How To Add More Sorting Fields in Magento 2

How To Add More Sorting Fields in Magento 2:- In this blog I’m going to explain how we can add more sorting fields on product collection page or category page.

In order to add more sorting fields you need to follow below steps.

Step 1: Make plugin of Class Magento\Catalog\Model\Config and Magento\Catalog\Block\Product\ProductList\Toolbar by defining it’s entry in di.xml.

So, lets create a di.xml file in app/code/Vendor/ModuleName/etc directory and write below code..

<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
    <type name="Magento\Catalog\Model\Config">
        <plugin name="catalog_config_plugin" type="Vendor\ModuleName\Plugin\Config" />
    </type>
    <type name="Magento\Catalog\Block\Product\ProductList\Toolbar">
        <plugin name="catalog_productlist_toolbar_plugin" type="Vendor\ModuleName\Plugin\Product\ProductList\Toolbar" />
    </type>
</config>

Step 2: Create Config.php file under app/code/Vendor/ModuleName/Plugin directory and write below code.

<?php
namespace Vendor\ModuleName\Plugin;

class Config
{
    public function afterGetAttributeUsedForSortByArray(\Magento\Catalog\Model\Config $catalogConfig, $options)
    {
        $customOption['latest'] = __("Latest Product");
        $options = array_merge($options,$customOption);

        return $options;
    }
}

This will add a new sorting field.

Step 3: Create Toolbar.php file under Vendor\ModuleName\Plugin\Product\ProductList directory and write below code.

<?php
namespace Vendor\ModuleName\Plugin\Product\ProductList;

class Toolbar
{
    public function aroundSetCollection(
        \Magento\Catalog\Block\Product\ProductList\Toolbar $subject,
        \Closure $proceed,
        $collection
    ) {
        $currentOrder = $subject->getCurrentOrder();
        if ($currentOrder == "latest ) {
            $dir = $subject->getCurrentDirection();
            $collection->getSelect()->order('created_at '.$dir); // you can add filter as per your requirement.
        }
        return $proceed($collection);
    }
}