Magento – Magento 2 : Set free shipping method programatically from an observer

event-observermagento2shipping-methods

I need to add free shipping method fro particular quote in an observer.
I am calling an event sales_quote_collect_totals_before.

And my observer code is –

namespace Vendor\Module\Observer;

use Magento\Framework\Event\Observer as EventObserver;
use Magento\Framework\Event\ObserverInterface;

class SalesQuoteCollectTotalsBefore implements ObserverInterface
{
    public function execute(EventObserver $observer)
    { 
        $quote = $observer->getEvent()->getQuote();
        $address = $quote->getShippingAddress();
        $address->setFreeShipping(true);   
    }
}

Best Answer

Use this code in your observer :

$quote = $observer->getEvent()->getQuote();
$quote->getShippingAddress()->setFreeShipping(true);
$quote->save();

It may be helpful for you.

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Magento 2 – Set Custom Price of Product When Adding to Cart Code Not Working

Please use this even checkout_cart_product_add_after, and also I suggest you that

ObserverInterface has only one method which is execute, so write your code in this method.

And do not use parent Item because while you are adding to cart any item then price depend upon child item so the best way is to use directly that item object that you are getting. So best practice is to use that item itself.

And also return $this object at the end of your code inside execute method.

For eg: namespace Navin\Testcart\Observer;

use Magento\Framework\Event\ObserverInterface;
use Magento\Framework\App\RequestInterface;

class CustomPrice implements ObserverInterface
{
    public function execute(\Magento\Framework\Event\Observer $observer) {

        $item=$observer->getEvent()->getData('quote_item');
        $product=$observer->getEvent()->getData('product');
        // here i am using item's product final price
        $price = $item->getProduct()->getFinalPrice()+10; // 10 is custom price. It will increase in product price.
        // Set the custom price
        $item->setCustomPrice($price);
        $item->setOriginalCustomPrice($price);
        // Enable super mode on the product.
        $item->getProduct()->setIsSuperMode(true);
        return $this;
    }

}

Hope this will help you. :)

Magento 2 – Sending Emails Triggered by Observer

I was having problems with $transportBuilder on __construct() and I removed all var/generation/* and compiled again and worked.

rm -rf [MAGENTO_PATH]/var/generation/*

Best Answer

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Magento 2 – Set Custom Price of Product When Adding to Cart Code Not Working

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