我想在我自己的课程中更改自定义功能（产品功能）（Artikeleigenschaften）的值。
更改产品值非常简单：
$productObj = new Product($produktId);
$productObj->setFieldsToUpdate(array('ean13'));
$productObj->ean13 = "johndoo";
$productObj->save();
但是有没有类似的方法来改变产品特性？
【问题讨论】：
标签： php prestashop product
这些建议都不适合我。我对此没有什么要求：
这对我有用
/**
* Add or customize feature value to product feature and assign it to product
*
* Creates the feature and the value if they dont exists already
*/
private function _upsertFeatureValueToProduct($product, $featureName, $featureValue, $custom = false)
{
$id_lang = null;
// this creates the feature if required and always returns the id_feature
$id_feature = (int) \Feature::addFeatureImport($featureName);
if ($custom) {
// create or find a custom value
$id_feature_value = (int) \FeatureValue::addFeatureValueImport($id_feature, $featureValue, $product->id, $id_lang, $custom);
// change the existing value to new
$feature_value = new \FeatureValue($id_feature_value);
// in all languages (source only gives one language data)
$feature_value->value = array_fill_keys(\Language::getIDs(false), $featureValue);
$feature_value->update();
// assign the feature to the product (not strictly required if this was a update but doesn't hurt)
Product::addFeatureProductImport($product->id, $id_feature, $id_feature_value);
} else {
// non custom values. we first need to add the value and then assign it
// prestashop uses lang to find the existing feature. use the default language
$id_lang = \Configuration::get('PS_LANG_DEFAULT');
// add or get the feature id for this value
$id_feature_value = (int) \FeatureValue::addFeatureValueImport($id_feature, $featureValue, null, $id_lang, $custom);
// NOTE: product can have the same feature multiple times. But in this case we only get one value from source and want to update the feature
// so before adding the featurevalue delete existing feature assignments
$this->_deleteProductFeatureValueAssignments($product->id, $id_feature);
// assign the feature to the product
Product::addFeatureProductImport($product->id, $id_feature, $id_feature_value);
}
// required? doesn't hurt :)
\Feature::cleanPositions();
}
/**
* Delete product feature value assingments
*
* There is no api for this.. idea stolen from
*
https://github.com/PrestaShop/PrestaShop/blob/2c059b93062ce25bbde22355982e651215544e81/classes/Product.php#L2673
*
* TODO: open feature request, and remove this when prestashop has an api for this.
*/
private function _deleteProductFeatureValueAssignments($id_product, $id_feature)
{
$sql = '
DELETE fp
FROM `' . _DB_PREFIX_ . 'feature_product` fp
LEFT JOIN `' . _DB_PREFIX_ . 'feature_value` fv
ON fv.`id_feature_value` = fp.`id_feature_value`
WHERE
fp.`id_product` = ' . (int) $id_product .
' AND fp.`id_feature` = ' . (int) $id_feature .
' AND `custom`=0
';
return \Db::getInstance()->execute($sql);
}
现在我可以整天调用它，而不会在功能或产品中得到重复值
$this->_upsertFeatureValueToProduct($product, 'size', 'L');
$this->_upsertFeatureValueToProduct($product, 'size', 'XL');
$this->_upsertFeatureValueToProduct($product, 'size', 'custom', true); // one custom size just for fun
$this->_upsertFeatureValueToProduct($product, 'size', 'L');
留给我两个现成的特征值L 和XL 以及一个size=L 和size=custom 的产品
screenshot of product features
可能仍然存在错误，只是让这个工作正常：D
【讨论】：
Product::addFeatureProductImport($productObjc->id, $id_feature, $id_feature_value);
这会将功能及其价值分配给产品。但是我们需要特征和值的 id。下面的代码对我有用。
$feature = new Feature();
$feature->name = [
$lang_id => "string"
];
$feature->position = Feature::getHigherPosition() + 1;
$feature->add();
$featurevalue = new FeatureValue;
$featurevalue->id_feature = $feature->id;
$featurevalue->value = [
$lang_id => "string"
];
$featurevalue->add();
$product->addFeatureProductImport($product->id, $feature->id, $featurevalue->id);
【讨论】：
我基于 ImportControlloer 创建了这个函数。将此函数添加到 Product.php 覆盖并使用它
/**
* Adds a feature value to a Product. If You want to have feature selected from dropdown leave $custom to false.
* @param int|$id_product
* @param int|$id_feature_group
* @param string|$feature_value
* @param bool|true $custom
* @param int|$id_lang
* @return bool
*/
public static function setFeatureValueToProduct($id_product, $id_feature_group, $feature_value, $custom = false, $id_lang)
{
$group_feature_obj = Feature::getFeature($id_lang, $id_feature_group);
if ($group_feature_obj){
$feature_name = $group_feature_obj['name'];
$feature_value = $feature_value ? trim($feature_value) : '';
$position = false;
if (!empty($feature_name) && !empty($feature_value)) {
$id_feature = (int)FeatureCore::addFeatureImport($feature_name, $position);
$id_feature_value = (int)FeatureValue::addFeatureValueImport($id_feature, $feature_value, $id_product, $id_lang, $custom);
if (Product::addFeatureProductImport($id_product, $id_feature, $id_feature_value)){
Feature::cleanPositions();
return true;
} else {
return;
}
}
} else {
return;
}
}
使用示例：
Product::setFeatureValue(1597, 15, 'Dracarys', false, 1);
它将下拉值“Dracarys”上传到 ID 为 1597 的产品和 ID 为 15 的组功能中。如果您想使其自定义值（未预定义），只需将第 4 个参数设置为 true。
【讨论】：
这是我的解决方案： 要更新产品功能，您必须更新数据库中的 2 个表： ps_feature_value 和 ps_feature_value_lang
这样做：
$id_feature_value = (int)FeatureValue::addFeatureValueImport
(
(int)$feature['id_feature'],
$newFeatureValue,
(int)$produktId,
$this->context->language->id,
1 // $custom
);
Product::addFeatureProductImport(
$produktId, (int)$feature['id_feature'], $id_feature_value
);
要使用非自定义值更新功能，请使用：
$arr = FeatureValue::getFeatureValueLang($id_dropdown);
foreach ( $arr AS $item)
if ($item['id_lang'] == $this->context->language->id)
{
$feature_val_name = $item['value'] ;
}
$id_feature_value = (int)FeatureValue::addFeatureValueImport
(
(int)$feature['id_feature'],
$feature_val_name,
$product->id,
$this->context->language->id,
false
);
$product->addFeatureProductImport( $product->id , (int)$feature['id_feature'], $id_feature_value );
【讨论】：
嗯，我从来没有尝试过这样做，但你可以试试这个：
Product::addFeatureProductImport($productObjc->id, $id_feature, $id_feature_value);
【讨论】：
FeatureValue::addFeatureValueImport()。