Magento – how to implement add to cart functionality on custom module

magento-1.7

I am new in magento. I have made a custom module of price calculator in which a user enter the height and width of a product and it gets its price.
I want to implement add to cart functionality so that height,width and price goes to cart. But i don't know the code and syntax to implement it.

Cart functionality is already installed on my project.

This is controller

class Test_Mymodule_IndexController extends Mage_Core_Controller_Front_Action 
{
    public function indexAction() 
    { 
         $this->loadLayout(); 
         $this->renderLayout(); 
    }

    public function calculateAction()
    {
        $request = $this->getRequest();
        $printdata = $request->getPost();

        if($this->getRequest()->isPost()) 
         {
             $obj = Mage::getModel("test_mymodule/results");

             $show_results = $obj->showshuttersprice($printdata['width'],$printdata['height']);

         }



         Mage::register('data', $show_results);// In the Controller

         Mage::register('width', $printdata['width']);// In the Controller

         Mage::register('height', $printdata['height']);// In the Controller


            $this->loadLayout();
            $this->renderLayout();           

    } 
}

This is my view in which i want to implement add to cart

<?php 
 $data = Mage::registry('data');// In the View;

 $width = Mage::registry('width');// In the View;   

 $height = Mage::registry('height');// In the View;     

if($data == "0" || $data == "NULL" || $data == "")
{
    echo "Sorry, Product is Unavailable";
}
else
{ 
?>

<h6 align="center">Price Results for <?php echo $width; ?> mm by <?php echo $height; ?> mm Domestic Rollershutter</h6>
     <table border="1" align="center" width="100%" cellspacing="4" cellpadding="4">
           <tr>
               <td>Price</td> <td><?php echo "$"." ".$data; ?></td>
           </tr>

       </table>      



<?php
}
?>
<br />
<a href ="">Add to cart</a>

Any body help me…

Best Answer

There are two options.

Adding via Query string

http://www.magentocommerce.com/wiki/4_-_themes_and_template_customization/catalog/adding_a_product_to_the_cart_via_querystring

/path/to/magento/checkout/cart/add?product=$id&qty=$qty&options[$id]=$value

Adding via code

https://stackoverflow.com/questions/13698236/add-product-to-cart-with-custom-options

Related Solutions

Magento – How to add CSV Import/Export Functionality

For a CSV exports you can generate a grid with your data and use the getCsv() function. Sounds overhead, but that's exactly what the export of the Tablerates shipping cost table in the backend does.

See: Mage_Adminhtml_System_ConfigController::exportTableratesAction and Mage_Adminhtml_Block_Shipping_Carrier_Tablerate_Grid.

For the import you could also have a look at this module (Mage_Shipping_Model_Resource_Carrier_Tablerate::uploadAndImport) or on the import module for product data (Mage_ImportExport), but this is much more complicated.

Magento – Add custom module Tab(gird) in admin Dashboard

The tabs are added in Mage_Adminhtml_Block_Dashboard_Grids::_prepareLayout.
Here is how a tab structure looks like:

$this->addTab('reviewed_products', array(
        'label'     => $this->__('Most Viewed Products'), //label
        'url'       => $this->getUrl('*/*/productsViewed', array('_current'=>true)), //url that returns the content
        'class'     => 'ajax' //marker that the content is requested through ajax.
    ));

You can add tab that does not retrieve data through ajax.

$this->addTab('ordered_products', array(
        'label'     => $this->__('Bestsellers'), //label
        'content'   => $this->getLayout()->createBlock('adminhtml/dashboard_tab_products_ordered')->toHtml(), //tab content
        'active'    => true //mark this as the active tab
    ));

What you can do is to override the method above and add your own tabs (content or ajax).
[EDIT]
Here is how you can override a block And in your new block do this:

protected function _prepareLayout(){
    parent::_prepareLayout();//add original tabs
    $this->addTab('custom', array(
        'label'     => $this->__('Custom'), //label
        'url'       => $this->getUrl('*/controller/action', array('_current'=>true)), //url that returns the content
        'class'     => 'ajax' //marker that the content is requested through ajax.
    ));
    //or 
    $this->addTab('other_tab', array(
        'label'     => $this->__('Some label'), //label
        'content'   => $this->getLayout()->createBlock('custom/block_name')->toHtml(), //tab content
    ));
    return $this;
}

[Second degree edit]
Here is a small sample module that does this. Let's call it Easylife_Test.
app/etc/modules/Easylife_Test.xml - the declaration file

<?xml version="1.0"?>
<config>
    <modules>
        <Easylife_Test>
            <active>true</active>
            <codePool>local</codePool>
            <depends>
                <Mage_Adminhtml />
            </depends>
        </Easylife_Test>
    </modules>
</config>

app/code/local/Easylife/Test/etc/config.xml - the configuration file

<?xml version="1.0"?>
<config>
    <modules>
        <Easylive_Test>
            <version>0.0.1</version>
        </Easylive_Test>
    </modules>
    <global>
        <blocks>
            <adminhtml>
                <rewrite>
                    <dashboard_grids>Easylife_Test_Block_Adminhtml_Dashboard_Grids</dashboard_grids>
                </rewrite>
            </adminhtml>
        </blocks>
    </global>
</config>

app/code/local/Easylife/Test/Block/Adminhtml/Dashboard/Grids.php - the new block

<?php
class Easylife_Test_Block_Adminhtml_Dashboard_Grids extends Mage_Adminhtml_Block_Dashboard_Grids{
    protected function _prepareLayout(){
        parent::_prepareLayout();
        $this->addTab('custom', array(
            'label'     => $this->__('Custom tab'),
            'content'   => 'content here',
        ));
    }
}