Magento 2 reset sorting not working

Question

I am working on Magento 2.4. I need some customisation in that I need to reset previous sorting and I need to set new 'Order By' column. I am using $collection->getSelect()->reset(Zend_Db_Select::ORDER); but it is not working and I am getting following error :

main.CRITICAL: Error: Class 'Vendor\Module\Plugin\Zend_Db_Select' not found in /app/code/Vendor/Module/Plugin/Layer.php:174

How to use reset sort column ? Any solution ?

UPDATE

I got the solution for above question and used the following

$result_main->getSelect()->reset(\Magento\Framework\DB\Select::ORDER);
$result_main->getSelect()->order(new \Zend_Db_Expr("FIELD(e.entity_id, " . implode(",", $id_order) . ")"));

But it is not sorting based on given ids.

I also print the query :

SELECT e.*, price_index.price, price_index.tax_class_id, price_index.final_price, IF(price_index.tier_price IS NOT NULL, LEAST(price_index.min_price, price_index.tier_price), price_index.min_price) AS minimal_price, price_index.min_price, price_index.max_price, price_index.tier_price FROM catalog_product_entity AS e INNER JOIN catalog_product_index_price AS price_index ON price_index.entity_id = e.entity_id AND price_index.customer_group_id = 0 AND price_index.website_id = '1' INNER JOIN catalog_product_website AS product_website ON product_website.product_id = e.entity_id AND product_website.website_id = 1 ORDER BY FIELD(e.entity_id, 2521, 10, 4444, 1286, 4396, 4397, 656, 4445, 4307, 3110, 1276, 9, 4446, 1280, 1611, 155, 286, 5319, 4395, 4392, 4399, 4401, 6424, 1445, 2967, 1281, 1278, 6188, 4398, 4389, 4393, 3167, 4944, 4571, 4388, 4390, 4391, 4394, 4950, 4945, 1529, 4400, 1526, 1525, 1523, 4948, 4947, 1527, 4306, 4943, 1709, 4372, 4447, 6189, 1444, 3539, 4566, 3534, 3538, 3535, 3536, 3537, 5507, 4402, 1524, 1123, 4760, 5777, 5384, 1792, 4512, 3374, 4552, 4882, 4538, 4885, 5775, 1578, 6567, 5332, 4368, 1561, 1559, 4522, 5968, 6377, 5776, 5778, 1577, 6379, 6466, 6384, 5965, 6381, 4508, 4570, 4886, 1793, 4507, 3375, 4521, 4506, 5782, 3540, 4880, 1446, 5785, 4540, 4884, 4539, 4883, 5784, 5783, 4547, 6398, 6200, 4879, 4881, 4548, 4546, 1809, 5779, 5780, 5786, 4467, 5781, 6136, 3508, 3507, 3844, 4858, 4857, 6382, 5034, 4437, 6378, 4473, 6383, 6380, 5616, 5619, 5620, 5621, 4468, 6572, 6394, 4365, 6479, 4370, 4303, 4511, 4935, 4574, 4517, 4524, 4525, 1565, 1566, 1567, 4373, 4513, 4510, 4369, 6140, 4509, 309, 3509, 4471, 4577, 4472, 3468, 3469, 4573, 4470, 4366, 1770, 3412, 4526, 4531, 6267, 6471, 4533, 4532, 4535, 4534, 6026, 4958, 4939, 4940, 4527, 4720, 4528, 4523, 5189, 6559, 1482, 1483, 6201, 6482, 6596, 4519, 1336, 6387, 6585, 4576, 4500, 1568, 4520, 4010, 4367, 4376, 4371, 1105, 4374, 4572, 3492, 1560, 1562, 6472, 6369, 5573, 4575, 198, 199, 200, 201, 1564, 4375, 5265, 6397, 1768, 6598, 4567, 6628, 1810, 1257, 1811, 4329, 4514, 4469, 4518, 1000, 3506, 4012, 1253, 1254, 1255, 1256, 1258, 1252, 1259, 1260, 1261, 1262, 1263, 1265, 1266, 1267, 1268, 1269, 1270, 1558, 6345)

Answer 1

Try using it as described below:

RESETTING THE ORDER

$collection->getSelect()->reset(\Magento\Framework\DB\Select::ORDER);

---

ADDING PREDEFINED ORDER TO COLLECTION

$collection->getSelect()->order(new \Zend_Db_Expr('FIELD(e.entity_id, ' . implode(',', $allIds) . ')'));

---

FILTER BY SPECIFIC IDS AND SORT BY IDS

if you want to limit the collection to include only products with specific IDs, then you should use

$collection->addAttributeToFilter('entity_id', ['in' => $allIds]);
$collection->setOrder('entity_id', \Magento\Framework\Data\Collection::SORT_ORDER_ASC);

---

ADDING PREDEFINED ORDER TO COLLECTION AND SORT BY THE SAME COLUMN

otherwise, if you still need to use the initial approach with the ->order() method, then try appending the regular order after the above lines of code and see what happens:

$collection->getSelect()->reset(\Magento\Framework\DB\Select::ORDER);
$collection->getSelect()->order(new \Zend_Db_Expr('FIELD(e.entity_id, ' . implode(',', $allIds) . ')'));
$collection->setOrder('entity_id', \Magento\Framework\Data\Collection::SQL_ASC);