Magento 2 常用代码

Object

/**
 * @param $className
 * @return mixed
 */
public function getObject($className)
{
    return \Magento\Framework\App\ObjectManager::getInstance()->get($className);
}

/**
 * @param $className
 * @return mixed
 */
public function createObject($className)
{
    return \Magento\Framework\App\ObjectManager::getInstance()->create($className);
}

Url

/**
 * Generate url by route and parameters
 *
 * @param   string $route
 * @param   array $params
 * @return  string
 */
public function getUrl($route = '', $params = [])
{
    return $this->urlManager->getUrl($route, $params);
}

/**
 * @return string
 */
public function getRefer()
{
    return $this->urlEncoder->encode($this->urlManager->getCurrentUrl());
}

/**
 * @return string
 */
public function decodeUrl($refer)
{
    return $this->urlDecoder->decode($refer);
}
注：
urlManager —> \Magento\Framework\UrlInterface
urlEncoder -> \Magento\Framework\Url\EncoderInterface
urlDecoder -> \Magento\Framework\Url\DecoderInterface

Product object

$product = \Magento\Framework\App\ObjectManager::getInstance()->create('Magento\Catalog\Model\Product')->load($productId); // by id
$product = \Magento\Framework\App\ObjectManager::getInstance()->create('Magento\Catalog\Api\ProductRepositoryInterface')->get($sku); // by sku

Product custom attribute and attribute label

// attribute
$product = \Magento\Framework\App\ObjectManager::getInstance()->create('Magento\Catalog\Model\Product')->load($productId);
$attribute = $product->getData($attributeName);

// attribute label
$attributeLabel = $product->getAttributeText($attributeName);
// or
$attributeLabel = $product->getResource()->getAttribute($attributeName)->getFrontend()->getValue($product);

Categories

$objectManger = \Magento\Framework\App\ObjectManager::getInstance();
$categoryHelper = $objectManger->create('Magento\Catalog\Helper\Category');
$categories = $categoryHelper->getStoreCategories($sorted = false, $asCollection = false, $toLoad = true);
$menus = array();
foreach ($categories as $category){
    $sub = array();
    $sub['name'] = $category->getName();
    $sub['link'] = $categoryHelper->getCategoryUrl($category);
    $menus[] = $sub;
}

Category custom attribute

$objectManger = \Magento\Framework\App\ObjectManager::getInstance();
$categoryModel = $objectManger->get('Magento\Catalog\Model\Category')->load($categoryId);
$attribute = $categoryModel->getData('attribute_name');

Logo and Copyright

// Logo
$objectManger = \Magento\Framework\App\ObjectManager::getInstance();
$logoObject = $objectManger->create('Magento\Theme\Block\Html\Header\Logo');
$logo = $logoObject->getLogoSrc();

// Copyright
$footer = $objectManger->create('Magento\Theme\Block\Html\Footer');
$copyright = $footer->getCopyright();

Format price

$objectManager = \Magento\Framework\App\ObjectManager::getInstance();
$priceHelper = $objectManager->create('Magento\Framework\Pricing\Helper\Data');
$price = 998;
$formattedPrice = $priceHelper->currency($price, true, false); // eg:EGP998.00
注: 已convert价格

$priceHelper = $objectManager->get('Magento\Framework\Pricing\PriceCurrencyInterface');
$formatPrice = $priceHelper->format($price);
注: 未convert价格

Resize product image

/**
 * Resize product image
 *
 * @param $imageFile
 * @param $size
 * @return mixed
 */
public function resizeProductImage($imageFile, $size)
{
    $imageObj = $objectManager->get("Magento\Catalog\Model\Product\Image");
    $imageObj->setDestinationSubdir("image");
    $imageObj->setSize($size);
    $imageObj->setBaseFile($imageFile);
    if (!$imageObj->isCached()) {
        $imageObj->resize();
        $imageObj->saveFile();
    }
    return $imageObj->getUrl();
}

Customer session

/**
 * Return customer session model
 *
 * @return mixed
 */
public function getCustomerSession()
{
    return \Magento\Framework\App\ObjectManager::getInstance()->get('Magento\Customer\Model\Session');
}

Get params

$params = $this->_request->getParams();
$param = $this->_request->getParam($key);

用户验证

$authentication = $objectManager->get("Magento\Customer\Model\Authentication");
$customerId = $this->getCustomerSession()->getCustomer()->getId();
$currentPassword = $this->_request->getParam('current_password');
$checkResult = $authentication->authenticate($customerId, $currentPassword); // 返回值为 ture/false

自定义前缀 (Custom prefix of order/invoice/shipment/creditmemo)

UPDATE sales_sequence_profile SET prefix = 'order-' WHERE meta_id in (SELECT meta_id FROM sales_sequence_meta 
WHERE entity_type='order' AND store_id !=0);
UPDATE sales_sequence_profile SET prefix = 'invoice-' WHERE meta_id in (SELECT meta_id FROM sales_sequence_meta 
WHERE entity_type='invoice' AND store_id !=0);
UPDATE sales_sequence_profile SET prefix = 'shipment-' WHERE meta_id in (SELECT meta_id FROM sales_sequence_meta 
WHERE entity_type='shipment' AND store_id !=0);
UPDATE sales_sequence_profile SET prefix = 'creditmemo-' WHERE meta_id in (SELECT meta_id FROM 
sales_sequence_meta WHERE entity_type='creditmemo' AND store_id !=0);