Basierend auf Checkout nur zulassen, wenn sich ein Produkt einer obligatorischen Kategorie im Warenkorb befindet, habe ich versucht, ein eigenes Codebeispiel zu erstellen, das einen Hinweis ausgibt und das Auschecken verhindert, wenn der Warenkorb nur Produkte in bestimmten Kategorien enthält. Es funktioniert bei der Vorbeugung und Fehlermeldung, aber beim Hinzufügen anderer Produkte verweigert es immer noch den Checkout.
/**
* Renders a notice and prevents checkout if the cart
* only contains products in a specific category
*/
//add_action( 'woocommerce_check_cart_items', 'brown_wc_prevent_checkout_for_category' );
function brown_wc_prevent_checkout_for_category() {
// set the slug of the category for which we disallow checkout
$categories = array('drinks','extra-accompaniments');
foreach ($categories as $category => $value) {
// get the product category
$product_cat = get_term_by( 'slug', $category, 'product_cat' );
// sanity check to prevent fatals if the term doesn't exist
if ( is_wp_error( $product_cat ) ) {
return;
}
// check if this category is the only thing in the cart
if ( brown_wc_is_category_alone_in_cart( $category ) ) {
// render a notice to explain why checkout is blocked
wc_add_notice( sprintf( 'Please choose atleast one bento.', $category ), 'error' );
}
}
}
/**
* Checks if a cart contains exclusively products in a given category
*
* @param string $category the slug of the product category
* @return bool - true if the cart only contains the given category
*/
function brown_wc_is_category_alone_in_cart( $category ) {
//When the cart is empty, remove warning message that I have set for when the snippet takes effect
if (!WC()->cart->is_empty()) {
// All the code
// check each cart item for our category
foreach ( WC()->cart->get_cart() as $cart_item_key => $cart_item ) {
// if a product is not in our category, bail out since we know the category is not alone
if ( ! has_term( $category, 'product_cat', $cart_item['data']->id ) ) {
return false;
}
}
// if we're here, all items in the cart are in our category
return true;
} else {
return false; // Assume you'd want false here, since the cart is empty
}
}