Magento V1.9 在事件观察器中的 sales_flat_quote_item 更新后超时运行

Question

I try to save additional information (from third-party-system) to sales_flat_quote_item db in Magento V1.9. The observer works fine.

The data which should be updated, were updated, but everytime it ends in an "Internal Server Error 500", even if I add a die() after the $quoteItem->save();

There is no timeout when I comment $quoteItem->save(); out <- But then nothing was saved

config.xml

<events>
    <sales_quote_item_save_commit_after>
        <observers>
            <MyCompany_MyProject_salesQuoteItemSaveCommitAfter>
                <type>singleton</type>
                <class>MyCompany_MyProject_Model_Observer</class>
                <method>salesQuoteItemSaveCommitAfter</method>
            </MyCompany_MyProject_salesQuoteItemSaveCommitAfter>
        </observers>
    </sales_quote_item_save_commit_after>
</events>

Observer.php

/**
     * @param Varien_Event_Observer $observer
     */
    public function salesQuoteItemSaveCommitAfter($observer)
    {
        //var_dump($post); die();

        $quoteItem = $observer->getEvent()->getItem();
        //var_dump($quoteItem->getId()); echo die();

        if (!$quoteItem->getId()) {
            //quote not saved in the database
            return $this;
        }
        //var_dump($quoteItem->getId()); die();

        $quoteItem->setPriceInclTax($post['my_custom_price']);
        $quoteItem->save();
        
        return $this;
    }

Answer 1

Yes exactly,

The event sales_quote_item_save_commit_after is launched after each recording of the quote entity, here in the code when the $quoteItem->save(); is launched, just after the observer is restarted and so on : which creates an infinite loop.

In this case you can instead use the sales_quote_item_save_before event or perform a check to verify that the PriceInclTax field has been recorded.