您希望做的是创建自定义属性类型。
首先,可以通过创建安装程序脚本(此操作会更新数据库)来完成此操作。
startSetup();
$installer->addAttribute('catalog_product', 'product_type', array(
'group' => 'Product Options',
'label' => 'Product Type',
'note' => '',
'type' => 'dec', //backend_type
'input' => 'select', //frontend_input
'frontend_class' => '',
'source' => 'sourcetype/attribute_source_type',
'backend' => '',
'frontend' => '',
'global' => Mage_Catalog_Model_Resource_Eav_Attribute::SCOPE_WEBSITE,
'required' => true,
'visible_on_front' => false,
'apply_to' => 'simple',
'is_configurable' => false,
'used_in_product_listing' => false,
'sort_order' => 5,
));
$installer->endSetup();
接下来您需要创建一个名为:
Whatever_Sourcetype_Model_Attribute_Source_Type
的自定义php类,并将以下内容粘贴到其中:
class Whatever_Sourcetype_Model_Attribute_Source_Type extends Mage_Eav_Model_Entity_Attribute_Source_Abstract
{
const MAIN = 1;
const OTHER = 2;
public function getAllOptions()
{
if (is_null($this->_options)) {
$this->_options = array(
array(
'label' => Mage::helper('sourcetype')->__('Main Product'),
'value' => self::MAIN
),
array(
'label' => Mage::helper('sourcetype')->__('Other Product'),
'value' => self::OTHER
),
);
}
return $this->_options;
}
public function toOptionArray()
{
return $this->getAllOptions();
}
public function addValueSortToCollection($collection, $dir = 'asc')
{
$adminStore = Mage_Core_Model_App::ADMIN_STORE_ID;
$valueTable1 = $this->getAttribute()->getAttributeCode() . '_t1';
$valueTable2 = $this->getAttribute()->getAttributeCode() . '_t2';
$collection->getSelect()->joinLeft(
array($valueTable1 => $this->getAttribute()->getBackend()->getTable()),
"`e`.`entity_id`=`{$valueTable1}`.`entity_id`"
. " AND `{$valueTable1}`.`attribute_id`='{$this->getAttribute()->getId()}'"
. " AND `{$valueTable1}`.`store_id`='{$adminStore}'",
array()
);
if ($collection->getStoreId() != $adminStore) {
$collection->getSelect()->joinLeft(
array($valueTable2 => $this->getAttribute()->getBackend()->getTable()),
"`e`.`entity_id`=`{$valueTable2}`.`entity_id`"
. " AND `{$valueTable2}`.`attribute_id`='{$this->getAttribute()->getId()}'"
. " AND `{$valueTable2}`.`store_id`='{$collection->getStoreId()}'",
array()
);
$valueExpr = new Zend_Db_Expr("IF(`{$valueTable2}`.`value_id`>0, `{$valueTable2}`.`value`, `{$valueTable1}`.`value`)");
} else {
$valueExpr = new Zend_Db_Expr("`{$valueTable1}`.`value`");
}
$collection->getSelect()
->order($valueExpr, $dir);
return $this;
}
public function getFlatColums()
{
$columns = array(
$this->getAttribute()->getAttributeCode() => array(
'type' => 'int',
'unsigned' => false,
'is_null' => true,
'default' => null,
'extra' => null
)
);
return $columns;
}
public function getFlatUpdateSelect($store)
{
return Mage::getResourceModel('eav/entity_attribute')
->getFlatUpdateSelect($this->getAttribute(), $store);
}
}
希望这能帮到您。
欲了解更多信息,请查看
这里。
Mage_Eav_Model_Entity_Attribute_Source_Abstract
类似乎最有用。我的问题是,我想要一个“文本框”类型的属性(即在文本框中输入值),它验证为数字,支持负值,并存储在十进制表中以进行排序。它应该类似于“价格”属性类型,但必须支持负值。我的直觉告诉我应该扩展前端类,但我不确定如何做。 - Mageician