Disabling A Category

When a category is created whilst in a store scope, and a value is set against an attribute which has is_required set to false, and has a scope more specific than global, then a value is not set against the global scope, resulting in the sto...

Potentially confusing due to the 3 methods you could use, all of which are in Mage_Catalog_Model_Product:

public function getUrlPath($category=null)
public function getUrlInStore($params = array())
public function getProductUrl($use...

public function getCategoryImage(Mage_Catalog_Model_Category $category, $width = 250, $height = 250)
{
    // return when no image exists
    if (!$category->getImage()) {
        return false;
    }

    // return when...

This snippet provides a collection of products within a category

$cat = Mage::getModel('catalog/category')->load(1);

$coll = Mage::getResourceModel('catalog/product_collection');
$coll->addCategoryFilter($cat);

![](http://mikewhitby...

Doing this is a slight pain, to quote what Alan Storm said on StackOverflow:

1. If you add your handle before you call $this->loadLayout() from a controll...

Handy to add attributes to sales_flat_order:

$installer->getConnection()->addColumn(
    $this->getTable('sales/order'),
    'some_attribute',
    [
        'type' => Varien_Db_Ddl_Table::TYPE_INTEGER,
        'length' => ...

Only a core set of attributes are added to the product collection (for the list page) by default. This bit of XML will allow you to add additional attributes to that collection:

<config>
    <frontend>
        <product>
          ...

This is creating a module which will update categories to include new attributes.

1. inside app/etc/modules/yourmodule.xml put the following:

    <?xml version="1.0"?>
    <config>
        <modules>
            <Yourmodule_Sql>...
   

Often, you'll want to add a column to a collection used in a grid, and to do so you'd use _prepareCollection():

protected function _prepareCollection()
{
    $collection = Mage::getResourceModel($this->_getCollectionClass());
  ...

Magento has a Datetime backend model but formats a Zend_Date object without the time. So if you want to store datetime (actually with time) you will need to setup your own backend model.

Here is how i've done it:

class Namespace_Module_Mod...