Magento2 get Random Order category collection

Question

i want to random 5 category but not luck for me

i have use below code

$categoryFactory = $objectManager->create('Magento\Catalog\Model\ResourceModel\Category\CollectionFactory');
$categories = $categoryFactory->create()->addAttributeToSelect('*')->setPageSize(5)->getSelect()->orderRand();

Note: order random not working for me

Answer 1

I know it's not proper solution. But, It maybe helpful for you. Try to use this below code :

    $objectManager = \Magento\Framework\App\ObjectManager::getInstance();
    $categoryFactory = $objectManager->create('Magento\Catalog\Model\ResourceModel\Category\CollectionFactory');
    $categories = $categoryFactory->create()->addAttributeToSelect('*');
    $cat_arr = $categories->getData();
    $random_keys = array_rand($cat_arr, 5);
    $cat_ids = [];
    foreach ($random_keys as $key => $value) {
        $cat_ids[] = $cat_arr[$value]['entity_id'];
    }
    $cat_rand_obj = $categoryFactory->create()->addAttributeToSelect('*')->addAttributeToFilter('entity_id', ['in' => $cat_ids]);
    echo "<pre>";
    print_r($cat_rand_obj->getData());

Note: Avoid to use object manager. Use Factory Method structure.