Tips & Tricks: Make 'Fixed Price' rule have priority over discounts.

By default, if you combine fixed price rules with discount rules, they will combine in their effects. For example, if you have a product that costs $500 for regular users, and you have 2 rules:

-> fixed price: $250 for B2B users

-> discount: 50% for B2B users

The results is that the price will show as $125, reduced from $250. This works great in many situations, but not all.

There are setups where you may want discounts to not be given to a user, if that user already has a fixed price rule.

This can be achieved by adding the following snippet to the site:

add_filter('b2bking_get_offer_product_id', function($offer_id,$current_product_id, $rule_type){

	// if this is a discount rule
	if ($rule_type === 'discount'){
		// if user has any fixed price rules
		$fixed_price_rules = get_transient('b2bking_fixed_price_'.$current_product_id.'_'.get_current_user_id());
		$fixed_price_parent_rules = get_transient('b2bking_fixed_price_parent_'.$current_product_id.'_'.get_current_user_id());

		if (!empty($fixed_price_rules) || !empty($fixed_price_parent_rules)){
			return $current_product_id;
		}
	}

	return $offer_id;
	
}, 10, 3);

Please note that the above currently works only for discount rules that have the "show discount as sale price" checkbox enabled.