Magento 2.3 : Select Random Product id from Product collection

Question

Is there any way to select random product ID from product collection object in magento 2.3

$_productCollection = $this->getProductList($catid); How can I select random product id from this object

Answer 1

Please try with below code :

$_productCollection = $this
        ->getCategory($catid)
        ->getProductCollection()
        ->addAttributeToSelect('*')
        ->setPageSize(5);

$_productCollection->getSelect()->orderRand();

$products = $_productCollection->getItems();

hope its work for you.

Answer 2

You can use below code to get random product id from a category.

$productIds = array_column($_productCollection->getData(), 'entity_id');
$randomProductId = $productIds[array_rand($productIds)];
echo $randomProductId;

Example code in a block file:

<?php
namespace Amit\Test\Block;
use Magento\Framework\View\Element\Template;
use Magento\Catalog\Model\Category;

class RandomProductId extends \Magento\Framework\View\Element\Template
{
    public function __construct(
        Category $category,
        Template\Context $context, 
        array $data = array())
    {
        $this->category = $category;
        parent::__construct($context, $data);
    }

    public function getRandomProductId($categoryId)
    {
        $productCollection = $this->category->load($categoryId)->getProductCollection()->addAttributeToSelect('*');
        $productIds = array_column($productCollection->getData(), 'entity_id');
        $randomProductId = $productIds[array_rand($productIds)];
        return $randomProductId;
    }
}