I want to filter multiselect product attribute which has backend type
Magento\Eav\Model\Entity\Attribute\Backend\ArrayBackend. So when I save attribute it gets saved as the comma-separated values in the database. So at the time of Product filtering, I applied filter by 2 values as like this
$this->collection->addAttributeToSelect('*'); $this->collection->addAttributeToFilter( 'concerns', array('finset' => 'concerns_1,concerns_4'));
It's not filtering with the above code (means collection size returning zero) but when I filter on a single value its working fine. Please suggest me how can I filter on multiple values. Thanks in advance.