How to filter product collection using 2 or more category filters in magento2?

Question

How to filter product collection using more than two category. In magento1, we can use ->addAttributeToFilter('category_ids',array('finset'=>'36,37')); but how can i do this in magento2? Also i have checked Multiple category filter extension. Collection show correct but other filters (Like Price,color) and collection size and pagination give a wrong data.

Answer 1

Add this categories filter

$catalog_ids = array('10','20');

$collection->addCategoriesFilter(array('in' => $catalog_ids));

Or use below full product collection with categories filter

public function __construct( \Magento\Catalog\Model\ResourceModel\Product\CollectionFactory $collectionFactory ) { $this->collectionFactory = $collectionFactory; }

$catalog_ids = array('10','20');

$collection => $this->collectionFactory->create();

$collection->addAttributeToSelect('*');

$collection->addCategoriesFilter(array('in' => $catalog_ids));

I hope this might help you.

Thanks