Force free product coupon with single use coupon

[anthonyceo]

I want to be able to stack single use coupons with free product coupons. For example, if someone enters a 20% off coupon, I still want them to be able to get a free item.

Is there options for this or a filter I can use to do this?

[Soft79]

You can use the following WooCommerce filters for that:

woocommerce_apply_individual_use_coupon (must return an array with already applied coupons that may be kept)
woocommerce_apply_with_individual_use_coupon (must return a boolean whether a coupon can be applied while there are individual use coupons in the cart)

[anthonyceo]

Thank you.

filter_woocommerce_apply_individual_use_coupon( $array, $the_coupon, $this_applied_coupons )

What is $array for?

Is info whether or not a coupon has free products stored in $the_coupon?
(e.g. $the_coupon->free_products or something like that)

[Soft79]

It’s the coupons to keep when the individual use coupon is applied. E.g. return all the auto coupons that are already applied to the cart.

See https://docs.woocommerce.com/wc-apidocs/source-class-WC_Cart.html#1582

[anthonyceo]

Thank you for your help. 🙂

Here’s the simple code for others trying to do the same thing. Unfortunately, the coupon object doesn’t declare whether the coupon has a free item. However, all of our coupons for Free Products have a discount amount of 0.

add_filter('woocommerce_apply_with_individual_use_coupon', 'force_bogo_coupon', 10, 2);

function force_bogo_coupon($bool, $coupon) {
	$amount = $coupon->amount;
	$bool = ($amount == 0) ? true : $bool;
	return $bool;
}

Edit:

this code is more specific to a free product:

add_filter('woocommerce_apply_with_individual_use_coupon', 'force_bogo_coupon', 10, 2);

function force_bogo_coupon($bool, $coupon) {
	$meta = $coupon->get_meta('_wjecf_must_select_free_product');
	$bool = ($meta === 'yes') ? true : $bool;
	return $bool;
}

[Yulia Kolesnik]

This works like a charm, thank you! I’ve been looking for exactly this solution.

[Author]

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