1. Using magento system log.
2. Using magento template path hints & block name hints.
3. You can also use getData() function to check data in object class, this helped me a lot.
4. In case of database issues you can use getSelect() function, this is very useful function as this will output the result sql generated after using the addFieldToFilter() on collection.
5. PHP 5 also provide try catch block, developers can try script with it for exceptions.
6. Last but not the least very useful var_dump.

1. Folder structure will be:
\app\code\local\Avi\Mymodule\controllers
\app\code\local\Avi\Mymodule\controllers\CartController.php
\app\code\local\Avi\Mymodule\controllers\IndexController.php
\app\code\local\Avi\Mymodule\controllers\MultishippingController.php
\app\code\local\Avi\Mymodule\controllers\OnepageController.php
\app\code\local\Avi\Mymodule\controllers\Multishipping\AddressController.php
\app\code\local\Avi\Mymodule\etc\config.xml

2. Create file app\etc\modules\Avi_Mymodule.xml

<config>
<modules>
<Avi_Mymodule>
<active>true</active>
<codePool>local</codePool>
</Avi_Mymodule>
</modules>
</config>

3. Create \app\code\local\Avi\Mymodule\etc\config.xml

<?xml version=”1.0″ encoding=”utf-8″?>
<config>
<modules>
<Avi_Mymodule>
<version>0.1.0</version>
</Avi_Mymodule>
</modules>

<frontend>
<routers>
<checkout>
<use>standard</use>
<args>
<module before=”Mage_Checkout”>Avi_Mymodule</module>
<frontName>mymodule</frontName>
</args>
</checkout>
</routers>
</frontend>
</config>

4. Rename all the \app\code\local\Avi\Mymodule\controllers to derive from the core class.Content of \app\code\local\Avi\Mymodule\controllers\MultishippingController.php Following code only override the index action.

include_once(“Mage/Checkout/controllers/MultishippingController.php”);
class Avi_Mymodule_MultishippingController extends Mage_Checkout_MultishippingController
{

/**
* Index action of Multishipping checkout
*/
public function indexAction()
{
if (!$this->_getCheckout()->getCustomerDefaultShippingAddress()) {
$multi_mag = ‘Multiple address checkout requires at least one address on file, please <a href=”/mag151/customer/address/”>click here</a> to add an address to your account.’;
Mage::getSingleton(‘checkout/session’)->addError($this->__($multi_mag));
}
$this->_getCheckoutSession()->setCartWasUpdated(false);
$this->_redirect(‘*/*/addresses’);

}

}

Content of \app\code\local\Avi\Mymodule\controllers\Multishipping \AddressController.php

include_once(“Mage/Checkout/controllers/Multishipping/AddressController.php”);

class Avi_Mymodule_Multishipping_AddressController extends Mage_Checkout_Multishipping_AddressController
{
…
…
…

}

Content of \app\code\local\Avi\Mymodule\controllers\IndexController.php

include_once(“Mage/Checkout/controllers/IndexController.php”);
class Avi_Mymodule_IndexController extends Mage_Checkout_IndexController
{
…
…
…
}

Content of \app\code\local\Avi\Mymodule\controllers\OnepageController.php

include_once(“Mage/Checkout/controllers/OnepageController.php”);
class Avi_Mymodule_OnepageController extends Mage_Checkout_OnepageController
{
…
…
…
}

Content of \app\code\local\Avi\Mymodule\controllers\CartController.php

include_once(“Mage/Checkout/controllers/CartController.php”);
class Avi_Mymodule_CartController extends Mage_Checkout_CartController
{
…
…
…
}

When you have design elements like below

<table border=”0″ cellspacing=”0″ cellpadding=”0″>
<tr>
<td><img src=”" alt=”image981_01″ /><img src=”" alt=”image981_02″ /><img src=”" alt=”image981_03″ /></td>
</tr>
</table>
Internet explorer 7 shows space around images even when you set margin, padding,border,white-space attributes.

The real trick to get rid of the space is for set hspace attribute and it should do the job for you.

<table border=”0″ cellspacing=”0″ cellpadding=”0″>
<tr>
<td><img hspace=”0″ src=”" alt=”image981_01″ /><img src=”" alt=”image981_02″ /><img src=”" alt=”image981_02″ /></td>
</tr>
</table>

All following features in one template, how does it feel?

• DHTMLX Powered Magento Category Navigation’s (AJAX based)

Following is the preview for final output:

• AJAX Based Magento cart products add with Upsell Products

Following is the preview for final output:

• Magento Custom search
  Following is the preview for final output:
• Magento Custom Menu
• JQuery Magento Home page tab Control
  Following is the preview for final output:
  
  
• JQuery Magento commerce front page product spot light
  Following is the preview for final output:
• Home page product preview float
  Following is the preview for final output:
• AJAX power Login
• Shopping Cart Display AJAX based
• Tag cloud in flash
  Following is the preview for final output:
• Magento order management Magento checkout page

work in progress.. View Magento theme demo to get idea !

Are you thinking of making your online store, more attractive, user friendly, full of features?

I have something to share with you. Following is demo design developed starting from free template to completely new look and feel.

Magento 1.5.1 RC1 powered

LRY SOFT deal with different application development like E-commerce, Document Management applications, Content Management Systems, which includes:

• Linux
• Apache
• Mysql
• PHP

• L = Linux operating system
• A = Apache web server
• M = Mysql database
• P = PHP/Python/Perl scripting languages

#  Model-View Controller

So LRY SOFT moved itself into Free OSCommerce application development integration, customization, development of new features in OSCommerce & working with the open source contributions and osc template.