Add 2 different products and get 5% discount on specific product

[Loes Arentsen]

Hi there,

For a client I’m looking for a solution.
If somebody buys product A (variable prodyct with variable prices) and adds a product out of category B, the customer should get 5% discount on product A. So the discount depends on the chosen variation.

Hope you can help me with this. Thanks!
Loes

[Soft79]

You need to apply a snippet similar to https://www.soft79.nl/forums/topic/buy-product-a-get-30-off-each-product-b/#post-3029 . Are you comfortable with pasting php snippets? I can alter the snippet so it will accept category B instead of only a single product of type B.

[Loes Arentsen]

Yes pasting php is not a problem at all!
Thanks so much!

[Soft79]

This snippet should work.

Create a 5% discount coupon that only applies to product A.

Paste the snippet in your child theme’s functions.php and replace the value after $required_cat with category B’s id and replace the value after $coupon_code with the coupon code. The snippet will invalidate the coupon if there’s no item from category B in the cart.

add_filter( 'woocommerce_coupon_is_valid', function( $valid, $coupon, $wc_discounts ) {
    $required_cat = 6666;
    $coupon_code = 'THE_COUPON_CODE';

    if ( strcasecmp( $coupon->get_code(), $coupon_code ) !== 0 ) {
        return $valid;
    }

    if ( ! class_exists( 'WJECF_WC_Discounts' ) ) {
        return $valid;
    }

    if ( ! $valid ) {
        return $valid;
    }

    if ( is_null( $wc_discounts ) ) {
        $wc_discounts = new WJECF_WC_Discounts( WC()->cart );
    }

    //Get array of all cart product and variation ids
    $product_cats = array();

    foreach ( $wc_discounts->get_items() as $item_key => $item ) {
        if ( ! $item->product ) {
            continue;
        }

        $product_id = $item->product->get_id();
        if ( 'product_variation' == get_post_type( $product_id ) ) {
            $product_id = $item->product->get_parent_id();
        }
        $product_cats = array_merge( $product_cats, wp_get_post_terms( $product_id, 'product_cat', array( 'fields' => 'ids' ) ) );
    }

    if ( ! in_array( $required_cat, $product_cats ) ) {
        $valid = false;
    }

    return $valid;
}, 10, 3 );

Note: untested.

[Loes Arentsen]

Hi there,

In addition to this: is it possible to do this with just categories as well?
So when somemebody buys a product from category A and category B, he gets 5% discount on the product of category B.

Hope to hear from you 🙂

[Loes Arentsen]

@soft79 any help on my last message?
Thanks!

[Author]

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