Techie Corner

One of my customer request to offer a coupon for all new customer / first order only. But i do not manage to find any free plugin that able to achieve this. So i decided to dig into woocommerce checkout process and write my own function to achieve this.

To apply coupon for new customer in Woocommerce, follow the steps below:-

• Before apply the code below, you have to create a new COUPON. I’ve created a new coupon name ‘firstlove’
• Now you can copy and paste the code below into your theme functions.php

  /**
   * Frontend validate new customer only coupon code
   * hook: woocommerce_after_checkout_validation
   */
  add_action('woocommerce_after_checkout_validation','check_new_customer_coupon', 0);
  
  function check_new_customer_coupon(){
  	global $woocommerce;
  	// you might change the firstlove to your coupon
  	$new_cust_coupon_code = 'firstlove';
  	
  	$has_apply_coupon = false;
  
  	foreach ( WC()->cart->get_coupons() as $code => $coupon ) {
  		if($code == $new_cust_coupon_code) {
  			$has_apply_coupon = true;
  		}
  	}
  
  	if($has_apply_coupon) {
  			
  		if(is_user_logged_in()) {
  			$user_id = get_current_user_id();
  
  			// retrieve all orders
  			$customer_orders = get_posts( array(
  					'meta_key'    => '_customer_user',
  					'meta_value'  => $user_id,
  					'post_type'   => 'shop_order',
  					'numberposts'=> -1
  			) );
  
  			if(count($customer_orders) > 0) {
  				$has_ordered = false;
  					
  				$statuses = array('wc-failed', 'wc-cancelled', 'wc-refunded');
  					
  				// loop thru orders, if the order is not falled into failed, cancelled or refund then it consider valid
  				foreach($customer_orders as $tmp_order) {
  
  					$order = wc_get_order($tmp_order->ID);
  					if(!in_array($order->get_status(), $statuses)) {
  						$has_ordered = true;
  					}
  				}
  					
  				// if this customer already ordered, we remove the coupon
  				if($has_ordered == true) {
  					WC()->cart->remove_coupon( $new_cust_coupon_code );
  					wc_add_notice( sprintf( "Coupon code: %s is only applicable for new customer." , $new_cust_coupon_code), 'error' );
  					return false;
  				}
  			} else {
  				// customer has no order, so valid to use this coupon
  				return true;
  			}
  
  		} else {
  			// new user is valid
  			return true;
  		}
  	}
  
  }

• once done, you can try to apply the coupon code for a new customer. It should work as expected.

If the code above could not satisfied your requirement, you can freely modify.

Happy Coding!

Tags: woocommerce coupon for first order only, woocommerce coupon for new customer only

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