WooCommerce Subscriptions - Replace Sign up button with custom field url if user have active subcription - wordpress

Question

I build a learning website by wordpress + woocommerce + woocommerce subcription + advanced custom field. The idea is create a simple subcription product, then if anyone bought subcription they will see the Enter Class button instead of Sign Up button.
I did google for help and try some code but no luck. Please help me. Thank you so much!
function has_active_subscription( $user_id=null ) {
// When a $user_id is not specified, get the current user Id
if( null == $user_id && is_user_logged_in() )
$user_id = get_current_user_id();
// User not logged in we return false
if( $user_id == 0 )
return false;
global $wpdb;
// Get all active subscriptions count for a user ID
$count_subscriptions = $wpdb->get_var( "
SELECT count(p.ID)
FROM {$wpdb->prefix}posts as p
JOIN {$wpdb->prefix}postmeta as pm
ON p.ID = pm.post_id
WHERE p.post_type = 'shop_subscription'
AND p.post_status = 'wc-active'
AND pm.meta_key = '_customer_user'
AND pm.meta_value > 0
AND pm.meta_value = '$user_id'
" );
return $count_subscriptions == 0 ? false : true;
}
// Shop and archives - Replace add to cart ajax button to a custom linked button
add_filter( 'woocommerce_loop_add_to_cart_link', 'replace_loop_add_to_cart', 20, 2 );
function replace_loop_add_to_cart( $html, $product ) {
if( has_active_subscription( $product->get_id() ) ) {
$link = get_field('link_enter_class');
$text = __("Enter Class", "woocommerce");
$html = '' . $text . '';
}
return $html;
}
// Single products: Replacing the button add to cart by a custom button on single product pages
add_action( 'woocommerce_single_product_summary', 'replace_single_add_to_cart_button', 1 );
function replace_single_add_to_cart_button() {
global $product;
if( has_active_subscription( $product->get_id() ) ) {
// For variable product types (keeping attribute select fields)
if( $product->is_type( 'variable' ) ) {
remove_action( 'woocommerce_single_variation', 'woocommerce_single_variation_add_to_cart_button', 20 );
add_action( 'woocommerce_single_product_summary', 'custom_single_add_to_cart_button', 20 );
}
// For all other product types
else {
remove_action( 'woocommerce_single_product_summary', 'woocommerce_template_single_add_to_cart', 30 );
add_action( 'woocommerce_single_product_summary', 'custom_single_add_to_cart_button', 30 );
}
}
}
// Utility function: displays a custom button replacement
function custom_single_add_to_cart_button() {
$link = get_field('link_enter_class');
$text = __("Enter Class", "woocommerce");
echo '' . $text . '';
}

Answer 1

The wcs_place_subscription_order_text filter can be used to customize the button.
function custom_filter_wcs_place_subscription_order_text( $button_text ) {
$button_text = __( 'Enter class', 'woocommerce-subscriptions' );
return $button_text;
}
add_filter( 'wcs_place_subscription_order_text', 'custom_filter_wcs_place_subscription_order_text' );
Instead of adding the link on the button, On the success page, you can redirect the user to that link.
function redirect_to_class( $order_id ) {
$link = get_field('link_enter_class');
wp_redirect( $link );
}
add_action( 'woocommerce_thankyou', 'redirect_to_class', 1 );