Get Shipping Methods via observer

Question

What event do I need to observe to see what shipping methods are available for a given quote

Answer 1

You can listen to the "sales_quote_save_after" event, then use the quote to get the shipping rates. The following code can be used to get the list of shipping rates.

$quote->getShippingAddress()->getGroupedAllShippingRates();

Answer 2

There are lot of event.But i cannot find any proper event.

checkout_cart_save_after
sales_quote_collect_totals_after
sales_quote_collect_totals_after

etc

checkout_cart_save_after and sales_quote_collect_totals_after better because it trigger always whenever you have done any changes.

but you get list of available shipping methods.then we need some code at observer

   $quoteShippingAddress = $quote->getShippingAddress();
        if (!is_null($quoteShippingAddress->getId())) {



        try {
            $quoteShippingAddress->collectShippingRates()->save();
            $groupedRates = $quoteShippingAddress->getGroupedAllShippingRates();

            $ratesResult = array();
            foreach ($groupedRates as $carrierCode => $rates ) {
                $carrierName = $carrierCode;
                if (!is_null(Mage::getStoreConfig('carriers/'.$carrierCode.'/title'))) {
                    $carrierName = Mage::getStoreConfig('carriers/'.$carrierCode.'/title');
                }

                foreach ($rates as $rate) {

                    $ratesResult[] =  $rate;

                }
            }
        } catch (Mage_Core_Exception $e) {
             $e->getMessage();
        }
 }
         $ratesResult; 

Here $result give of shipping method