Product Stock Quantity - No of Products in Cart

Question

Is it possible in WooCommerce to calculate the amount of products in stock minus the no of products in the cart? So

products in stock - products_in_cart

We need this so we can show 2-4 delivery days if they order more than is in stock. Normally you can use get_stock_quantity() to get the stock quantity, but as long as the purchase is not made that does not show stock once the purchase has been made. My current code/shortcode is this:

/**
 * Register in or out of stock text shortcode
 *
 * @return null
 */
function imwz_register_in_or_out_stock_text_shortcode() {
  add_shortcode( 'inoroutofstocktext', 'imwz_in_or_out_stock_text_check' );
}
add_action( 'init', 'imwz_register_in_or_out_stock_text_shortcode' );


function imwz_in_or_out_stock_text_check () {
  global $product;

  ob_start();

  $output = '';

  if ( ! $product->managing_stock() && ! $product->is_in_stock() ) {
      echo "2-4 dagen";
  }
  elseif ($product->is_in_stock()) {
    echo "1-2 dagen";
  }

  else {
    echo "nothing to see here";
  }

  $output = ob_get_clean();

  return $output;
}

This only shows what is in stock and only products sold are deducted and based on that is shows text. But I need to check if in cart causes less than in stock and then show a longer delivery date.

Answer 1

You could use the following to know how many pieces of a certain product are in the shopping cart

global $product;

// Get product id
$product_id = $product->get_id();

// Cart not empty   
if ( WC()->cart->get_cart_contents_count() >= 1 ) {
    // set variable
    $in_cart = false;

    // loop through the shopping cart
    foreach ( WC()->cart->get_cart() as $cart_item ) {
        $product_in_cart = $cart_item['product_id'];

        // Get quantity in cart
        $quantity = $cart_item['quantity'];

        // match
        if ( $product_in_cart === $product_id ) {
            $in_cart = true;
        }
    }

    // product found
    if ( $in_cart ) {
        echo 'product is in het winkelwagentje, met ' . $quantity . 'stuks';
    }
}