This is a guest post by Waqas Nayyer. If you’d like to contribute to our blog, feel free to get in touch with us.
WooCommerce is a robust e-commerce platform, with an extensive set of features for a variety of online business applications. One of the core built-in features of WooCommerce is the ability to set a sale price in addition to the regular price for each individual product on your store. This allows storekeepers to highlight discounts and encourage consumers to make a purchase. However, not every store owner finds this feature useful because not all stores offer regular promotions. Some clients would prefer to use the sale price field in order to highlight specific items above the rest. In this tutorial, you will learn how a WooCommerce shop can be set up so that the “Add to Cart” button is only displayed when a sale price is specified. This should work for both registered and non-registered (guest) users.Modified “Add to Cart” functionality for products on sale
To achieve this setup, all you would have to do is to go to Appearance -> Themes and navigate to your active theme’s functions (functions.php). Then, you can add the below piece of code at the end of the file and hit ‘Save’ (Do note: Ideally, it would make sense to create a child theme so that the modifications do not get affected on the theme update).function prefix_hack_for_on_sale_only( $purchasable, $product ) { if ( ! is_admin() && ! is_user_logged_in() && ! $product-> is_on_sale()) { return false; } return $purchasable; } add_filter('woocommerce_is_purchasable', 'prefix_hack_for_on_sale_only', 1, 2); /* Output account link for non-sale products when user is not logged in * @return bool|string */ function prefix_login_for_prices() { if ( ! class_exists('WooCommerce') ) return false; global $product; $login = false; if ( ! is_user_logged_in() && ! $product->is_purchasable() ) { remove_filter('woocommerce_is_purchasable', 'prefix_hack_for_on_sale_only', 1 ); $login_url = wc_get_account_endpoint_url( 'dashboard' ); if ( is_singular( 'product' ) ) { $login_url = add_query_arg( 'redirect_to', urlencode(get_permalink() ), $login_url ); } if ( $product->is_purchasable() ) { $login = sprintf('<a href="%1$s">%2$s</a>';, esc_url( $login_url ), esc_html__( 'Sign in to view price', 'text-domain' )); } add_filter('woocommerce_is_purchasable','prefix_hack_for_on_sale_only', 1, 2 ); } return $login; }The above code achieves two things:- #1 It helps display “Add to Cart” button on products on sale
“Add to cart” button on products on sale
No option for a user to add regular products to cart
Behind the scenes
When you add the above code to your theme, you enable two things. First of all, the code creates two categories of products:- products with a sale price become “purchasable” with a visible “Add to Cart” button
- and products without a sale price become “view-only” where only the price of the product is displayed.