Get the url of custom login page in the registration page

Question

I am having trouble in getting the url of the page from where I click the register link.

Scenario:

The url of the login page is:

http://abcd.com/wp-login.php?redirect_to=http%3A%2F%2Fabcd.com%2Fxtreme%2F&page=1406

And I when I click register link it should add the redirect_to link in the register page like this:

http://abcd.com/wp-login.php?action=register&redirect_to=http%3A%2F%2Fabcd.com%2Fxtreme%2F&page=1406

I have used the following code but its not taking redirect_to parameter:

add_action( 'registration_redirect', 'redirection_link' );
function redirection_link( $redirect_to ) {
  wp_redirect($GLOBALS['HTTP_SERVER_VARS']['REQUEST_URI']);
  exit; 
}   

Answer 1

You are definitely on the right track; just add a filter (not action!) to your functions.php and pass in the redirect_to parameter (no need for wp_redirect). As soon as the user has submitted the registration form, there will be a redirect to the new page:

add_filter( 'registration_redirect', 'redirection_link' );
function redirection_link( $redirect_to ) {
    return $redirect_to . 'xtreme/page=1406';
}

Update: To perform a hard/permanent redirect to another page you can go with an wp_redirect like this:

add_filter( 'registration_redirect', 'redirection_link' );
function redirection_link( ) {
    wp_redirect( 'http://abcd.com/xtreme/page=1406', 301 );
    // wp_redirect( home_url( '/xtreme/page=1406' ), 301 );
    exit;
}

Update 2: You can also pass in additional parameters (e.g. redirect_to) if you modify the default register_url:

add_filter( 'register_url', 'custom_register_url' );
function custom_register_url( $register_url ) {
    $register_url = home_url( '/wp-login.php/?action=register&redirect_to=http://abcd.com/xtreme/page=1406' );
    return $register_url;
}

Update 3: You can update/reset the registration_redirect to your new register_url (from Update 2) like this:

add_filter( 'registration_redirect', 'reset_redirection_link' );
function reset_redirection_link() {
    return wp_registration_url();
}