Magento 2: How to convert product array into collection?

Question

I am a new developer of Magento 2.

I got an array of product items from order.

$products = $order->getAllVisibleItems();

However, getAllVisibleItems() get the array of products. I need to convert the array to collection so that I can render it by pager. what should I do ?

Answer 1

Check how it's done in the \Magento\Sales\Block\Order\Items::_prepareLayout() method.

You create item collection factory and use it as collection for building pager

 /**
 * @param \Magento\Framework\View\Element\Template\Context $context
 * @param \Magento\Framework\Registry $registry
 * @param array $data
 * @param \Magento\Sales\Model\ResourceModel\Order\Item\CollectionFactory|null $itemCollectionFactory
 */
 public function __construct(
 \Magento\Framework\View\Element\Template\Context $context,
 \Magento\Framework\Registry $registry,
 array $data = [],
 \Magento\Sales\Model\ResourceModel\Order\Item\CollectionFactory $itemCollectionFactory = null
 ) {
 $this->_coreRegistry = $registry;
 $this->itemCollectionFactory = $itemCollectionFactory ?: \Magento\Framework\App\ObjectManager::getInstance()
 ->get(\Magento\Sales\Model\ResourceModel\Order\Item\CollectionFactory::class);
 parent::__construct($context, $data);
 }
 /**
 * Init pager block and item collection with page size and current page number.
 *
 * @return $this
 */
 protected function _prepareLayout()
 {
 $this->itemsPerPage = $this->_scopeConfig->getValue('sales/orders/items_per_page');
 $this->itemCollection = $this->itemCollectionFactory->create();
 $this->itemCollection->setOrderFilter($this->getOrder());
 $this->itemCollection->filterByParent(null);
 /** @var \Magento\Theme\Block\Html\Pager $pagerBlock */
 $pagerBlock = $this->getChildBlock('sales_order_item_pager');
 if ($pagerBlock) {
 $pagerBlock->setLimit($this->itemsPerPage);
 //here pager updates collection parameters
 $pagerBlock->setCollection($this->itemCollection);
 $pagerBlock->setAvailableLimit([$this->itemsPerPage]);
 $pagerBlock->setShowAmounts($this->isPagerDisplayed());
 }
 return parent::_prepareLayout();
 }

• bfontaine: This answer’s OP underlying issue, but it doesn’t answer the original question: how to get a collection when one has an array.
• Pavel Novitsky: @bfontaine check \Magento\Framework\Data\Collection::addItem() method. Just create collection factory, convert array item into the \Magento\Framework\DataObject and add items to collection
• bfontaine: _____ Thank you!