Im wondering how to improve my code below. It's fully 100% working but I want to use ajax in order that we can prevent the page from reload after adding a products to cart.

The code below adds two buttons to add directly 6 or 12 items to the cart. But if I click a button then the page reloads. How can I do that better with ajax?

add_action( 'woocommerce_after_add_to_cart_button', 'additional_simple_add_to_cart', 20 );
function additional_simple_add_to_cart() {
    
    global $product;

    // Only for simple product type
    if( ! $product->is_type('simple') ) return;
                
        // Only for products from category "bier" AND/OR "Cider"
        if ( has_term( array('bier', 'cider', 'getraenke'), 'product_cat', $product->get_id() ) ) {
        
        // Open parent layout wrapper
        echo '<div >';
            
        // Open child left layout wrapper
        echo '<div >';
            
            // Only display when more than 6 are available
            if( $product->get_stock_quantity() >= 6 ) {

                $href = '?add-to-cart=' . esc_attr( $product->get_id() ) . '&quantity=6';
                $class = 'single_add_to_cart_button-6 button alt';
                $style = 'display: inline-block; margin-top: 12px;';
                $button_text = __( "6er Pack", "woocommerce" );

                // Output add to cart button
                echo '<a rel="no-follow" href="'.$href.'" hljs-variable">$class.'" style="'.$style.'">'.$button_text.'</a>';
                                
            }
            
            else {
                echo '<a >6er Pack<p >(Ausverkauft)</p></a>';
            }
            
            // Close child left layout wrapper
            echo '</div>';
            
            // Open child right layout wrapper
            echo '<div >';

            // Only display when more than 12 are available
            if( $product->get_stock_quantity() >= 12 ) {

                $href = '?add-to-cart=' . esc_attr( $product->get_id() ) . '&quantity=12';
                $class = 'single_add_to_cart_button-12 button alt';
                $style = 'display: inline-block; margin-top: 12px;';
                $button_text = __( "12er Pack", "woocommerce" );

                // Output add to cart button
                echo '<a rel="no-follow" href="'.$href.'" hljs-variable">$class.'" style="'.$style.'">'.$button_text.'</a>';
                
            }
            
            else {
                echo '<a >12er Pack<p >(Ausverkauft)</p></a>';
            }

            // Close child right layout wrapper
            echo '</div>';
            
            // Close parent layout wrapper
            echo '</div>';
            
            // Open wrapper shipping info
            echo '<div >';
            
            // Output Info text for "bier" or "cider" products
            //echo '<p >Wähle 6, 9-12 oder 24 Biere einer Brauerei aus.</p>';
            //echo '<p >*Spezial Angebote z.B Probierpakete sind von dieser Beschränkung ausgeschlossen.</p>';
            
            // Tsting link to vendor
            global $product;
            $seller = get_post_field( 'post_author', $product->get_id());
            $author  = get_user_by( 'id', $seller );
            $vendor = dokan()->vendor->get( $seller );

            $store_info = dokan_get_store_info( $author->ID );

            if ( !empty( $store_info['store_name'] ) ) { 

            // Output Info text for "bier" or "cider" products
            echo '<p >Wähle 6, 9-12 oder 24 Biere einer Brauerei aus.</p>';
                
            // Output Vendor link
            printf( '<i ></i><a  href="%s">Mehr von %s</a>', $vendor->get_shop_url(),  $vendor->get_shop_name() );

            // Output shipping Info             
            echo '<p >*Spezial Angebote z.B Probierpakete sind von dieser Beschränkung ausgeschlossen. Versand wird je Brauerei berechnet.</p>';

            }
      
            // Close wrapper shipping info
            echo '</div>';
        }
}

CodePudding user response：

On all your products you already have button that adds items to a cart, give them a class (e.g add-to-cart) and add another attribute to it data-id.

<button type="button" class="add-to-cart" data-id="product-id">Add to Cart</button>

In your JS you call the click event listener of the button.add-to-cart class. use querySelector() and get the data-id of the clicked button, send the product ID with ajax call to your php code, in callback of the ajax (return), return the count of the items in the cart:: I Suggest that the cart counter (where you show how many Items are in the cart) have an ID which you can use to update on return of the add-to-cart ajax call.

CodePudding user response：

Woocommerce Provide Ajax add-to-cart feature

Follow this approach

Dashboard >> woocommerce >> settings >> Product >> Check(Enable AJAX add to cart buttons on archives) option

<a href="?add-to-cart=420" data-quantity="1" class="button product_type_simple add_to_cart_button ajax_add_to_cart" data-product_id="420" data-product_sku="" aria-label="Add “Product Simple only” to your cart" rel="nofollow">Add to cart</a>