Programmatically: How to create custom Magento product grids

Step 1: Create a new PHP file

Create a new file in the app/code/local/[YourCompany]/[YourModule]/Block directory, e.g., MyGrid.php. In this example, I'll use MyGrid as the filename.

Step 2: Define the grid class

In MyGrid.php, define the class that extends Mage_Adminhtml_Block_Widget_Grid:

	
	class MyCompany_MyModule_Block_Adminhtml_Mygrid extends Mage_Adminhtml_Block_Widget_Grid
{
    public function __construct()
    {
        parent::__construct();
        $this->setId('mygrid');
        $this->setDefaultSort('name');
        $this->setDefaultDir('ASC');
        $this->setSaveParametersInSession(true);
    }
}
	

Step 3: Define the grid columns

Add a method to define the grid columns:

	public function getColumns()
{
    return array(
        'name' => array(
            'header' => Mage::helper('mymodule')->__('Product Name'),
            'index' => 'name',
            'type' => 'text',
        ),
        'price' => array(
            'header' => Mage::helper('mymodule')->__('Price'),
            'index' => 'price',
            'type' => 'price',
        ),
    );
}
	

Step 4: Define the grid collection

Add a method to define the grid collection:

	public function getCollection()
{
    $collection = Mage::getModel('catalog/product')->getCollection();
    $collection->addAttributeToSelect(array('name', 'price'));
    return $collection;
}
	

Step 5: Include the grid in your module

Add a method to include your custom grid in your module's configuration file (config.xml):

	
    
        MyCompany_MyModule_Block
    
	
	

And in your module's layout XML file (layout.xml):

Step 6: Create a grid template

Create a new file in the app/design/adminhtml/default/template/mycompany/mymodule/ directory, e.g., grid.phtml. This is where you'll render your grid:

	
	echo $this->getGridHtml();