Magento – admin sales order total shipment empty

So I came up with a solution that works just awesome. I added another controller action and a model to do the Magento Interactions during my ajax calls. So let me show you how it's done, I hope somebody can profit from this sooner or later :)

My new Action:

public function updateAction ()
   {

      //Instantiate Product Model
      $productModel = Mage::getModel('doorconfig/product');

      //Get Updated Values from the Model
      $currentProduct = $productModel->getProduct($_POST);
      $currentProductId = $currentProduct->getId();
      $currentProductUrl = $currentProduct->getProductUrl();
      $currentPrice = $productModel->getPrice($currentProductId);
      $currentType = $this->getRequest()->getPost('doorconfig_type');
      $currentSize = $this->getRequest()->getPost('doorconfig_size');
      $currentProductBaseImgUrl = $productModel->getDoorBaseImgUrl($currentType,$currentSize);

      //Populate Resultarray
      $result = array("currentProductId"=>$currentProductId,"currentPrice"=>$currentPrice,"currentProductUrl"=>$currentProductUrl,"currentProductBaseImgUrl"=>$currentProductBaseImgUrl);

      //Encode Result in JSON
      $this->getResponse()->setBody(Mage::helper('core')->jsonEncode($result));

      return $result;
   }

My model just got most of the business logic from my block, so nothing special to point out about that.

And finally the updated Ajax section which now triggers my new controller action, receives the result as a JSON encode and changes the values in the DOM:

<script type="text/javascript">

   var $price = "";
   var $baseImgUrl = "";
   var $productUrl = "";
   var $productId = "";
   var $f = $j("#attributeform");
    var $formData;
    var $currentStoreUrl = "<?php echo $currentStoreUrl ?>";

   function ajaxUpdate()
   {

      $j.ajax({
         url: "/doorconfig/index/update",
         type: "POST",
         data: $formData,
         dataType: "json",
         success: function(data) 
                {
                  $productId = data.currentProductId;
                  $price = data.currentPrice;
                  $baseImgUrl = data.currentProductBaseImgUrl;
                  $productUrl = data.currentProductUrl;
                     $j("#result").text($price);

                     $j("#addtocart").attr('href',  $currentStoreUrl + "checkout/cart/add?product=" + $productId + "&qty=1");
                     $j("#productimg").attr('src', $baseImgUrl);

                     console.log(data);

                   },
            error: function(error)
                  {
                     console.log("Error:");
                     console.log(error);
                     alert("ERROR");
                  }
        });
    };

   $j(document).ready(function() 
   {

      $j("#result").text('<?php echo $defaultProductPrice; ?>');
      $j("#addtocart").attr('href', '<?php  echo $currentStoreUrl . "checkout/cart/add?product=" . $defaultProductId . "&qty=1" ?>');
      $j("#moreinfo").attr('href', '<?php echo $defaultProductUrl; ?>');
      $j("#productimg").attr('src', '<?php echo $defaultProductImgUrl; ?>');
      $j("#attributeform")[0].reset();

      $j("form[name=attributeform]").change(function () 
      {

         $formData = $f.serialize();
         ajaxUpdate();
      })
   });   

</script>

If you need any further explanation or wanna improve something please comment :)

So the answer is that it should not be an observed event. Here is how I got it to work, in the config.xml I needed to update the adminhtml node.

<?xml version="1.0" encoding="utf-8"?>
<config>
  <modules>
    <Wsu_NewtworkSecurities>
      <version>0.1.0</version>
    </Wsu_NewtworkSecurities>
  </modules>
  <adminhtml>
    <layout>
      <updates>
        <wsu_newtworksecurities>
          <file>newtworksecurities.xml</file>
        </wsu_newtworksecurities>
      </updates>
    </layout>
  </adminhtml>
</config>

and in

app\design\adminhtml\default\default\layout\wsu\newtworksecurities.xml

<?xml version="1.0"?>
<layout version="0.1.0">
    <feildset>
        <reference name="head">
            <action method="addJs">
                <script>wsu/newtworksecurities/newtworksecurities.js</script>
            </action>
        </reference>
    </feildset>

    <adminhtml_index_login>
        <update handle="feildset" />
        <reference name="form.additional.info">
            <block type="wsu_newtworksecurities/feildset" name="newtworksecurities.feildset"
                   template="wsu/newtworksecurities/feildset.phtml" />
        </reference>
    </adminhtml_index_login>

    <wsu_newtworksecurities_error_index>
        <reference name="content">
            <block type="core/template" name="newtworksecurities.error" template="wsu/newtworksecurities/error.phtml"/>
        </reference>
    </wsu_newtworksecurities_error_index>

</layout>