addFieldToFilter not working properly

Question

When I try to add a field to filter on my magento 2.2.4 quote collection, the quote are not arranged in the right order.

$customerId  = $this->_customerSession->getCustomer()->getId();
            echo $customerId; // 2
            $collection = $this->collection->create();
            $collection->addFieldToFilter('customer_id', customerId);

This code reverses my last two ids (121 is after 120).

But this :

        $customerId  = $this->_customerSession->getCustomer()->getId();
        echo $customerId;
        $collection = $this->collection->create();
        echo "<pre>".print_r($collection->getData(), true)."</pre>";

Is giving me the right order. But i need to filter $collection by customer_id. How do I do that ?

Answer 1

You can add a sort order to the collection (before it's loaded):

$field = 'customer_id';
$collection->addOrder(
    $field,
    'DESC' // 'ASC'
);