Is there any way to modify this tracking.phtml on magento admin? - magento

Question

When we choose one of the option below, the field 'title' automatically filled with selected value from carrier options.
I want to do the same for 'number' field, it would be filled with something when I choose my custom carrier. Is there any way to modify this tracking form? If yes, how?
Thank's in advance

Answer 1

Add following observer in your module's config.xml
<events>
<adminhtml_block_html_before>
<observers>
<add_script_on_shipment>
<class>yourmodule/observer</class>
<method>addScript</method>
</add_script_on_shipment>
</observers>
</adminhtml_block_html_before>
</events>
Put following code in Observer.php
public function addScript($observer) {
$block = $observer->getEvent()->getBlock();
if (($block instanceof Mage_Adminhtml_Block_Sales_Order_Shipment_View_Tracking) && $block->getType() != 'core/template' /*&& is your carrier active*/) {
$shipment = $block->getShipment();
$_child = clone $block;
$_child->setType('core/template');
$block->setChild('calling_block', $_child);
$block->setTemplate('yourmodule/custom_script.phtml');
}
}
add following code with required modifications in custom_script.phtml
<?php echo $this->getChildHtml('calling_block');?>
<script type="text/javascript">
/*your custom javascript code to bind onchange event*/
</script>

Answer 2

Look in the file app/design/adminhtml/default/default/layout/sales.xml, tracking.phtml is used several times. If this change is for a module then create a layout file 'yourmodule.xml' and enable it from your config file. Otherwise name it 'local.xml'. It's contents will have to be an update something like this:
<?xml version="1.0"?>
<layout>
<adminhtml_sales_order_shipment_new>
<reference name="shipment_tracking">
<action method="setTemplate">
<template>your/new/tracking.phtml</template>
</action>
</reference>
</adminhtml_sales_order_shipment_new>
</layout>
Also if you want to minimize number of copypasted layout statements you can use
<update handle="handle_name" /> inside different controller action handles. For example:
<my_handle_name>
<reference name="shipment_tracking">
<action method="setTemplate">
<template>your/new/tracking.phtml</template>
</action>
</reference>
</my_handle_name>
<adminhtml_sales_order_shipment_new>
<update handle="my_handle_name"/>
</adminhtml_sales_order_shipment_new>