);
		if (Tools::isSubmit('checkBoxShopAsso_category'))
			foreach (Tools::getValue('checkBoxShopAsso_category') as $id_shop => $value)
			{
				$position = Category::getLastPosition((int)$this->id_parent, $id_shop);
				$this->addPosition($position, $id_shop);
			}
		else
			foreach (Shop::getShops(true) as $shop)
			{
				$position = Category::getLastPosition((int)$this->id_parent, $shop['id_shop']);
				if (!$position)
					$position = 1;
				$this->addPosition($position, $shop['id_shop']);
			}
		if (!isset($this->doNotRegenerateNTree) || !$this->doNotRegenerateNTree)
			Category::regenerateEntireNtree();
		$this->updateGroup($this->groupBox);
		Hook::exec('actionCategoryAdd', array('category' => $this));
		return $ret;
	}

	/**
	 * update category positions in parent
	 *
	 * @param mixed $null_values
	 * @return void
	 */
	public function update($null_values = false)
	{
		if ($this->id_parent == $this->id)
			throw new PrestaShopException('a category cannot be it\'s own parent');
		// Update group selection
		$this->updateGroup($this->groupBox);
		$this->level_depth = $this->calcLevelDepth();
		// If the parent category was changed, we don't want to have 2 categories with the same position
		if ($this->getDuplicatePosition())
		{
			$assos = array();
			if (Tools::isSubmit('checkBoxShopAsso_category'))
			{
				$check_box = Tools::getValue('checkBoxShopAsso_category');
				foreach ($check_box as $id_asso_object => $row)
				{
					foreach ($row as $id_shop => $value)
						$assos[] = array('id_object' => (int)$id_asso_object, 'id_shop' => (int)$id_shop);
				}
			}
			foreach ($assos as $shop)
				$this->addPosition(Category::getLastPosition((int)$this->id_parent, $shop['id_shop']), $shop['id_shop']);
		}
		$this->cleanPositions((int)$this->id_parent);
		$ret = parent::update($null_values);
		if (!isset($this->doNotRegenerateNTree) || !$this->doNotRegenerateNTree)
		{
			Category::regenerateEntireNtree();
			$this->recalculateLevelDepth($this->id);
		}
		Hook::exec('actionCategoryUpdate', array('category' => $this));
		return $ret;
	}

	/**
	 * @see ObjectModel::toggleStatus()
	 */
	public function toggleStatus()
	{
		$result = parent::toggleStatus();
		Hook::exec('actionCategoryUpdate');
		return $result;
	}

	/**
	 * Recursive scan of subcategories
	 *
	 * @param integer $max_depth Maximum depth of the tree (i.e. 2 => 3 levels depth)
	 * @param integer $current_depth specify the current depth in the tree (don't use it, only for rucursivity!)
	 * @param integer $id_lang Specify the id of the language used
	 * @param array $excluded_ids_array specify a list of ids to exclude of results
	 *
	 * @return array Subcategories lite tree
	 */
	public function recurseLiteCategTree($max_depth = 3, $current_depth = 0, $id_lang = null, $excluded_ids_array = null)
	{
		$id_lang = is_null($id_lang) ? Context::getContext()->language->id : (int)$id_lang;

		$children = array();
		$subcats = $this->getSubCategories($id_lang, true);
		if (($max_depth == 0 || $current_depth < $max_depth) && $subcats && count($subcats))
			foreach ($subcats as &$subcat)
			{
				if (!$subcat['id_category'])
					break;
				else if (!is_array($excluded_ids_array) || !in_array($subcat['id_category'], $excluded_ids_array))
				{
					$categ = new Category($subcat['id_category'], $id_lang);
					$children[] = $categ->recurseLiteCategTree($max_depth, $current_depth + 1, $id_lang, $excluded_ids_array);
				}
			}
		
		if (is_array($this->description))
			foreach ($this->description as $lang => $description)
				$this->description[$lang] = Category::getDescriptionClean($description);
		else
			$this->description = Category::getDescriptionClean($this->description);
			
		return array(
			'id' => (int)$this->id,
			'link' => Context::getContext()->link->getCategoryLink($this->id, $this->link_rewrite),
			'name' => $this->name,
			'desc'=> $this->description,
			'children' => $children
		);
	}

	public static function recurseCategory($categories, $current, $id_category = 1, $id_selected = 1)
	{
		echo '<option value="'.$id_category.'"'.(($id_selected == $id_category) ? ' selected="selected"' : '').'>'.
		str_repeat(' ', $current['infos']['level_depth'] * 5).stripslashes($current['infos']['name']).'</option>';
		if (isset($categories[$id_category]))
			foreach (array_keys($categories[$id_category]) as $key)
				Category::recurseCategory($categories, $categories[$id_category][$key], $key, $id_selected);
	}


	/**
	 * Recursively add specified category childs to $to_delete array
	 *
	 * @param array &$to_delete Array reference where categories ID will be saved
	 * @param array $id_category Parent category ID
	 */
	protected function recursiveDelete(&$to_delete, $id_category)
	{
		if (!is_array($to_delete) || !$id_category)
			die(Tools::displayError());

		$result = Db::getInstance()->executeS('
		SELECT `id_category`
		FROM `'._DB_PREFIX_.'category`
		WHERE `id_parent` = '.(int)$id_category);
		foreach ($result as $row)
		{
			$to_delete[] = (int)$row['id_category'];
			$this->recursiveDelete($to_delete, (int)$row['id_category']);
		}
	}

	public function deleteLite()
	{
		// Directly call the parent of delete, in order to avoid recursion
		return parent::delete();
	}

	public function delete()
	{
		if ((int)$this->id === 0 || (int)$this->id === 1)
			return false;

		$this->clearCache();

		$all_cat = $this->getAllChildren();
		$all_cat[] = $this;
		foreach ($all_cat as $cat)
		{
			$cat->deleteLite();
			if (!$this->hasMultishopEntries())
			{
				$cat->deleteImage();
				$cat->cleanGroups();
				$cat->cleanAssoProducts();
				// Delete associated restrictions on cart rules
				CartRule::cleanProductRuleIntegrity('categories', array($cat->id));
				Category::cleanPositions($cat->id_parent);
				/* Delete Categories in GroupReduction */
				if (GroupReduction::getGroupsReductionByCategoryId((int)$cat->id))
					GroupReduction::deleteCategory($cat->id);
			}
		}
		
		/* Rebuild the nested tree */
		if (!$this->hasMultishopEntries() && (!isset($this->doNotRegenerateNTree) || !$this->doNotRegenerateNTree))
			Category::regenerateEntireNtree();

		Hook::exec('actionCategoryDelete', array('category' => $this));
			
		return true;
	}

	/**
	 * Delete several categories from database
	 *
	 * return boolean Deletion result
	 */
	public function deleteSelection($categories)
	{
		$return = 1;
		foreach ($categories as $id_category)
		{
			$category = new Category($id_category);
			if ($category->isRootCategoryForAShop())
				return false;
			else
				$return &= $category->delete();
		}
		return $return;
	}

	/**
	  * Get the depth level for the category
	  *
	  * @return integer Depth level
	  */
	public function calcLevelDepth()
	{
		/* Root category */
		if (!$this->id_parent)
			return 0;

		$parent_category = new Category((int)$this->id_parent);
		if (!Validate::isLoadedObject($parent_category))
			throw new PrestaShopException('Parent category does not exist');
		return $parent_category->level_depth + 1;
	}

	/**
	  * Re-calculate the values of all branches of the nested tree
	  */
	public static function regenerateEntireNtree()
	{
		$id = Context::getContext()->shop->id;
		$id_shop = $id ? $id: Configuration::get('PS_SHOP_DEFAULT');
		$categories = Db::getInstance()->executeS('
		SELECT c.`id_category`, c.`id_parent`
		FROM `'._DB_PREFIX_.'category` c
		LEFT JOIN `'._DB_PREFIX_.'category_shop` cs
			ON (c.`id_category` = cs.`id_category` AND cs.`id_shop` = '.(int)$id_shop.')
		ORDER BY c.`id_parent`, cs.`position` ASC');
		$categories_array = array();
		foreach ($categories as $category)
			$categories_array[$category['id_parent']]['subcategories'][] = $category['id_category'];
		$n = 1;

		if (isset($categories_array[0]) && $categories_array[0]['subcategories'])
			Category::_subTree($categories_array, $categories_array[0]['subcategories'][0], $n);
	}

	protected static function _subTree(&$categories, $id_category, &$n)
	{
		$left = $n++;
		if (isset($categories[(int)$id_category]['subcategories']))
			foreach ($categories[(int)$id_category]['subcategories'] as $id_subcategory)
				Category::_subTree($categories, (int)$id_subcategory, $n);
		$right = (int)$n++;

		Db::getInstance()->execute('
			UPDATE '._DB_PREFIX_.'category
			SET nleft = '.(int)$left.', nright = '.(int)$right.'
			WHERE id_category = '.(int)$id_category.' LIMIT 1
		');
	}

	/**
	  * Updates level_depth for all children of the given id_category
	  *
	  * @param integer $id_category parent category
	  */
	public function recalculateLevelDepth($id_category)
	{
		if (!is_numeric($id_category))
			throw new PrestaShopException('id category is not numeric');
		/* Gets all children */
		$categories = Db::getInstance(_PS_USE_SQL_SLAVE_)->executeS('
			SELECT id_category, id_parent, level_depth
			FROM '._DB_PREFIX_.'category
			WHERE id_parent = '.(int)$id_category);
		/* Gets level_depth */
		$level = Db::getInstance(_PS_USE_SQL_SLAVE_)->getRow('
			SELECT level_depth
			FROM '._DB_PREFIX_.'category
			WHERE id_category = '.(int)$id_category);
		/* Updates level_depth for all children */
		foreach ($categories as $sub_category)
		{
			Db::getInstance()->execute('
				UPDATE '._DB_PREFIX_.'category
				SET level_depth = '.(int)($level['level_depth'] + 1).'
				WHERE id_category = '.(int)$sub_category['id_category']);
			/* Recursive call */
			$this->recalculateLevelDepth($sub_category['id_category']);
		}
	}

	/**
	  * Return available categories
	  *
	  * @param integer $id_lang Language ID
	  * @param boolean $active return only active categories
	  * @return array Categories
	  */
	public static function getCategories($id_lang = false, $active = true, $order = true, $sql_filter = '', $sql_sort = '', $sql_limit = '')
	{
	 	if (!Validate::isBool($active))
	 		die(Tools::displayError());
		$result = Db::getInstance(_PS_USE_SQL_SLAVE_)->executeS('
			SELECT *
			FROM `'._DB_PREFIX_.'category` c
			'.Shop::addSqlAssociation('category', 'c').'
			LEFT JOIN `'._DB_PREFIX_.'category_lang` cl ON c.`id_category` = cl.`id_category`'.Shop::addSqlRestrictionOnLang('cl').'
			WHERE 1 '.$sql_filter.' '.($id_lang ? 'AND `id_lang` = '.(int)$id_lang : '').'
			'.($active ? 'AND `active` = 1' : '').'
			'.(!$id_lang ? 'GROUP BY c.id_category' : '').'
			'.($sql_sort != '' ? $sql_sort : 'ORDER BY c.`level_depth` ASC, category_shop.`position` ASC').'
			'.($sql_limit != '' ? $sql_limit : '')
		);

		if (!$order)
			return $result;

		$categories = array();
		foreach ($result as $row)
			$categories[$row['id_parent']][$row['id_category']]['infos'] = $row;

		return $categories;
	}

	public static function getSimpleCategories($id_lang)
	{
		return Db::getInstance(_PS_USE_SQL_SLAVE_)->executeS('
		SELECT c.`id_category`, cl.`name`
		FROM `'._DB_PREFIX_.'category` c
		LEFT JOIN `'._DB_PREFIX_.'category_lang` cl ON (c.`id_category` = cl.`id_category`'.Shop::addSqlRestrictionOnLang('cl').')
		'.Shop::addSqlAssociation('category', 'c').'
		WHERE cl.`id_lang` = '.(int)$id_lang.'
		AND c.`id_category` != '.Configuration::get('PS_ROOT_CATEGORY').'
		GROUP BY c.id_category
		ORDER BY c.`id_category`, category_shop.`position`');
	}

	public function getShopID()
	{
		return $this->id_shop;
	}

	/**
	  * Return current category childs
	  *
	  * @param integer $id_lang Language ID
	  * @param boolean $active return only active categories
	  * @return array Categories
	  */
	public function getSubCategories($id_lang, $active = true)
	{
	 	if (!Validate::isBool($active))
	 		die(Tools::displayError());

		$groups = FrontController::getCurrentCustomerGroups();
		$sql_groups = (count($groups) ? 'IN ('.implode(',', $groups).')' : '='.(int)Group::getCurrent()->id);

		$result = Db::getInstance(_PS_USE_SQL_SLAVE_)->executeS('
			SELECT c.*, cl.id_lang, cl.name, cl.description, cl.link_rewrite, cl.meta_title, cl.meta_keywords, cl.meta_description
			FROM `'._DB_PREFIX_.'category` c
			'.Shop::addSqlAssociation('category', 'c').'
			LEFT JOIN `'._DB_PREFIX_.'category_lang` cl
				ON (c.`id_category` = cl.`id_category`
				AND `id_lang` = '.(int)$id_lang.Shop::addSqlRestrictionOnLang('cl').')
			LEFT JOIN `'._DB_PREFIX_.'category_group` cg
				ON (cg.`id_category` = c.`id_category`)
			WHERE `id_parent` = '.(int)$this->id.'
				'.($active ? 'AND `active` = 1' : '').'
				AND cg.`id_group` '.$sql_groups.'
			GROUP BY c.`id_category`
			ORDER BY `level_depth` ASC, category_shop.`position` ASC
		');

		foreach ($result as &$row)
		{
			$row['id_image'] = file_exists(_PS_CAT_IMG_DIR_.$row['id_category'].'.jpg') ? (int)$row['id_category'] : Language::getIsoById($id_lang).'-default';
			$row['legend'] = 'no picture';
		}
		return $result;
	}

	/**
	  * Return current category products
	  *
	  * @param integer $id_lang Language ID
	  * @param integer $p Page number
	  * @param integer $n Number of products per page
	  * @param boolean $get_total return the number of results instead of the results themself
	  * @param boolean $active return only active products
	  * @param boolean $random active a random filter for returned products
	  * @param int $random_number_products number of products to return if random is activated
	  * @param boolean $check_access set to false to return all products (even if customer hasn't access)
	  * @return mixed Products or number of products
	  */
	public function getProducts($id_lang, $p, $n, $order_by = null, $order_way = null, $get_total = false, $active = true, $random = false, $random_number_products = 1, $check_access = true, Context $context = null)
	{
		if (!$context)
			$context = Context::getContext();
		if ($check_access && !$this->checkAccess($context->customer->id))
			return false;
		
		$front = true;
		if (!in_array($context->controller->controller_type, array('front', 'modulefront')))
			$front = false;
			
		if ($p < 1) $p = 1;

		if (empty($order_by))
			$order_by = 'position';
		else
			/* Fix for all modules which are now using lowercase values for 'orderBy' parameter */
			$order_by = strtolower($order_by);

		if (empty($order_way))
			$order_way = 'ASC';
		if ($order_by == 'id_product' || $order_by == 'date_add' || $order_by == 'date_upd')
			$order_by_prefix = 'p';
		elseif ($order_by == 'name')
			$order_by_prefix = 'pl';
		elseif ($order_by == 'manufacturer')
		{
			$order_by_prefix = 'm';
			$order_by = 'name';
		}
		elseif ($order_by == 'position')
			$order_by_prefix = 'cp';

		if ($order_by == 'price')
			$order_by = 'orderprice';

		if (!Validate::isBool($active) || !Validate::isOrderBy($order_by) || !Validate::isOrderWay($order_way))
			die (Tools::displayError());

		$id_supplier = (int)Tools::getValue('id_supplier');

		/* Return only the number of products */
		if ($get_total)
		{
			$sql = 'SELECT COUNT(cp.`id_product`) AS total
					FROM `'._DB_PREFIX_.'product` p
					'.Shop::addSqlAssociation('product', 'p').'
					LEFT JOIN `'._DB_PREFIX_.'category_product` cp ON p.`id_product` = cp.`id_product`
					WHERE cp.`id_category` = '.(int)$this->id.
					($front ? ' AND product_shop.`visibility` IN ("both", "catalog")' : '').
					($active ? ' AND product_shop.`active` = 1' : '').
					($id_supplier ? 'AND p.id_supplier = '.(int)$id_supplier : '');
			return (int)Db::getInstance(_PS_USE_SQL_SLAVE_)->getValue($sql);
		}

		$sql = 'SELECT p.*, product_shop.*, stock.out_of_stock, IFNULL(stock.quantity, 0) as quantity, MAX(product_attribute_shop.id_product_attribute) id_product_attribute, product_attribute_shop.minimal_quantity AS product_attribute_minimal_quantity, pl.`description`, pl.`description_short`, pl.`available_now`,
					pl.`available_later`, pl.`link_rewrite`, pl.`meta_description`, pl.`meta_keywords`, pl.`meta_title`, pl.`name`, MAX(image_shop.`id_image`) id_image,
					il.`legend`, m.`name` AS manufacturer_name, cl.`name` AS category_default,
					DATEDIFF(product_shop.`date_add`, DATE_SUB(NOW(),
					INTERVAL '.(Validate::isUnsignedInt(Configuration::get('PS_NB_DAYS_NEW_PRODUCT')) ? Configuration::get('PS_NB_DAYS_NEW_PRODUCT') : 20).'
						DAY)) > 0 AS new, product_shop.price AS orderprice
				FROM `'._DB_PREFIX_.'category_product` cp
				LEFT JOIN `'._DB_PREFIX_.'product` p
					ON p.`id_product` = cp.`id_product`
				'.Shop::addSqlAssociation('product', 'p').'
				LEFT JOIN `'._DB_PREFIX_.'product_attribute` pa
				ON (p.`id_product` = pa.`id_product`)
				'.Shop::addSqlAssociation('product_attribute', 'pa', false, 'product_attribute_shop.`default_on` = 1').'
				'.Product::sqlStock('p', 'product_attribute_shop', false, $context->shop).'
				LEFT JOIN `'._DB_PREFIX_.'category_lang` cl
					ON (product_shop.`id_category_default` = cl.`id_category`
					AND cl.`id_lang` = '.(int)$id_lang.Shop::addSqlRestrictionOnLang('cl').')
				LEFT JOIN `'._DB_PREFIX_.'product_lang` pl
					ON (p.`id_product` = pl.`id_product`
					AND pl.`id_lang` = '.(int)$id_lang.Shop::addSqlRestrictionOnLang('pl').')
				LEFT JOIN `'._DB_PREFIX_.'image` i
					ON (i.`id_product` = p.`id_product`)'.
				Shop::addSqlAssociation('image', 'i', false, 'image_shop.cover=1').'
				LEFT JOIN `'._DB_PREFIX_.'image_lang` il
					ON (image_shop.`id_image` = il.`id_image`
					AND il.`id_lang` = '.(int)$id_lang.')
				LEFT JOIN `'._DB_PREFIX_.'manufacturer` m
					ON m.`id_manufacturer` = p.`id_manufacturer`
				WHERE product_shop.`id_shop` = '.(int)$context->shop->id.'
					AND cp.`id_category` = '.(int)$this->id
					.($active ? ' AND product_shop.`active` = 1' : '')
					.($front ? ' AND product_shop.`visibility` IN ("both", "catalog")' : '')
					.($id_supplier ? ' AND p.id_supplier = '.(int)$id_supplier : '')
					.' GROUP BY product_shop.id_product';

		if ($random === true)
		{
			$sql .= ' ORDER BY RAND()';
			$sql .= ' LIMIT 0, '.(int)$random_number_products;
		}
		else
			$sql .= ' ORDER BY '.(isset($order_by_prefix) ? $order_by_prefix.'.' : '').'`'.pSQL($order_by).'` '.pSQL($order_way).'
			LIMIT '.(((int)$p - 1) * (int)$n).','.(int)$n;

		$result = Db::getInstance(_PS_USE_SQL_SLAVE_)->executeS($sql);
		if ($order_by == 'orderprice')
			Tools::orderbyPrice($result, $order_way);

		if (!$result)
			return array();

		/* Modify SQL result */
		return Product::getProductsProperties($id_lang, $result);
	}

	/**
	  * Return main categories
	  *
	  * @param integer $id_lang Language ID
	  * @param boolean $active return only active categories
	  * @return array categories
	  */
	public static function getHomeCategories($id_lang, $active = true)
	{
		return self::getChildren(Configuration::get('PS_HOME_CATEGORY'), $id_lang, $active);
	}

	public static function getRootCategory($id_lang = null, Shop $shop = null)
	{
		$context = Context::getContext();
		if (is_null($id_lang))
			$id_lang = $context->language->id;
		if (!$shop)
			if (Shop::isFeatureActive() && Shop::getContext() != Shop::CONTEXT_SHOP)
				$shop = new Shop(Configuration::get('PS_SHOP_DEFAULT'));
			else
				$shop = $context->shop;
		else
			return new Category($shop->getCategory(), $id_lang);
		$is_more_than_one_root_category = count(Category::getCategoriesWithoutParent()) > 1;
		if (Shop::isFeatureActive() && $is_more_than_one_root_category && Shop::getContext() != Shop::CONTEXT_SHOP)
			$category = Category::getTopCategory($id_lang);
		else
			$category = new Category($shop->getCategory(), $id_lang);

		return $category;
	}

	/**
	 *
	 * @param int $id_parent
	 * @param int $id_lang
	 * @param bool $active
	 * @return array
	 */
	public static function getChildren($id_parent, $id_lang, $active = true, $id_shop = false)
	{
		if (!Validate::isBool($active))
			die(Tools::displayError());

		$query = 'SELECT c.`id_category`, cl.`name`, cl.`link_rewrite`, category_shop.`id_shop`
		FROM `'._DB_PREFIX_.'category` c
		LEFT JOIN `'._DB_PREFIX_.'category_lang` cl ON (c.`id_category` = cl.`id_category`'.Shop::addSqlRestrictionOnLang('cl').')
		'.Shop::addSqlAssociation('category', 'c').'
		WHERE `id_lang` = '.(int)$id_lang.'
		AND c.`id_parent` = '.(int)$id_parent.'
		'.($active ? 'AND `active` = 1' : '').'
		GROUP BY c.`id_category`
		ORDER BY category_shop.`position` ASC';
		return Db::getInstance(_PS_USE_SQL_SLAVE_)->executeS($query);
	}

	/**
	 * Return an array of all children of the current category
	 *
	 * @param int $id_lang
	 * @return Collection
	 */
	public function getAllChildren($id_lang = null)
	{
		if (is_null($id_lang))
			$id_lang = Context::getContext()->language->id;

		$categories = new Collection('Category', $id_lang);
		$categories->where('nleft', '>', $this->nleft);
		$categories->where('nright', '<', $this->nright);
		return $categories;
	}

	/**
	 * This method allow to return children categories with the number of sub children selected for a product
	 *
	 * @param int $id_parent
	 * @param int $id_product
	 * @param int $id_lang
	 * @return array
	 */
	public static function getChildrenWithNbSelectedSubCat($id_parent, $selected_cat, $id_lang, Shop $shop = null, $use_shop_context = true)
	{
		if (!$shop)
			$shop = Context::getContext()->shop;

		$id_shop = $shop->id ? $shop->id : Configuration::get('PS_SHOP_DEFAULT');
		$selected_cat = explode(',', str_replace(' ', '', $selected_cat));
		$sql = 'SELECT c.`id_category`, c.`level_depth`, cl.`name`, IF((
						SELECT COUNT(*)
						FROM `'._DB_PREFIX_.'category` c2
						WHERE c2.`id_parent` = c.`id_category`
					) > 0, 1, 0) AS has_children, '.($selected_cat ? '(
						SELECT count(c3.`id_category`)
						FROM `'._DB_PREFIX_.'category` c3
						WHERE c3.`nleft` > c.`nleft`
						AND c3.`nright` < c.`nright`
			AND c3.`id_category`  IN ('.implode(',', array_map('intval', $selected_cat)).')
					)' : '0').' AS nbSelectedSubCat
				FROM `'._DB_PREFIX_.'category` c
				LEFT JOIN `'._DB_PREFIX_.'category_lang` cl ON (c.`id_category` = cl.`id_category` '.Shop::addSqlRestrictionOnLang('cl', $id_shop).')';
		$sql .= ' LEFT JOIN `'._DB_PREFIX_.'category_shop` cs ON (c.`id_category` = cs.`id_category` AND cs.`id_shop` = '.(int)$id_shop.')';
		$sql .= ' WHERE `id_lang` = '.(int)$id_lang;
		if (Shop::getContext() == Shop::CONTEXT_SHOP && $use_shop_context)
			$sql .= ' AND cs.`id_shop` = '.(int)$shop->id;
		$sql .= ' AND c.`id_parent` = '.(int)$id_parent;
		if (!Shop::isFeatureActive() || Shop::getContext() == Shop::CONTEXT_SHOP && $use_shop_context)
			$sql .= ' ORDER BY cs.`position` ASC';

		return Db::getInstance(_PS_USE_SQL_SLAVE_)->executeS($sql);
	}

	/**
	  * Copy products from a category to another
	  *
	  * @param integer $id_old Source category ID
	  * @param boolean $id_new Destination category ID
	  * @return boolean Duplication result
	  */
	public static function duplicateProductCategories($id_old, $id_new)
	{
		$sql = 'SELECT `id_category`
				FROM `'._DB_PREFIX_.'category_product`
				WHERE `id_product` = '.(int)$id_old;
		$result = Db::getInstance()->executeS($sql);

		$row = array();
		if ($result)
			foreach ($result as $i)
				$row[] = '('.implode(', ', array((int)$id_new, $i['id_category'], '(SELECT tmp.max + 1 FROM (
					SELECT MAX(cp.`position`) AS max
					FROM `'._DB_PREFIX_.'category_product` cp
					WHERE cp.`id_category`='.(int)$i['id_category'].') AS tmp)'
				)).')';

		$flag = Db::getInstance()->execute('
			INSERT IGNORE INTO `'._DB_PREFIX_.'category_product` (`id_product`, `id_category`, `position`)
			VALUES '.implode(',', $row)
		);
		return $flag;
	}

	/**
	  * Check if category can be moved in another one.
		* The category cannot be moved in a child category.
	  *
		* @param integer $id_category current category
	  * @param integer $id_parent Parent candidate
	  * @return boolean Parent validity
	  */
	public static function checkBeforeMove($id_category, $id_parent)
	{
		if ($id_category == $id_parent) return false;
		if ($id_parent == Configuration::get('PS_HOME_CATEGORY')) return true;
		$i = (int)$id_parent;

		while (42)
		{
			$result = Db::getInstance()->getRow('SELECT `id_parent` FROM `'._DB_PREFIX_.'category` WHERE `id_category` = '.(int)$i);
			if (!isset($result['id_parent'])) return false;
			if ($result['id_parent'] == $id_category) return false;
			if ($result['id_parent'] == Configuration::get('PS_HOME_CATEGORY')) return true;
			$i = $result['id_parent'];
		}
	}

	public static function getLinkRewrite($id_category, $id_lang)
	{
		if (!Validate::isUnsignedId($id_category) || !Validate::isUnsignedId($id_lang))
			return false;

		if (!isset(self::$_links[$id_category.'-'.$id_lang]))
			self::$_links[$id_category.'-'.$id_lang] = Db::getInstance()->getValue('
				SELECT cl.`link_rewrite`
				FROM `'._DB_PREFIX_.'category_lang` cl
				WHERE `id_lang` = '.(int)$id_lang.'
				'.Shop::addSqlRestrictionOnLang('cl').'
				AND cl.`id_category` = '.(int)$id_category
			);
		return self::$_links[$id_category.'-'.$id_lang];
	}

	public function getLink(Link $link = null)
	{
		if (!$link)
			$link = Context::getContext()->link;
		return $link->getCategoryLink($this, $this->link_rewrite);
	}

	public function getName($id_lang = null)
	{
		if (!$id_lang)
		{
			if (isset($this->name[Context::getContext()->language->id]))
				$id_lang = Context::getContext()->language->id;
			else
				$id_lang = (int)Configuration::get('PS_LANG_DEFAULT');
		}
		return isset($this->name[$id_lang]) ? $this->name[$id_lang] : '';
	}

	/**
	  * Light back office search for categories
	  *
	  * @param integer $id_lang Language ID
	  * @param string $query Searched string
	  * @param boolean $unrestricted allows search without lang and includes first category and exact match
	  * @return array Corresponding categories
	  */
	public static function searchByName($id_lang, $query, $unrestricted = false)
	{
		if ($unrestricted === true)
			return Db::getInstance()->getRow('
				SELECT c.*, cl.*
				FROM `'._DB_PREFIX_.'category` c
				LEFT JOIN `'._DB_PREFIX_.'category_lang` cl
					ON (c.`id_category` = cl.`id_category`'.Shop::addSqlRestrictionOnLang('cl').')
				WHERE `name` LIKE \''.pSQL($query).'\'
			');
		else
			return Db::getInstance()->executeS('
				SELECT c.*, cl.*
				FROM `'._DB_PREFIX_.'category` c
				LEFT JOIN `'._DB_PREFIX_.'category_lang` cl
					ON (c.`id_category` = cl.`id_category`
					AND `id_lang` = '.(int)$id_lang.Shop::addSqlRestrictionOnLang('cl').')
				WHERE `name` LIKE \'%'.pSQL($query).'%\'
				AND c.`id_category` != '.(int)Configuration::get('PS_HOME_CATEGORY')
			);
	}

	/**
	  * Retrieve category by name and parent category id
	  *
	  * @param integer $id_lang Language ID
	  * @param string  $category_name Searched category name
	  * @param integer $id_parent_category parent category ID
	  * @return array Corresponding category
	  */
	public static function searchByNameAndParentCategoryId($id_lang, $category_name, $id_parent_category)
	{
		return Db::getInstance()->getRow('
			SELECT c.*, cl.*
		    FROM `'._DB_PREFIX_.'category` c
		    LEFT JOIN `'._DB_PREFIX_.'category_lang` cl
		    	ON (c.`id_category` = cl.`id_category`
		    	AND `id_lang` = '.(int)$id_lang.Shop::addSqlRestrictionOnLang('cl').')
		    WHERE `name`  LIKE \''.pSQL($category_name).'\'
				AND c.`id_category` != '.(int)Configuration::get('PS_HOME_CATEGORY').'
				AND c.`id_parent` = '.(int)$id_parent_category
		);
	}

	/**
	 * Get Each parent category of this category until the root category
	 *
	 * @param integer $id_lang Language ID
	 * @return array Corresponding categories
	 */
	public function getParentsCategories($id_lang = null)
	{
		$context = Context::getContext()->cloneContext();
		$context->shop = clone($context->shop);

		if (is_null($id_lang))
			$id_lang = $context->language->id;

		$categories = null;
		$id_current = $this->id;
		if (count(Category::getCategoriesWithoutParent()) > 1 && Configuration::get('PS_MULTISHOP_FEATURE_ACTIVE') && count(Shop::getShops(true, null, true)) != 1)
			$context->shop->id_category = Category::getTopCategory()->id;
		elseif (!$context->shop->id)
			$context->shop = new Shop(Configuration::get('PS_SHOP_DEFAULT'));
		$id_shop = $context->shop->id;
		while (true)
		{
			$sql = '
			SELECT c.*, cl.*
			FROM `'._DB_PREFIX_.'category` c
			LEFT JOIN `'._DB_PREFIX_.'category_lang` cl
				ON (c.`id_category` = cl.`id_category`
				AND `id_lang` = '.(int)$id_lang.Shop::addSqlRestrictionOnLang('cl').')';
			if (Shop::isFeatureActive() && Shop::getContext() == Shop::CONTEXT_SHOP)
				$sql .= '
			LEFT JOIN `'._DB_PREFIX_.'category_shop` cs
				ON (c.`id_category` = cs.`id_category` AND cs.`id_shop` = '.(int)$id_shop.')';
			$sql .= '
			WHERE c.`id_category` = '.(int)$id_current;
			if (Shop::isFeatureActive() && Shop::getContext() == Shop::CONTEXT_SHOP)
				$sql .= '
				AND cs.`id_shop` = '.(int)$context->shop->id;
			$root_category = Category::getRootCategory();
			if (Shop::isFeatureActive() && Shop::getContext() == Shop::CONTEXT_SHOP &&
				(!Tools::isSubmit('id_category') ||
					(int)Tools::getValue('id_category') == (int)$root_category->id ||
					(int)$root_category->id == (int)$context->shop->id_category))
				$sql .= '
					AND c.`id_parent` != 0';

			$result = Db::getInstance(_PS_USE_SQL_SLAVE_)->executeS($sql);

			if (isset($result[0]))
				$categories[] = $result[0];
			else if (!$categories)
				$categories = array();
			if (!$result || ($result[0]['id_category'] == $context->shop->id_category))
				return $categories;
			$id_current = $result[0]['id_parent'];
		}
	}
	/**
	* Specify if a category already in base
	*
	* @param $id_category Category id
	* @return boolean
	*/
	public static function categoryExists($id_category)
	{
		$row = Db::getInstance()->getRow('
		SELECT `id_category`
		FROM '._DB_PREFIX_.'category c
		WHERE c.`id_category` = '.(int)$id_category);

		return isset($row['id_category']);
	}

	public function cleanGroups()
	{
		Db::getInstance()->execute('DELETE FROM `'._DB_PREFIX_.'category_group` WHERE `id_category` = '.(int)$this->id);
	}
	
	public function cleanAssoProducts()
	{
		Db::getInstance()->execute('DELETE FROM `'._DB_PREFIX_.'category_product` WHERE `id_category` = '.(int)$this->id);
	}

	public function addGroups($groups)
	{
		foreach ($groups as $group)
		{
			$row = array('id_category' => (int)$this->id, 'id_group' => (int)$group);
			Db::getInstance()->insert('category_group', $row);
		}
	}

	public function getGroups()
	{
		$groups = array();
		$result = Db::getInstance()->executeS('
			SELECT cg.`id_group`
			FROM '._DB_PREFIX_.'category_group cg
			WHERE cg.`id_category` = '.(int)$this->id
		);
		foreach ($result as $group)
			$groups[] = $group['id_group'];
		return $groups;
	}

	public function addGroupsIfNoExist($id_group)
	{
		$groups = $this->getGroups();
		if (!in_array((int)$id_group, $groups))
			return $this->addGroups(array((int)$id_group));
		else
			return false;
	}

	/**
	 * checkAccess return true if id_customer is in a group allowed to see this category.
	 *
	 * @param mixed $id_customer
	 * @access public
	 * @return boolean true if access allowed for customer $id_customer
	 */
	public function checkAccess($id_customer)
	{
		if (!$id_customer)
		{
			$result = Db::getInstance(_PS_USE_SQL_SLAVE_)->getRow('
				SELECT ctg.`id_group`
				FROM '._DB_PREFIX_.'category_group ctg
				WHERE ctg.`id_category` = '.(int)$this->id.' AND ctg.`id_group` = '.(int)Group::getCurrent()->id.'
			');
		} else {
			$result = Db::getInstance(_PS_USE_SQL_SLAVE_)->getRow('
				SELECT ctg.`id_group`
				FROM '._DB_PREFIX_.'category_group ctg
				INNER JOIN '._DB_PREFIX_.'customer_group cg on (cg.`id_group` = ctg.`id_group` AND cg.`id_customer` = '.(int)$id_customer.')
				WHERE ctg.`id_category` = '.(int)$this->id
			);
		}
		if ($result && isset($result['id_group']) && $result['id_group'])
			return true;
		return false;
	}

	/**
	 * Update customer groups associated to the object
	 *
	 * @param array $list groups
	 */
	public function updateGroup($list)
	{
		$this->cleanGroups();
		if ($list && !empty($list))
			$this->addGroups($list);
		else
			$this->addGroups(array(Configuration::get('PS_UNIDENTIFIED_GROUP'), Configuration::get('PS_GUEST_GROUP'), Configuration::get('PS_CUSTOMER_GROUP')));
	}

	public static function setNewGroupForHome($id_group)
	{
		if (!(int)$id_group)
			return false;
		return Db::getInstance()->execute('
			INSERT INTO `'._DB_PREFIX_.'category_group`
			VALUES ('.(int)Context::getContext()->shop->getCategory().', '.(int)$id_group.')
		');
	}

	public function updatePosition($way, $position)
	{
		$id = Context::getContext()->shop->id;
		$id_shop = $id ? $id: Configuration::get('PS_SHOP_DEFAULT');
		if (!$res = Db::getInstance()->executeS('
			SELECT cp.`id_category`, cs.`position`, cp.`id_parent`
			FROM `'._DB_PREFIX_.'category` cp
			LEFT JOIN `'._DB_PREFIX_.'category_shop` cs
				ON (cp.`id_category` = cs.`id_category` AND cs.`id_shop` = '.(int)$id_shop.')
			WHERE cp.`id_parent` = '.(int)$this->id_parent.'
			ORDER BY cs.`position` ASC'
		))
			return false;

		foreach ($res as $category)
			if ((int)$category['id_category'] == (int)$this->id)
				$moved_category = $category;

		if (!isset($moved_category) || !isset($position))
			return false;
		// < and > statements rather than BETWEEN operator
		// since BETWEEN is treated differently according to databases
		$result = (Db::getInstance()->execute('
			UPDATE `'._DB_PREFIX_.'category_shop` cs
			LEFT JOIN `'._DB_PREFIX_.'category` c
				ON (c.`id_category` = cs.`id_category` AND cs.`id_shop` = '.(int)$id_shop.')
			SET cs.`position`= cs.`position` '.($way ? '- 1' : '+ 1').'
			WHERE cs.`position`
			'.($way
				? '> '.(int)$moved_category['position'].' AND cs.`position` <= '.(int)$position
				: '< '.(int)$moved_category['position'].' AND cs.`position` >= '.(int)$position).'
			AND c.`id_parent`='.(int)$moved_category['id_parent'])
		&& Db::getInstance()->execute('
			UPDATE `'._DB_PREFIX_.'category_shop` cs
			LEFT JOIN `'._DB_PREFIX_.'category` c
				ON (c.`id_category` = cs.`id_category` AND cs.`id_shop` = '.(int)$id_shop.')
			SET cs.`position` = '.(int)$position.'
			WHERE c.`id_parent` = '.(int)$moved_category['id_parent'].'
			AND c.`id_category`='.(int)$moved_category['id_category']));
		Hook::exec('actionCategoryUpdate');
		return $result;
	}

	/**
	 * cleanPositions keep order of category in $id_category_parent,
	 * but remove duplicate position. Should not be used if positions
	 * are clean at the beginning !
	 *
	 * @param mixed $id_category_parent
	 * @return boolean true if succeed
	 */
	public static function cleanPositions($id_category_parent = null)
	{
		if ($id_category_parent === null)
			return;
		$return = true;

		$id = Context::getContext()->shop->id;
		$id_shop = $id ? $id : Configuration::get('PS_SHOP_DEFAULT');
		$result = Db::getInstance()->executeS('
			SELECT c.`id_category`
			FROM `'._DB_PREFIX_.'category` c
			LEFT JOIN `'._DB_PREFIX_.'category_shop` cs
				ON (c.`id_category` = cs.`id_category` AND cs.`id_shop` = '.(int)$id_shop.')
			WHERE c.`id_parent` = '.(int)$id_category_parent.'
			ORDER BY cs.`position`
		');
		$count = count($result);
		for ($i = 0; $i < $count; $i++)
		{
			$sql = '
				UPDATE `'._DB_PREFIX_.'category` c
				LEFT JOIN `'._DB_PREFIX_.'category_shop` cs
					ON (c.`id_category` = cs.`id_category` AND cs.`id_shop` = '.(int)$id_shop.')
				SET cs.`position` = '.(int)($i+1).'
				WHERE c.`id_parent` = '.(int)$id_category_parent.'
				AND c.`id_category` = '.(int)$result[$i]['id_category'];
			$return &= Db::getInstance()->execute($sql);
		}
		return $return;
	}

	/** this function return the number of category + 1 having $id_category_parent as parent.
	 *
	 * @todo rename that function to make it understandable (getNewLastPosition for example)
	 * @param int $id_category_parent the parent category
	 * @param int $id_shop
	 * @return int
	 */
	public static function getLastPosition($id_category_parent, $id_shop)
	{
		return (int)(Db::getInstance()->getValue('
		SELECT MAX(cs.`position`)
		FROM `'._DB_PREFIX_.'category` c
		LEFT JOIN `'._DB_PREFIX_.'category_shop` cs
			ON (c.`id_category` = cs.`id_category` AND cs.`id_shop` = '.(int)$id_shop.')
		WHERE c.`id_parent` = '.(int)$id_category_parent) + 1);
	}

	public static function getUrlRewriteInformations($id_category)
	{
		return Db::getInstance()->executeS('
			SELECT l.`id_lang`, c.`link_rewrite`
			FROM `'._DB_PREFIX_.'category_lang` AS c
			LEFT JOIN  `'._DB_PREFIX_.'lang` AS l ON c.`id_lang` = l.`id_lang`
			WHERE c.`id_category` = '.(int)$id_category.'
			AND l.`active` = 1'
		);
	}

	/**
	 * Return nleft and nright fields for a given category
	 *
	 * @since 1.5.0
	 * @param int $id
	 * @return array
	 */
	public static function getInterval($id)
	{
		$sql = 'SELECT nleft, nright, level_depth
				FROM '._DB_PREFIX_.'category
				WHERE id_category = '.(int)$id;
		if (!$result = Db::getInstance()->getRow($sql))
			return false;
		return $result;
	}

	/**
	 * Check if current category is a child of shop root category
	 *
	 * @since 1.5.0
	 * @param Shop $shop
	 * @return bool
	 */
	public function inShop(Shop $shop = null)
	{
		if (!$shop)
			$shop = Context::getContext()->shop;

		if (!$interval = Category::getInterval($shop->getCategory()))
			return false;
		return ($this->nleft >= $interval['nleft'] && $this->nright <= $interval['nright']);
	}
	
	public static function inShopStatic($id_category, Shop $shop = null)
	{
		if (!$shop || !is_object($shop))
			$shop = Context::getContext()->shop;

		if (!$interval = Category::getInterval($shop->getCategory()))
			return false;
		$row = Db::getInstance(_PS_USE_SQL_SLAVE_)->getRow('SELECT nleft, nright FROM `'._DB_PREFIX_.'category` WHERE id_category = '.(int)$id_category);
		return ($row['nleft'] >= $interval['nleft'] && $row['nright'] <= $interval['nright']);
	}

	public function getChildrenWs()
	{
		$id = Context::getContext()->shop->id;
		$id_shop = $id ? $id : Configuration::get('PS_SHOP_DEFAULT');
		$result = Db::getInstance(_PS_USE_SQL_SLAVE_)->executeS('
		SELECT c.`id_category` as id
		FROM `'._DB_PREFIX_.'category` c
		LEFT JOIN `'._DB_PREFIX_.'category_shop` cs
			ON (c.`id_category` = cs.`id_category` AND cs.`id_shop` = '.(int)$id_shop.')
		WHERE c.`id_parent` = '.(int)$this->id.'
		AND c.`active` = 1
		ORDER BY cs.`position` ASC');
		return $result;
	}

	public function getProductsWs()
	{
		$result = Db::getInstance(_PS_USE_SQL_SLAVE_)->executeS('
		SELECT cp.`id_product` as id
		FROM `'._DB_PREFIX_.'category_product` cp
		WHERE cp.`id_category` = '.(int)$this->id.'
		ORDER BY `position` ASC');
		return $result;
	}

	/**
	 * Search for another category with the same parent and the same position
	 *
	 * @return array first category found
	 */
	public function getDuplicatePosition()
	{
		$id = Context::getContext()->shop->id;
		$id_shop = $id ? $id : Configuration::get('PS_SHOP_DEFAULT');
		return Db::getInstance()->getRow('
		SELECT c.`id_category` as id
		FROM `'._DB_PREFIX_.'category` c
		LEFT JOIN `'._DB_PREFIX_.'category_shop` cs
			ON (c.`id_category` = cs.`id_category` AND cs.`id_shop` = '.(int)$id_shop.')
		WHERE c.`id_parent` = '.(int)$this->id_parent.'
		AND cs.`position` = '.(int)$this->position.'
		AND c.`id_category` != '.(int)$this->id);
	}

	public function getWsNbProductsRecursive()
	{
		$result = Db::getInstance(_PS_USE_SQL_SLAVE_)->executeS('
			SELECT COUNT(distinct(id_product)) as nb_product_recursive
			FROM  `'._DB_PREFIX_.'category_product`
			WHERE id_category IN (
				SELECT c2.id_category
				FROM `'._DB_PREFIX_.'category` c2
				'.Shop::addSqlAssociation('category', 'c2').'
				WHERE c2.nleft > '.(int)$this->nleft.'
					AND c2.nright < '.(int)$this->nright.'
					AND c2.active = 1
				UNION SELECT '.(int)$this->id.'
			)
		');
		if (!$result)
			return -1;
		return $result[0]['nb_product_recursive'];
	}

	/**
	 *
	 * @param Array $ids_category
	 * @param int $id_lang
	 * @return Array
	 */
	public static function getCategoryInformations($ids_category, $id_lang = null)
	{
		if ($id_lang === null)
			$id_lang = Context::getContext()->language->id;

		if (!is_array($ids_category) || !count($ids_category))
			return;

		$categories = array();
		$results = Db::getInstance(_PS_USE_SQL_SLAVE_)->executeS('
			SELECT c.`id_category`, cl.`name`, cl.`link_rewrite`, cl.`id_lang`
			FROM `'._DB_PREFIX_.'category` c
			LEFT JOIN `'._DB_PREFIX_.'category_lang` cl ON (c.`id_category` = cl.`id_category`'.Shop::addSqlRestrictionOnLang('cl').')
			'.Shop::addSqlAssociation('category', 'c').'
			WHERE cl.`id_lang` = '.(int)$id_lang.'
			AND c.`id_category` IN ('.implode(',', array_map('intval', $ids_category)).')
		');

		foreach ($results as $category)
			$categories[$category['id_category']] = $category;

		return $categories;
	}

	/**
	 * @param $id_shop
	 * @return bool
	 */
	public function isParentCategoryAvailable($id_shop)
	{
		$id = Context::getContext()->shop->id;
		$id_shop = $id ? $id : Configuration::get('PS_SHOP_DEFAULT');
		return (bool)Db::getInstance()->getValue('
		SELECT c.`id_category`
		FROM `'._DB_PREFIX_.'category` c
		LEFT JOIN `'._DB_PREFIX_.'category_shop` cs
			ON (c.`id_category` = cs.`id_category` AND cs.`id_shop` IN ('.implode(', ', Shop::getContextListShopID()).') )
		WHERE cs.`id_shop` = '.(int)$id_shop.'
		AND c.`id_parent` = '.(int)$this->id_parent);
	}

	/**
	 * Add association between shop and cateogries
	 * @param int $id_shop
	 * @return bool
	 */
	public function addShop($id_shop)
	{
		$data = array();
		if (!$id_shop)
		{
			foreach (Shop::getShops(false) as $shop)
				if (!$this->existsInShop($shop['id_shop']))
					$data[] = array(
						'id_category' => (int)$this->id,
						'id_shop' => (int)$shop['id_shop'],
					);
		}
		else if (!$this->existsInShop($id_shop))
			$data[] = array(
				'id_category' => (int)$this->id,
				'id_shop' => (int)$id_shop,
			);

		return Db::getInstance()->insert('category_shop', $data);
	}

	public static function getRootCategories($id_lang = null, $active = true)
	{
		if (!$id_lang)
			$id_lang = Context::getContext()->language->id;
		return Db::getInstance(_PS_USE_SQL_SLAVE_)->executeS('
		SELECT DISTINCT(c.`id_category`), cl.`name`
		FROM `'._DB_PREFIX_.'category` c
		LEFT JOIN `'._DB_PREFIX_.'category_lang` cl ON (cl.`id_category` = c.`id_category` AND cl.`id_lang`='.(int)$id_lang.')
		WHERE `is_root_category` = 1
		'.(($active) ? 'AND `active` = 1': ''));
	}

	public static function getCategoriesWithoutParent()
	{
		return Db::getInstance(_PS_USE_SQL_SLAVE_)->executeS('
		SELECT DISTINCT c.*
		FROM `'._DB_PREFIX_.'category` c
		LEFT JOIN `'._DB_PREFIX_.'category_lang` cl ON (c.`id_category` = cl.`id_category` AND cl.`id_lang` = '.(int)Context::getContext()->language->id.')
		WHERE `level_depth` = 1');
	}

	public function isRootCategoryForAShop()
	{
		return (bool)Db::getInstance(_PS_USE_SQL_SLAVE_)->getValue('
		SELECT `id_shop`
		FROM `'._DB_PREFIX_.'shop`
		WHERE `id_category` = '.(int)$this->id);
	}

	/**
	 * @static
	 * @param null $id_lang
	 * @return Category
	 */
	public static function getTopCategory($id_lang = null)
	{
		if (is_null($id_lang))
			$id_lang = Context::getContext()->language->id;
		$id_category = Db::getInstance()->getValue('
		SELECT `id_category`
		FROM `'._DB_PREFIX_.'category`
		WHERE `id_parent` = 0');
		return new Category($id_category, $id_lang);
	}

	public function addPosition($position, $id_shop = null)
	{
		$return = true;
		if (is_null($id_shop))
		{
			if (Shop::getContext() != Shop::CONTEXT_SHOP)
				foreach (Shop::getContextListShopID() as $id_shop)
					$return &= Db::getInstance()->execute('
						INSERT INTO `'._DB_PREFIX_.'category_shop` (`id_category`, `id_shop`, `position`) VALUES
						('.(int)$this->id.', '.(int)$id_shop.', '.(int)$position.')
						ON DUPLICATE KEY UPDATE `position` = '.(int)$position);
			else
			{
				$id = Context::getContext()->shop->id;
				$id_shop = $id ? $id : Configuration::get('PS_SHOP_DEFAULT');
				$return &= Db::getInstance()->execute('
					INSERT INTO `'._DB_PREFIX_.'category_shop` (`id_category`, `id_shop`, `position`) VALUES
					('.(int)$this->id.', '.(int)$id_shop.', '.(int)$position.')
					ON DUPLICATE KEY UPDATE `position` = '.(int)$position);
			}
		}
		else
			$return &= Db::getInstance()->execute('
			INSERT INTO `'._DB_PREFIX_.'category_shop` (`id_category`, `id_shop`, `position`) VALUES
			('.(int)$this->id.', '.(int)$id_shop.', '.(int)$position.')
			ON DUPLICATE KEY UPDATE `position` = '.(int)$position);

		return $return;
	}

	public static function getShopsByCategory($id_category)
	{
		return Db::getInstance()->executeS('
			SELECT `id_shop`
			FROM `'._DB_PREFIX_.'category_shop`
			WHERE `id_category` = '.(int)$id_category);
	}

	/**
	* Update categories for a shop
	*
	* @param string $categories Categories list to associate a shop
	* @param string $id_shop Categories list to associate a shop
	* @return array Update/insertion result
	*/
	public static function updateFromShop($categories, $id_shop)
	{
		$shop = new Shop($id_shop);
		// if array is empty or if the default category is not selected, return false
		if (empty($categories) || !in_array($shop->id_category, $categories))
			return false;

		// delete categories for this shop
		Category::deleteCategoriesFromShop($id_shop);

		// and add $categories to this shop
		return Category::addToShop($categories, $id_shop);
	}

	/**
	 * Delete category from shop $id_shop
	 * @param int $id_shop
	 * @return bool
	 */
	public function deleteFromShop($id_shop)
	{
		return Db::getInstance()->execute(
			'DELETE FROM `'._DB_PREFIX_.'category_shop`
			WHERE `id_shop` = '.(int)$id_shop.'
			AND id_category = '.(int)$this->id.''
		);
	}

	/**
	 * Delete every categories
	 * @return bool
	 */
	public static function deleteCategoriesFromShop($id_shop)
	{
		return Db::getInstance()->execute('
		DELETE FROM `'._DB_PREFIX_.'category_shop` WHERE `id_shop` = '.(int)$id_shop.'
		');
	}

	/**
	 * Add some categories to a shop
	 * @param array $categories
	 * @return bool
	 */
	public static function addToShop(array $categories, $id_shop)
	{
		if (!is_array($categories))
			return false;
		$sql = '
		INSERT INTO `'._DB_PREFIX_.'category_shop` (`id_category`, `id_shop`) VALUES';
		$tab_categories = array();
		foreach ($categories as $id_category)
		{
			$tab_categories[] = new Category($id_category);
			$sql .= '("'.(int)$id_category.'", "'.(int)$id_shop.'"),';
		}
		// removing last comma to avoid SQL error
		$sql = substr($sql, 0, strlen($sql) - 1);

		$return = Db::getInstance()->execute($sql);
		// we have to update position for every new entries
		foreach ($tab_categories as $category)
			$category->addPosition(Category::getLastPosition($category->id_parent, $id_shop), $id_shop);

		return $return;
	}

	public function existsInShop($id_shop)
	{
		return (bool)Db::getInstance()->getValue('
			SELECT `id_category`
			FROM `'._DB_PREFIX_.'category_shop`
			WHERE `id_category` = '.(int)$this->id.'
			AND `id_shop` = '.(int)$id_shop);
	}
}

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