Magento - Unable to set order of collection

Question

This doesn't seem to be ordered correctly, anything I'm doing wrong? Suggestions?

$componentQuantityCollection = Mage::getModel('catalog/product')->getCollection();
$componentQuantityCollection->joinField('qty',
    'cataloginventory/stock_item',
    'qty',
    'product_id=entity_id',
    '{{table}}.stock_id=1',
    'left');
$componentQuantityCollection->addAttributeToFilter('sku', array('in' => $componentSkus))->setOrder('sku','ASC');

Another collection that doesn't seem to be sorted which is different than the first:

$kitCollection = Mage::getModel('kitinventory/kitinventory')->getCollection()->addFieldToFilter('kit_sku', $sku)->setOrder('related_sku', 'DESC');

Answer 1

EAV collections work with attributes, the sorting method is a little different here as well

$componentQuantityCollection->addAttributeToSort('sku', 'ASC');

For non-EAV collections use one of the following methods

$kitCollection->getSelect()->order('related_sku DESC');
$kitCollection->setOrder('related_sku', 'DESC');

Answer 2

You can add sort order like this:

$kitCollection->getSelect()->order('related_sku DESC');

More information: http://www.magentocommerce.com/wiki/1_-_installation_and_configuration/using_collections_in_magento

Hope can help you.

Answer 3

To expand on the other answers here, $kitCollection->getSelect()->order('column DESC') works fine, but you can't add more than one column. For instance, $kitCollection->getSelect()->order('column DESC, column2 ASC') will error. This is because of the work that Magento does to escape the column names. To get around this, you can use a Zend_Db_Expr like so:

$kitCollection->getSelect()->order(new Zend_Db_Expr('related_sku DESC, column2 ASC'));

Answer 4

easymoden00b,setOrder() is not working due Eav structure on product.As @Sande say to use addAttributeToSort()function,because of

• Magento is join multiple tables for product collection.

• Attribute alias name at collection

• setOrder() function is working when it order expression Fieldname,SortOrder is correct.

You can see,how magento is create field alias and it relate eav table attribute at class Mage_Eav_Model_Entity_Collection_Abstract

public function addAttributeToSort($attribute, $dir = self::SORT_ORDER_ASC)
{
    if (isset($this->_joinFields[$attribute])) {
        $this->getSelect()->order($this->_getAttributeFieldName($attribute).' '.$dir);
        return $this;
    }
    if (isset($this->_staticFields[$attribute])) {
        $this->getSelect()->order("e.{$attribute} {$dir}");
        return $this;
    }
    if (isset($this->_joinAttributes[$attribute])) {
        $attrInstance = $this->_joinAttributes[$attribute]['attribute'];
        $entityField = $this->_getAttributeTableAlias($attribute) . '.' . $attrInstance->getAttributeCode();
    } else {
        $attrInstance = $this->getEntity()->getAttribute($attribute);
        $entityField = 'e.' . $attribute;
    }

    if ($attrInstance) {
        if ($attrInstance->getBackend()->isStatic()) {
            $orderExpr = $entityField;
        } else {
            $this->_addAttributeJoin($attribute, 'left');
            if (isset($this->_joinAttributes[$attribute])||isset($this->_joinFields[$attribute])) {
                $orderExpr = $attribute;
            } else {
                $orderExpr = $this->_getAttributeTableAlias($attribute).'.value';
            }
        }

        if (in_array($attrInstance->getFrontendClass(), $this->_castToIntMap)) {
            $orderExpr = Mage::getResourceHelper('eav')->getCastToIntExpression(
                $this->_prepareOrderExpression($orderExpr)
            );
        }

        $orderExpr .= ' ' . $dir;
        $this->getSelect()->order($orderExpr);
    }
    return $this;
}

Answer 5

Here is my solution for sorting the order of options in a configurable product's attribute. Start by copying Collection.php,

app/code/core/Mage/Catalog/Model/Resource/Product/Type/Configurable/Attribute/Collection.php to app/code/local/Mage/Catalog/Model/Resource/Product/Type/Configurable/Attribute/Collection.php.

Then you can find this code:

foreach ($this->getProduct()->getTypeInstance(true)->getUsedProducts(array($productAttribute->getAttributeCode()), $this->getProduct()) as $associatedProduct) {

And replace it with this code:

$assProds = $this->getProduct()->getTypeInstance(true)->getUsedProducts(array($productAttribute->getAttributeCode()), $this->getProduct());
sort($assProds);
foreach ($assProds as $associatedProduct) {

This will allow you to sort the drop-down list of attribute options to alphabetical. You can also reverse the order by using array_reverse() or similar functions.

Previously, my attribute options were in reverse alphabetical order. Now, they're in alphabetical order.