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An event is triggered before sending order notes in service Salesforce.

Mage::dispatchEvent('tnw_salesforce_order_notes_send_before', array('data' => $_data));

How to use this event:

Several steps are involved into utilizing this event:

config.xml
1. a listener should be added for this event
2. a listener should point to a Magento Observer module and a method in that observer
Magento Observer
1. holds a method where you can add your custom logic

<?xml version="1.0"?>
<config>
    <global>
        <events>
            <tnw_salesforce_order_notes_send_before>
                <observers>
                    <tnw_salesforce_order_notes_send_before>
                        <class>tnw_salesforce/observer</class>
                        <method>orderNotesSendBefore</method>
                    </tnw_salesforce_order_notes_send_before>
                </observers>
            </tnw_salesforce_order_notes_send_before>
        </events>
    </global>
</config>

<?php

/**
 * Class TNW_Salesforce_Model_Observer
 */
class TNW_Salesforce_Model_Observer
{
 
    public function orderNotesSendBefore(Varien_Event_Observer $observer) {
		/**
		 * Array of Salesforce objects
		 * @var stdClass[] $_data 
		 * 
		 * Example:
		 * array (size=1)
		 *   310 => // 310 - Magento order status history ID
		 *     object(stdClass)[529]
		 *       public 'ParentId' => string '80124000001479HAAQ' (length=18)
		 *       public 'IsPrivate' => int 0
		 *       public 'Body' => string 'Test comment' (length=12)
		 *       public 'Title' => string 'Test comment' (length=12)
		 */
		$_data = $observer->getData('data');

		// Your custom code
    }
 
}

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