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I have my custom module Pricebycustomergroup i have created a rule where a specific product price will be decreased like orignal is 34$ and the new one will be 20$ but this will works if max quantity is 2 in cart..

I wanted to create graphql APIs for this now what i do is i use AfterGetPrice Plugin

public function afterGetPrice(Product $subject, $result) { if ($this->state->getAreaCode() === Area::AREA_WEBAPI_REST || $this->state->getAreaCode() === Area::AREA_GRAPHQL) { //my code here } return $result; }

It is working fine but the issue is quantity logic failed like what i did is for quantity greater than 2 for that specific product logic not working because it will always return the same price every time.. another option is i can use cart here but what in case of guest cart ?

Please help Thanks in advance !!

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I'm not sure why you're handling this through code when you can achieve the same functionality using cart price rules.

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But if you still want to do by code then create a custom module using an Observer observer for the event sales_quote_collect_totals_after

<?php namespace Vendor\PriceByCustomerGroup\Observer; use Magento\Framework\Event\Observer; use Magento\Framework\Event\ObserverInterface; use Magento\Quote\Model\Quote\Item; class AdjustCartPrice implements ObserverInterface { public function execute(Observer $observer) { $quote = $observer->getQuote(); foreach ($quote->getAllItems() as $item) { if ($item->getProduct()->getId() == YOUR_PRODUCT_ID) { $qty = $item->getQty(); if ($qty <= 2) { $item->setCustomPrice(20); // Set your custom price $item->setOriginalCustomPrice(20); // Retain the original custom price $item->getProduct()->setIsSuperMode(true); // Prevent overwriting the custom price } } } } }
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