How to create custom discount for the cart in woocommerce

php, woocommerce, wordpress

Solution

add_action('woocommerce_checkout_order_processed','custom_disount',10,1);
function custom_disount($order_id){
    $order = wc_get_order($order_id);
    $order_items = $order->get_items();
    foreach ($order_items as $order_item_key => $order_item) {
        $product = new WC_Product((int) $order_item['product_id']);
        $quantity = (int) $order_item['qty'];
        $discount=($product->regular_price*30)/100;  //30% disount.
        wc_update_order_item_meta($order_item_key,'_line_total',($product->regular_price*$quantity)-($discount*$quantity));
    }
}

Problem

I'm creating a Plugin in WooCommerce and have a small issue with adding custom discounts to the CART / CHECKOUT page. How can I apply custom discount to the cart without creating coupons? Say I want to give some discount of 5 dollars on the cart page. How can I do that? Below is my code from the plugin file where I have used a coupon to apply discount, but I want to add another custom discount without the use of coupon. Action Hook in the plugin file : ``` add_action('woocommerce_calculate_totals',array(&$this,'cart_order_total_action')); ``` and its function in the plugin file is : ``` public function cart_order_total_action(){ if ( is_user_logged_in() ){ global $woocommerce; global $current_user; global $wpdb; $u_id = $current_user->ID; $table_name = $wpdb->prefix."woocommerce_customer_reward_ms"; $thetable2 = $wpdb->prefix . "woocommerce_customer_reward_cart_ms"; $table_name3 = $wpdb->prefix."woocommerce_customer_reward_points_log_ms"; $data = $wpdb->get_row("SELECT * from $table_name where id=$u_id"); $data2 = $wpdb->get_row("SELECT * from $thetable2"); /* Order Id goes here */ $orders=array();//order ids $args = array( 'numberposts' => -1, 'meta_key' => '_customer_user', 'meta_value' => $current_user->ID, 'post_type' => 'shop_order', 'post_status' => 'publish', 'tax_query'=>array( array( 'taxonomy' =>'shop_order_status', 'field' => 'slug', 'terms' =>'on-hold' ) ) ); $posts=get_posts($args); $orders=wp_list_pluck( $posts, 'ID' ); $order = $orders[0]; /* Order Id ends here */ if($data){ $user_points = $data->points; $points_set = $data2->woo_pts_set; $coupon_code = 'wooreward_discount'; if($user_points>=$points_set){ // this following Code is optional and can be removed......as there is no need of if statement here if ( $woocommerce->cart->has_discount( $coupon_code ) ) { /*$woocommerce->add_error( __('Coupon Code Already Applied.!!','woocommerce'));*/ return false; }else{ $woocommerce->cart->add_discount(sanitize_text_field($coupon_code)); $woocommerce->add_message( __('Taxco925 Reward Discount Applied.!!','woocommerce')); } }else{ $woocommerce->add_error( __('Not Enough Taxco925 Points.!!','woocommerce')); } }else{ $woocommerce->add_error( __('You have have not earned any Taxco925 Points yet.!!','woocommerce')); } } } ``` As you can see this line `$woocommerce->cart->add_discount(sanitize_text_field($coupon_code));` adds my discount to the cart. But it uses coupon in the background to do so . Is there any way I can add a custom discount without the use of coupon.

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