elementcatalog.php

См. документацию.

<?php
namespace Bitrix\Iblock\Template\Entity;
 
use Bitrix\Catalog;
 
class ElementCatalog extends Base
{
    protected $price = null;
    protected $sku = null;
    protected $store = null;

    public function __construct($id)
    {
        parent::__construct($id);
        $this->fieldMap = array(
            "weight" => "WEIGHT",
            "measure" => "MEASURE",
            "store" => "STORE",
        );
    }

    public function resolve($entity)
    {
        if ($entity === "price")
        {
            if (!$this->price && $this->loadFromDatabase())
            {
                $this->price = ElementPrice::getInstance($this->id);
            }
 
            if ($this->price)
                return $this->price;
        }
        elseif ($entity === "sku")
        {
            if (!$this->sku && $this->loadFromDatabase())
            {
                $this->sku = ElementSku::getInstance($this->id);
            }
 
            if ($this->sku)
                return $this->sku;
        }
        elseif ($entity === "store")
        {
            if (!$this->store)
            {
                $this->store = CatalogStore::getInstance(0);
            }
 
            if ($this->store)
                return $this->store;
        }
        return parent::resolve($entity);
    }

    public function setFields(array $fields)
    {
        parent::setFields($fields);
        if (
            is_array($this->fields)
            && $this->fields["MEASURE"] > 0
        )
        {
            $this->fields["MEASURE"] = new ElementCatalogMeasure($this->fields["MEASURE"]);
        }
    }

    protected function loadFromDatabase()
    {
        if (!isset($this->fields))
        {
            $this->fields =Catalog\ProductTable::getRow([
                'filter' => [
                    '=ID' => $this->id,
                ],
            ]);
            if (is_array($this->fields))
            {
                if ($this->fields['MEASURE'] > 0)
                {
                    $this->fields['MEASURE'] = new ElementCatalogMeasure($this->fields['MEASURE']);
                }
                $this->fields['STORE'] = new ElementCatalogStoreList(0);
            }
            else
            {
                $this->fields = [
                    'STORE' => new ElementCatalogStoreList(0),
                ];
            }
        }
 
        return true;
    }
}
 
class ElementCatalogMeasure extends LazyValueLoader
{
    protected function load()
    {
        $measureList = \CCatalogMeasure::getList(array(), array(
            "ID" => $this->key
        ), false, false, array("MEASURE_TITLE"));
        $measure = $measureList->fetch();
        if ($measure)
            return $measure['MEASURE_TITLE'];
        else
            return "";
    }
}
 
class ElementCatalogStoreList extends LazyValueLoader
{
    protected function load()
    {
        $storeList = \CCatalogStore::getList(array(), array(
            "ACTIVE" => "Y",
        ), false, false, array("ID", "TITLE", "ACTIVE"));
        $result = array();
        while($ar = $storeList->fetch())
        {
            $result[] = $ar["TITLE"];
        }
        return $result;
    }
}