Disable Repeat Purchase For Woocommerce Product

If you have a digital goods store and don’t want your user to make a duplicate purchase. You can use the code below and paste it into the functions.php file of your child theme to disable the repeat purchase.

function sv_disable_repeat_purchase( $purchasable, $product ) {

	// Don't run on parents of variations,
	// function will already check variations separately
	if ( $product->is_type( 'variable' ) ) {
		return $purchasable;
	}

	// Get the ID for the current product (passed in)
	$product_id = $product->get_id(); 

    // return false if the customer has bought the product / variation
    if ( wc_customer_bought_product( wp_get_current_user()->user_email, get_current_user_id(), $product_id ) ) {
        $purchasable = false;
    }

    return $purchasable;
}
add_filter( 'woocommerce_is_purchasable', 'sv_disable_repeat_purchase', 10, 2 );


/**
 * Shows a "purchase disabled" message to the customer
 */
function sv_purchase_disabled_message() {
	global $product; // get the current product to see if it has been purchased

	if ( $product->is_type( 'variable' ) ) {

		foreach ( $product->get_children() as $variation_id ) {
			// Render the purchase restricted message if it has been purchased
			if ( wc_customer_bought_product( wp_get_current_user()->user_email, get_current_user_id(), $variation_id ) ) {
				sv_render_variation_non_purchasable_message( $product, $variation_id );
			}
		}

	} else {

		if ( wc_customer_bought_product( wp_get_current_user()->user_email, get_current_user_id(), $product->get_id() ) ) {
			echo '<div class="woocommerce"><div class="woocommerce-info wc-nonpurchasable-message">You\'ve already purchased this product! It can only be purchased once.</div></div>';
		}
	}
}
add_action( 'woocommerce_single_product_summary', 'sv_purchase_disabled_message', 31 );


/**
 * Generates a "purchase disabled" message to the customer for specific variations
 * 
 * @param \WC_Product $product the WooCommerce product
 * @param int $no_repeats_id the id of the non-purchasable product
 */
function sv_render_variation_non_purchasable_message( $product, $no_repeats_id ) {

	// Double-check we're looking at a variable product
	if ( $product->is_type( 'variable' ) && $product->has_child() ) {

		$variation_purchasable = true;

		foreach ( $product->get_available_variations() as $variation ) {
	
			// only show this message for non-purchasable variations matching our ID
			if ( $no_repeats_id === $variation['variation_id'] ) {
				$variation_purchasable = false;	
				echo '<div class="woocommerce"><div class="woocommerce-info wc-nonpurchasable-message js-variation-' . sanitize_html_class( $variation['variation_id'] ) . '">You\'ve already purchased this product! It can only be purchased once.</div></div>';
			}
		}
	}

	if ( ! $variation_purchasable ) {
		wc_enqueue_js("
			jQuery('.variations_form')
				.on( 'woocommerce_variation_select_change', function( event ) {
					jQuery('.wc-nonpurchasable-message').hide();
				})
				.on( 'found_variation', function( event, variation ) {
					jQuery('.wc-nonpurchasable-message').hide();
					if ( ! variation.is_purchasable ) {
						jQuery( '.wc-nonpurchasable-message.js-variation-' + variation.variation_id ).show();
					}
				})
			.find( '.variations select' ).change();
		");
	}
}