Magento 2 wishlist

[roja_p]

hi, i have one question about the customer wants to add product in wishlist , if already product has to be in wishlist then product didn't increment in wishlist simply alert has to be shown if not then add in wishlist, please help me.

[Manish Mittal · Accepted solution]

Hello @roja_p

You can use \Magento\Wishlist\Helper\Data to check if a product is already on the wishlist.

/** @var \Magento\Wishlist\Helper\Data $wishlistHelper **/

$wishlistHelper->getWishlistItemCollection()
              ->addFieldToFilter('product_id', $_product->getId());

Remember to inject this class in your construction.

[roja_p]

thanks for u r reply, but default behavoiur of magento has wishlist products has count the no of times to add products in wishlist. i would like to restrict that increment when customer add the product to wishlist on sencond time.

[Manish Mittal]

@roja_p

Yes you can using this function, you have to customize it according to your requirments

[gelanivishal · Accepted solution]

Hello @roja_p,

Here is an example of the wishlist is already added. If item is already in wishlist then it will be displayed as an added icon on the wishlist.

<?php
$objectManager = \Magento\Framework\App\ObjectManager::getInstance();
$_in_wishlist = false;
foreach ($this->helper('Magento\Wishlist\Helper\Data')->getWishlistItemCollection() as $_wishlist_item){
    if($_product->getId() == $_wishlist_item->getProduct()->getId()){
        $_in_wishlist = true;
    }
}
$customerSession = $objectManager->get('Magento\Customer\Model\Session');
if($customerSession->isLoggedIn()) {
    if($_in_wishlist){
        ?>
        <a href="#" data-post="#" data-action="already-in-wishlist"><span class="wish-list lineheight48"><img data-alt-src="<?php echo $block->getViewFileUrl('images/icons/body-shop-icons_wishlist_filled.svg'); ?>" width="38" src='<?php echo $this->getViewFileUrl('images/icons/icon-wishlist-black.svg'); ?>' alt="Wish list"></span></a><?php }else{?>
    <a href="#" data-post='<?php echo $this->helper('Magento\Wishlist\Helper\Data')->getAddParams($_product) ?>' class="action towishlist" data-action="add-to-wishlist"><span class="wish-list lineheight48"><img data-alt-src="<?php echo $block->getViewFileUrl('images/icons/body-shop-icons_wishlist_filled.svg'); ?>" width="38" src='<?php echo $this->getViewFileUrl('images/icons/icon-wishlist.svg'); ?>' alt="Wish list"></span></a><?php } ?>
    <?php
}else{ ?>

    <a href="#" data-post='<?php echo $this->helper('Magento\Wishlist\Helper\Data')->getAddParams($_product) ?>' class="action towishlist" data-action="add-to-wishlist"><span class="wish-list lineheight48"><img data-alt-src="<?php echo $block->getViewFileUrl('images/icons/body-shop-icons_wishlist_filled.svg'); ?>" width="38" src='<?php echo $this->getViewFileUrl('images/icons/icon-wishlist.svg'); ?>' alt="Wish list"></span></a>
    <?php
}
?>

--
If my answer is useful, please Accept as Solution & give Kudos

[roja_p]

i tried as u shown above code in wishlist.phtml which has in vendor folder when i select the wishlist icon its saved in whishlist but second time when i selected its shown as below error please tell me how can i solve that

[roja_p]

[jykmhar123311e]

It is work with caching magento website or not 

ko if: wishlist().counter to do this but it work once only

[jykmhar123311e]

I want to do this with knockout js anyone help me to do this