如何将产品的属性值复制到Magento中的另一个属性? [英] How to copy a product's attributes value to another attribute in Magento?
问题描述
Magento中是否可以通过编程将属性X的值分配给属性Y?
Is there a way in Magento where I can assign Attribute X's value to Attribute Y programmatically ?
到目前为止,我已经尝试过了.我使用以下设置创建了Y属性:
So far I have tried this. I created the Y attribute with following settings:
$setup->addAttribute('catalog_product','myAttribute',array(
'group'=>'General',
'input'=>'label',
'type'=>'varchar',
'label'=>'Value of Attribute X',
'visible'=>1,
'backend'=>'beta/entity_attribute_backend_myattribute',
'global'=>Mage_Catalog_Model_Resource_Eav_Attribute::SCOPE_STORE
));
在我的后端模型中,我做到了:
In my backend model, I have done this:
class Namespace_Module_Model_Entity_Attribute_Backend_Myattribute extends Mage_Eav_Model_Entity_Attribute_Backend_Abstract
{
public function beforeSave($object){
$attrCode = $this->getAttribute()->getAttributeCode();
$object->setData($attrCode,'HAHAHA');
parent::beforeSave($object);
return $this;
}
}
我可以在产品编辑"页面中看到"HAHAHA"作为属性值.我想将其更改为另一个属性的值.我该怎么做 ?如何从此类访问同一产品的另一个属性的值?
I am able to see "HAHAHA" as the attribute value in the Product Edit page. I want to change this to value of another attribute. How do I do it ? How do I access another attribute's value of the same product from this class ?
PS:实际上是我要实现的目标.属性X是具有100个选项的multiselect类型.因此,属性Y必须跟踪选择的X选项,并且Y在产品页面中以只读格式显示值.
PS: What I am actually trying to achieve is this. The attribute X is of type multiselect with 100s of options. So the attribute Y must keep track of the options selected of X, and Y shows the value in product page in readonly format.
推荐答案
我终于解决了这个问题.我采用了不同的方法,我使用了Observer. 这就是我所做的:
I have solved this finally. I went by a different approach, I used Observer. This is what I did:
我用以下代码创建了一个观察者:
I created an Observer with following code:
class Namespace_Module_Model_Observer
{
private $_processFlag; //to prevent infinite loop of event-catch situation
public function copyAttribute($observer){
if(!$this->_processFlag):
$this->_processFlag=true;
$_store = $observer->getStoreId();
$_product = $observer->getProduct();
$_productid = $_product->getId();
$attrA = $_product->getAttributeText('attributeA'); //get attribute A's value
$action = Mage::getModel('catalog/resource_product_action');
$action->updateAttributes(array($_productid), array('attributeB'=>$attrA),$_store); //assign attrA's value to attrB
$_product->save();
endif;
}
我的config.xml像这样:
And my config.xml went like this:
<events>
<catalog_product_save_after>
<observers>
<namespace_module>
<type>singleton</type>
<class>Namespace_Module_Model_Observer</class>
<method>copyAttribute</method>
</namespace_module>
</observers>
</catalog_product_save_after>
</events>
因此,基本上,我使用的是事件catalog_product_save_after,每次保存产品时都会触发该事件.在我的观察者中,我捕获了事件,获取attributeA的值并分配给attributeB,最后保存了我的产品.
So basically, I am using the event catalog_product_save_after which is fired whenever a product is saved. In my observer, I catch the event, get attributeA's value and assign to attributeB, and finally save my product.
就是这样!我不知道这是否是最好的方法,但是它确实有效!
That's it! I don't know if this is the best method, but it does work!
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