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是否可以在不加载模型的情况下更新模型?

分类: 技术问答 • 2022-03-20 14:20:29

是否可以在不加载模型的情况下更新模型?

问题描述：

我想在不实际加载整个客户模型的情况下更新客户.这是我当前的代码:

I would like to update a customer without actually loading the entire customer model. Here is my current code:

$customer = Mage::getModel('customer/customer')->load($customerId, 'entity_id');
$customer->setEmail('test@email.com');
$customer->save();

是否可以在不首先加载模型的情况下进行更新?

Is it possible to update the model without first loading it?

答

只要定义了模型的ID，下面的代码就可以正常工作，但是它将丢失对象先前拥有的数据.

The code bellow should work fine as long as the model's ID is defined, it will however loose the previous data the object had.

$customer = Mage::getModel('customer/customer');
$customer->setEmail('test@email.com');
$customer->save();
// will create a customer with an email set to `test@email.com`
// everything else will either be default or null

具有水合作用的更新

$customer = Mage::getModel('customer/customer')->load($customerId, 'entity_id');
// this step is also known as `hydration` because the model is like
// a sponge in the watter, it sucks in the values
$customer->setEmail('test@email.com');
$customer->save();
// will update a customer and only ovewrite its email to `test@email.com`
// everything else will be as it was before the save

没有水合的更新

$customer = Mage::getModel('customer/customer');
$customer->setId($customerId);
$customer->setEmail('test@email.com');
$customer->save();
// will replace all of the values present on the initial customer with
// an email set to `test@email.com`and everything else set to be default or null

更新单个属性

原则是您可以通过指定entity_id，attribute_code/attribute_id和值来设置属性值.

UPDATE single attribute

The principle is the fact that you can set an attribute value by specifying the entity_id, attribute_code/attribute_id and the value.

/* still looking for a usage snippet */

/* defined in `Mage_Eav_Model_Entity_Abstract` */
protected function _setAttributeValue($object, $valueRow)
{
    $attribute = $this->getAttribute($valueRow['attribute_id']);
    if($attribute) {
        $attributeCode = $attribute->getAttributeCode();
        $object->setData($attributeCode, $valueRow['value']);
        $attribute->getBackend()->setEntityValueId($object, $valueRow['value_id']);
    }

    return $this;
}

这显然没有上述负面影响.

This obviously does not have the aforementioned negative side-effect.

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