Automattic\WooCommerce\StoreApi\Utilities

QuantityLimits::validate_cart_item_quantity │ public │ WC 1.0

Check that a given quantity is valid according to any limits in place.

Method of the class: QuantityLimits{}

No Hooks.

Returns

\WP_Error|true.

Usage

$QuantityLimits = new QuantityLimits();
$QuantityLimits->validate_cart_item_quantity( $quantity, $cart_item );
$quantity(int|float) (required)
Quantity to validate.
$cart_item(array) (required)
Cart item.

QuantityLimits::validate_cart_item_quantity() code WC 10.4.3

woocommerce/src/StoreApi/Utilities/QuantityLimits.php 
public function validate_cart_item_quantity( $quantity, $cart_item ) {
	$limits   = $this->get_cart_item_quantity_limits( $cart_item );
	$product  = $cart_item['data'] ?? false;
	$quantity = wc_stock_amount( $quantity );

	if ( ! $product instanceof \WC_Product ) {
		return true;
	}

	if ( ! $limits['editable'] && $quantity > $limits['maximum'] ) {
		/* translators: 1: product name */
		return new \WP_Error( 'readonly_quantity', sprintf( __( 'The quantity of "%1$s" cannot be changed', 'woocommerce' ), $product->get_name() ) );
	}

	if ( $quantity < $limits['minimum'] ) {
		/* translators: 1: product name 2: minimum quantity */
		return new \WP_Error( 'invalid_quantity', sprintf( __( 'The minimum quantity of &quot;%1$s&quot; allowed in the cart is %2$s', 'woocommerce' ), $product->get_name(), $limits['minimum'] ) );
	}

	if ( $quantity > $limits['maximum'] ) {
		/* translators: 1: product name 2: maximum quantity */
		return new \WP_Error( 'invalid_quantity', sprintf( __( 'The maximum quantity of &quot;%1$s&quot; allowed in the cart is %2$s', 'woocommerce' ), $product->get_name(), $limits['maximum'] ) );
	}

	if ( ! $this->is_multiple_of( $quantity, NumberUtil::normalize( $limits['multiple_of'] ) ) ) {
		/* translators: 1: product name 2: multiple of */
		return new \WP_Error( 'invalid_quantity', sprintf( __( 'The quantity of &quot;%1$s&quot; must be a multiple of %2$s', 'woocommerce' ), $product->get_name(), $limits['multiple_of'] ) );
	}

	return true;
}