Automattic\WooCommerce\StoreApi\Utilities

CartController::add_to_cart() │ public │ WC 1.0

Based on the core cart class but returns errors rather than rendering notices directly.

Method of the class: CartController{}

Return

String.

Usage

$CartController = new CartController();
$CartController->add_to_cart( $request );

$request(array) (required)

Add to cart request params.

CartController::add_to_cart() CartController::add to cart code ^{WC 8.7.0}

public function add_to_cart( $request ) {
	$cart    = $this->get_cart_instance();
	$request = wp_parse_args(
		$request,
		[
			'id'             => 0,
			'quantity'       => 1,
			'variation'      => [],
			'cart_item_data' => [],
		]
	);

	$request = $this->filter_request_data( $this->parse_variation_data( $request ) );
	$product = $this->get_product_for_cart( $request );
	$cart_id = $cart->generate_cart_id(
		$this->get_product_id( $product ),
		$this->get_variation_id( $product ),
		$request['variation'],
		$request['cart_item_data']
	);

	$this->validate_add_to_cart( $product, $request );

	$quantity_limits  = new QuantityLimits();
	$existing_cart_id = $cart->find_product_in_cart( $cart_id );

	if ( $existing_cart_id ) {
		$cart_item           = $cart->cart_contents[ $existing_cart_id ];
		$quantity_validation = $quantity_limits->validate_cart_item_quantity( $request['quantity'] + $cart_item['quantity'], $cart_item );

		if ( is_wp_error( $quantity_validation ) ) {
			throw new RouteException( $quantity_validation->get_error_code(), $quantity_validation->get_error_message(), 400 );
		}

		$cart->set_quantity( $existing_cart_id, $request['quantity'] + $cart->cart_contents[ $existing_cart_id ]['quantity'], true );

		return $existing_cart_id;
	}

	// Normalize quantity.
	$add_to_cart_limits = $quantity_limits->get_add_to_cart_limits( $product );
	$request_quantity   = (int) $request['quantity'];

	if ( $add_to_cart_limits['maximum'] ) {
		$request_quantity = min( $request_quantity, $add_to_cart_limits['maximum'] );
	}

	$request_quantity = max( $request_quantity, $add_to_cart_limits['minimum'] );
	$request_quantity = $quantity_limits->limit_to_multiple( $request_quantity, $add_to_cart_limits['multiple_of'] );

	/**
	 * Filters the item being added to the cart.
	 *
	 * @since 2.5.0
	 *
	 * @internal Matches filter name in WooCommerce core.
	 *
	 * @param array $cart_item_data Array of cart item data being added to the cart.
	 * @param string $cart_id Id of the item in the cart.
	 * @return array Updated cart item data.
	 */
	$cart->cart_contents[ $cart_id ] = apply_filters(
		'woocommerce_add_cart_item',
		array_merge(
			$request['cart_item_data'],
			array(
				'key'          => $cart_id,
				'product_id'   => $this->get_product_id( $product ),
				'variation_id' => $this->get_variation_id( $product ),
				'variation'    => $request['variation'],
				'quantity'     => $request_quantity,
				'data'         => $product,
				'data_hash'    => wc_get_cart_item_data_hash( $product ),
			)
		),
		$cart_id
	);

	/**
	 * Filters the entire cart contents when the cart changes.
	 *
	 * @since 2.5.0
	 *
	 * @internal Matches filter name in WooCommerce core.
	 *
	 * @param array $cart_contents Array of all cart items.
	 * @return array Updated array of all cart items.
	 */
	$cart->cart_contents = apply_filters( 'woocommerce_cart_contents_changed', $cart->cart_contents );

	/**
	 * Fires when an item is added to the cart.
	 *
	 * This hook fires when an item is added to the cart. This is triggered from the Store API in this context, but
	 * WooCommerce core add to cart events trigger the same hook.
	 *
	 * @since 2.5.0
	 *
	 * @internal Matches action name in WooCommerce core.
	 *
	 * @param string $cart_id ID of the item in the cart.
	 * @param integer $product_id ID of the product added to the cart.
	 * @param integer $request_quantity Quantity of the item added to the cart.
	 * @param integer $variation_id Variation ID of the product added to the cart.
	 * @param array $variation Array of variation data.
	 * @param array $cart_item_data Array of other cart item data.
	 */
	do_action(
		'woocommerce_add_to_cart',
		$cart_id,
		$this->get_product_id( $product ),
		$request_quantity,
		$this->get_variation_id( $product ),
		$request['variation'],
		$request['cart_item_data']
	);

	return $cart_id;
}