I’m trying to force a specific product in WooCommerce to be sold separately.
I however want this product to sell in unlimited quantity.
Based on Force sold individually product to be bought alone in WooCommerce answer code which works quite well, I am currently using:
function filter_woocommerce_add_to_cart_validation( $passed, $product_id, $quantity, $variation_id = null, $variations = null ) {
// Product id to bought alone
$product_id_alone = 666;
// Set variable
$alone = true;
// If passed
if ( $passed ) {
// If cart is NOT empty when a product is added
if ( !WC()->cart->is_empty() ) {
// If product id added = product id alone
if ( $product_id_alone == $product_id ) {
$alone = false;
} else {
// Generate a unique ID for the cart item
$product_cart_id = WC()->cart->generate_cart_id( $product_id_alone );
// Check if product is in the cart
$in_cart = WC()->cart->find_product_in_cart( $product_cart_id );
// If product is already in cart
if ( $in_cart ) {
$alone = false;
}
}
} else {
if ( $product_id_alone == $product_id) {
$alone = true;
}
}
}
if ( $alone == false ) {
// Set error message
$message = 'Product 666 must be bought separately.';
wc_add_notice( __( $message, 'woocommerce' ), 'error' );
$passed = false;
}
return $passed;
}
add_filter( 'woocommerce_add_to_cart_validation', 'filter_woocommerce_add_to_cart_validation', 10, 5 );
If the cart is empty, I can add product with ID 666 with a custom quantity.
Once product ID 666 has been added to the cart, I can’t add another product to the cart.
And if I start by adding another product to an empty cart, I can’t add product ID 666 to the cart.
The issue is that if I add product ID 666 to an empty cart I can’t increase quantity of product 666 by adding more of that product into the cart.
2
Answers
To force a specific product to be sold alone, in a separate order, use:
When adding the product with ID 666:
When a product with a different ID is added:
This is my script that prevents products of a certain type from being placed in the same order with those of another, based on the value of a certain tag