WooCommerce mnicart qty update

hooks.php

<?php
add_action('woocommerce_widget_shopping_cart_before_buttons','ask_woo_mini_cart_before_buttons' );

function ask_woo_mini_cart_before_buttons(){
	wp_nonce_field( 'woocommerce-cart' ); 
	?>
	<div class="submit-button">
        <input type="submit" class="button" name="update_cart" value="<?php esc_attr_e('Uppdatera varukorg', 'tidymerch'); ?>"/>                  
	</div>
	<?php
}

mini-cart.php

<?php
/**
 * Mini-cart
 *
 * Contains the markup for the mini-cart, used by the cart widget.
 *
 * This template can be overridden by copying it to yourtheme/woocommerce/cart/mini-cart.php.
 *
 * HOWEVER, on occasion WooCommerce will need to update template files and you
 * (the theme developer) will need to copy the new files to your theme to
 * maintain compatibility. We try to do this as little as possible, but it does
 * happen. When this occurs the version of the template file will be bumped and
 * the readme will list any important changes.
 *
 * @see     https://docs.woocommerce.com/document/template-structure/
 * @author  WooThemes
 * @package WooCommerce/Templates
 * @version 3.3.0
 */
if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

do_action( 'woocommerce_before_mini_cart' ); ?>
<div class="shop_table cart">

<?php if ( ! WC()->cart->is_empty() ) : ?>
    <form action="<?php echo esc_url(wc_get_cart_url()); ?>" method="post">
	<ul class="woocommerce-mini-cart cart_list product_list_widget <?php echo esc_attr( $args['list_class'] ); ?>">
		<?php
			do_action( 'woocommerce_before_mini_cart_contents' );

			foreach ( WC()->cart->get_cart() as $cart_item_key => $cart_item ) {
				$_product     = apply_filters( 'woocommerce_cart_item_product', $cart_item['data'], $cart_item, $cart_item_key );
				$product_id   = apply_filters( 'woocommerce_cart_item_product_id', $cart_item['product_id'], $cart_item, $cart_item_key );

				if ( $_product && $_product->exists() && $cart_item['quantity'] > 0 && apply_filters( 'woocommerce_widget_cart_item_visible', true, $cart_item, $cart_item_key ) ) {
					$product_name      = apply_filters( 'woocommerce_cart_item_name', $_product->get_name(), $cart_item, $cart_item_key );
					$thumbnail         = apply_filters( 'woocommerce_cart_item_thumbnail', $_product->get_image(), $cart_item, $cart_item_key );
					$product_price     = apply_filters( 'woocommerce_cart_item_price', WC()->cart->get_product_price( $_product ), $cart_item, $cart_item_key );
					$product_permalink = apply_filters( 'woocommerce_cart_item_permalink', $_product->is_visible() ? $_product->get_permalink( $cart_item ) : '', $cart_item, $cart_item_key );
					?>
					<li class="woocommerce-mini-cart-item <?php echo esc_attr( apply_filters( 'woocommerce_mini_cart_item_class', 'mini_cart_item', $cart_item, $cart_item_key ) ); ?>">
						<?php
						echo apply_filters( 'woocommerce_cart_item_remove_link', sprintf(
							'<a href="%s" class="remove remove_from_cart_button" aria-label="%s" data-product_id="%s" data-cart_item_key="%s" data-product_sku="%s">&times;</a>',
							esc_url( wc_get_cart_remove_url( $cart_item_key ) ),
							__( 'Remove this item', 'woocommerce' ),
							esc_attr( $product_id ),
							esc_attr( $cart_item_key ),
							esc_attr( $_product->get_sku() )
						), $cart_item_key );
						?>
						<?php if ( ! $_product->is_visible() ) : ?>
							<?php echo str_replace( array( 'http:', 'https:' ), '', $thumbnail ) . $product_name . '&nbsp;'; ?>
						<?php else : ?>
							<a href="<?php echo esc_url( $product_permalink ); ?>">
								<?php echo str_replace( array( 'http:', 'https:' ), '', $thumbnail ) . $product_name . '&nbsp;'; ?>
							</a>
						<?php endif; ?>
						<?php echo wc_get_formatted_cart_item_data( $cart_item ); ?>
						<?php 
						if ($_product->is_sold_individually()) {
                 $product_quantity = sprintf('<input type="hidden" name="cart[%s][qty]" value="1" />', $cart_item_key);
             } else {
							  $input_args = array(
                    'input_name' => "cart[{$cart_item_key}][qty]",
                    'input_value' => $cart_item['quantity'],
                    'max_value' => $_product->backorders_allowed() ? '' : $_product->get_stock_quantity(),
                    'min_value' => '0'
                );
                                              
                $product_quantity = woocommerce_quantity_input($input_args, $_product, false);
                }
                echo apply_filters('woocommerce_cart_item_quantity', $product_quantity, $cart_item_key, $cart_item);
                ?>
						<div class="tidy-minicart-price"><?php echo $product_price;?></div>
					</li>
					<?php
				}
			}

			do_action( 'woocommerce_mini_cart_contents' );
		?>
	</ul>

	<p class="woocommerce-mini-cart__total total"><strong><?php _e( 'Subtotal', 'woocommerce' ); ?>:</strong> <?php echo WC()->cart->get_cart_subtotal(); ?></p>

	<?php do_action( 'woocommerce_widget_shopping_cart_before_buttons' ); ?>	
</form>
	<p class="woocommerce-mini-cart__buttons buttons"><?php do_action( 'woocommerce_widget_shopping_cart_buttons' ); ?></p>

<?php else : ?>

	<p class="woocommerce-mini-cart__empty-message"><?php _e( 'No products in the cart.', 'woocommerce' ); ?></p>

<?php endif; ?>
</div>
<?php do_action( 'woocommerce_after_mini_cart' ); ?>

minicart.js

jQuery(document).on('submit', '.shop_table.cart form', function() {			
        	updateMiniCartQuantity();
        	return false;
    	});

function updateMiniCartQuantity() {
	    var cartForm = jQuery('.shop_table.cart form');
	    jQuery('<input />').attr('type', 'hidden')
	        .attr('name', 'update_cart')
	        .attr('value', 'Update Cart')
	        .appendTo(cartForm);

	    var formData = cartForm.serialize();
	    jQuery.ajax({
	        type: cartForm.attr('method'),
	        url: cartForm.attr('action'),
	        data: formData,
	        dataType: 'html',
	        success: function(response) {
				console.log(response);

	            let wc_cart_fragment_url = (wc_cart_fragments_params.wc_ajax_url).replace("%%endpoint%%", "get_refreshed_fragments");
	            jQuery.ajax({
	                type: 'post',
	                url: wc_cart_fragment_url,
	                success: function(response) {
	                    console.log(response);
	                    var mini_cart_wrapper = jQuery('.widget_shopping_cart_content');
	                    var parent = mini_cart_wrapper.parent();
	                    mini_cart_wrapper.remove();
	                    parent.append(response.fragments['div.widget_shopping_cart_content']);
	                },
	                complete: function() {
	                    cartForm = jQuery('.shop_table.cart form');
	                }
	            });
	        }
	    });
	}