Magento2 : How to override any product custom option price sorting in list page

Question

I have one simple product it's price zero(0). it has a custom option with name and price like:

-------------------------
   Name           Price
-------------------------
 product A         10

 product B         00

 product C         30

 product D         20

by default price sort is working like 0,10,20,30. But i want to sort start from 10,20,30 while any custom product has 0 price.

Please check image.

thanks

Answer 1

This can be done using Plugin

Create the following files in your module: (Assuming you have your own module registered already)

Create your Plugin under Vendor/Modulename/etc/di.xml

di.xml

<?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="Vendor_Modulename::addCustomOptions" type="Vendor\Modulename\Plugin\Model\Config" />
</type>
<type name="Magento\Catalog\Block\Product\ProductList\Toolbar">
    <plugin name="Vendor::addPriceDescendingFilterInToolbar" type="Vendor\Modulename\Plugin\Product\ProductList\Toolbar" />
</type>

Then create a config.php under namespace Vendor/Modulename/Plugin/Model/Config.php

and put this code:

<?php

namespace Vendor\Modulename\Plugin\Model;

use Magento\Store\Model\StoreManagerInterface;

class Config  {


protected $_storeManager;

public function __construct(
    StoreManagerInterface $storeManager
) {
    $this->_storeManager = $storeManager;
}


public function afterGetAttributeUsedForSortByArray(\Magento\Catalog\Model\Config $catalogConfig, $options)
{
    $store = $this->_storeManager->getStore();
    $currencySymbol = $store->getCurrentCurrency()->getCurrencySymbol();

    // Remove specific default sorting options
    $default_options = [];
    $default_options['name'] = $options['name'];

    //New sorting options
    $customOption['price_pcs'] = __( ' Price customSorting' );

    //Merge default sorting options with custom options
    $options = array_merge($customOption, $options);

    return $options;
}
}

Then override the Toolbar.php ***Vendor/Modulename/Plugin/Product/ProductList/Toolbar.php

use this 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();
    $result = $proceed($collection);

    if ($currentOrder) {
        if ($currentOrder == 'price_pcs') {
            $subject->getCollection()->setOrder('(price = 0, price)', 'asc');
        }
    }


    return $result;
}
}