Add custom elements to cart

[radge]

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I have modified the tpl file of the cart so that it has this new functionality, that when a user adds a product it shows a series of recommended products.

The code of the tpl file what it does is to make a call to a static method by skipping the controller and returning an array of objects, this does and it works correctly.

 

     {foreach from=$cars item=book key=key}
        {assign var=id_image value=$car->getFullCoverId($carid)}
        <div class="col-12 col-md-4 col-lg-3 book">
          {assign var=auxExplode value=": "|explode:$carname}
          <img alt="book" src="{$link->getImageLink($car->link_rewrite, $id_image, 'home_default')}">
          <span class="grey-small">{$auxExplode[0]}</span>
          <span class="tittleB marbot">{$auxExplode[1]}</span>
          {if $car->available_for_order == 1}

            <form action="{$urls.pages.cart}" method="post" id="add-to-cart-or-refresh-2">
            <input type="hidden" name="token" value="{$static_token}">
            <input type="hidden" name="id_product" value="{$car->id}" id="product_page_product_id">
            <input type="hidden" name="id_customization" value="{$car->id_customization}" id="product_customization_id">

            <button id="X" class="btn btn-primary add-to-cart comprar_mat"
                    data-button-action="add-to-cart"
                    type="submit">
              {l s='Add to cart' d='Shop.Theme.Actions'}
            </button>

          </form>
          <span class="cursive-span-button">{l s="Price:"} {$carprice}€*</span>
          {/if}
  </div>
      {/foreach}

 

 

This code at the end shows a form for each button and then what I do from the back is in the JS file refresh the page with this code

 

$body.on(
    'click',
    '#add-to-cart-or-refresh-2',
    (event) => {
        event.preventDefault();
        updateProductQuantityInCart(event);
        location.reload();
    }
);

 

The problem is that this code works sometimes if and some do not ... and I can not see the fault, I do not know if someone can give me some idea / suggestion or some other way of doing this.

Thank you