SectionCollection.php

См. документацию.

<?php
 
namespace Bitrix\Catalog\v2\Section;
 
use Bitrix\Catalog\v2\BaseCollection;
use Bitrix\Main\Result;
use Bitrix\Main\Type;

class SectionCollection extends BaseCollection
{
    protected $factory;
    protected $repository;
 
    public function __construct(SectionFactory $factory, SectionRepositoryContract $repository)
    {
        $this->factory = $factory;
        $this->repository = $repository;
    }

    public function setValues(array $values): self
    {
        // ToDo recalculate already loaded properties on section modifications?
        $currentValues = $this->getValues();
        $filteredValues = $this->filterValues($values);
 
        $oldValuesToRemove = array_diff($currentValues, $filteredValues);
 
        if (!empty($oldValuesToRemove))
        {
            $oldSections = [];

            foreach ($this->getIterator() as $item)
            {
                if (in_array($item->getValue(), $oldValuesToRemove, true))
                {
                    $oldSections[] = $item;
                }
            }
 
            $this->remove(...$oldSections);
        }
 
        $newValuesToAdd = array_diff($filteredValues, $currentValues);
 
        if (!empty($newValuesToAdd))
        {
            $newSections = [];
 
            foreach ($newValuesToAdd as $value)
            {
                $newSections[] = $this
                    ->factory
                    ->createEntity()
                    ->setValue($value)
                ;
            }
 
            $this->add(...$newSections);
        }
 
        return $this;
    }
 
    public function getValues(): array
    {
        $values = [];

        foreach ($this->getIterator() as $item)
        {
            $values[] = $item->getValue();
        }
 
        return $values;
    }
 
    private function filterValues(array $values): array
    {
        Type\Collection::normalizeArrayValuesByInt($values);
 
        return $values;
    }
 
    public function saveInternal(): Result
    {
        $result = new Result();
 
        if ($this->isChanged())
        {
            $res = $this->repository->save(...$this->getIterator());
 
            if ($res->isSuccess())
            {
                $this->clearChanged();
            }
            else
            {
                $result->addErrors($res->getErrors());
            }
        }
 
        return $result;
    }
}