How to get product's frontend url from backend?

Question

I am developing a extension of Magento 2. I need to get a product's frontend url from backend. I have tried to use:

//$storeManager->->setCurrentStore(2);
$url = $product->setStoreId(2)->getProductUrl();
$url = $product->setStoreId(2)->getUrlInStore(); 

but the $url always return a backend url, like http://<domain>/admin/catalog/product..... they may work in Magento 1.x but not for 2.x. Is there any way to get frontend url?

Answer 1

Add new constructor dependency to your class forntUrlModel:

function __construct(
    ...
     \Magento\Framework\UrlInterface $frontUrlModel
) {
    $this->frontUrlModel = $frontUrlModel;
}

private function getProductUrl($product, $storeCode = 'default', $categoryId = null) {
        $routeParams = [ '_nosid' => true, '_query' => ['___store' => $storeCode]];

        $routeParams['id'] = $product->getId();
        $routeParams['s'] = $product->getUrlKey();
        if ($categoryId) {
            $routeParams['category'] = $categoryId;
        }
     return $this->frontUrlModel->getUrl('catalog/category/view', $routeParams);
 }

And use DI to inject right dependency

<type name="YouClass"> 
    <arguments>
        <argument name="frontUrlModel" xsi:type="object" shared="false">Magento\Framework\Url</argument>
    </arguments>
</type>

Answer 2

I answer my question. mtns_cll's answer the question of Magento 2 get frontend store url for a path in admin works for me.

I post my solution here in case someone need it:

product frontend:

inject \Magento\Framework\Url $url

$url->getUrl('catalog/product/view', ['id' => $entityId, '_nosid' => true, '_query' => ['___store' => $storeCode]]);

product backend

inject \Magento\Framework\UrlInterface $url or use url interface inherited from parent class.

$url->getUrl('catalog/product/edit', ['id' => $entityId, 'store' => $targetStoreId]);

category frontend

inject `\Magento\Framework\Url $url

$url->getUrl('catalog/category/view', ['id' => $entityId, '_nosid' => true, '_query' => ['___store' => $storeCode]]);

category backend

inject \Magento\Framework\UrlInterface $url or use url interface inherited from parent class.

$url->getUrl('catalog/category/edit', ['id' => $entityId, 'store' => $targetStoreId]);

cms page frontend

inject Magento\Cms\Block\Adminhtml\Page\Grid\Renderer\Action\UrlBuilder $rul

$url->getUrl($this->_pageModel->getIdentifier(), $targetStoreId, $storeCode );

cms page backend

inject \Magento\Framework\UrlInterface $url or use url interface inherited from parent class.

$url->getUrl(PageActions::CMS_URL_PATH_EDIT, ['page_id' => $pageId]);

cms block backend

inject \Magento\Framework\UrlInterface $url or use url interface inherited from parent class.

$url->getUrl(BlockActions::URL_PATH_EDIT, ['block_id' => $blockId]);

Answer 3

You can try to use Magento/Store/Model/StoreManager. Inject it into a constructor via Magento/Store/Model/StoreManagerInterface, more or less like this:

    public function __construct(
\Magento\Store\Model\StoreManagerInterface $storeManager,
   .....
) {
   ...
$this->_storeManager=$storeManager;
}
$requestedStoreObject = $this->_storeManager->getStore($storeId);
$urlToRequestedStore = $requestedStoreObject->getUrl();

You should notice that function getStore() as an argument can take not only integer, but also string or object:

/**
 * Retrieve application store object
 *
 * @param null|string|bool|int|\Magento\Store\Api\Data\StoreInterface $storeId
 * @return \Magento\Store\Api\Data\StoreInterface
 */
public function getStore($storeId = null);