Route Notifications Via Username & Email

Format your email field(s) in notifications as {usernames:user1:user2}{emails:account@example.com} or {usernames:user1:user2:user3} or as usual.

// Allow Gravity Form notification email fields to use usernames and email
// Format your email fields in notifications as {usernames:user1:user2:user3} or {usernames:user1:user2}{emails:account@example.com}
add_filter( 'gform_notification', function ( $notification, $form, $entry ) {

   // run all email fields in the notification through route translation
   if ( $notification['toType'] == 'email' ) {

      $notification['to'] = typewheel_gform_notification_translate_routes( $notification['to'] );

   } else if ( $notification['toType'] == 'routing' ) {

      foreach ( $notification['routing'] as $key => $route )
         $notification['routing'][ $key ]['email'] = typewheel_gform_notification_translate_routes( $notification['routing'][ $key ]['email'] );

   }

   $notification['from'] = typewheel_gform_notification_translate_routes( $notification['from'] );
   $notification['replyTo'] = typewheel_gform_notification_translate_routes( $notification['replyTo'] );
   $notification['bcc'] = typewheel_gform_notification_translate_routes( $notification['bcc'] );

   return $notification;

}, 10, 3 );

// reusable function for translating routes
function typewheel_gform_notification_translate_routes( $routes ) {

   if ( strpos( $routes, '{usernames' ) !== false || strpos( $routes, '{emails' ) !== false ) {

      // parse the username and email batches
      $routes = str_replace( array( '} {', '},{' ), '}{', $routes );
      $batches = explode( '}{', substr( $routes, 1, -1 ) );

      foreach ( $batches as $key => $batch ) {

         if ( strpos( $batch, 'usernames' ) !== false )
            $usernames = explode( ':', $batch );

         if ( strpos( $batch, 'emails' ) !== false )
            $emails = explode( ':', $batch );

      }

      $to = array(); // initialize the to array

      // loop through users and grab the email
      if ( isset( $usernames ) ) {
         unset( $usernames[0] );
         foreach ( $usernames as $username ) {
            $user = get_user_by( 'login', $username );
            if ( $user !== false ) $to[] = $user->user_email;
         }
      }

      // loop through the email addresses
      if ( isset( $emails ) ) {
         unset( $emails[0] );
         foreach ( $emails as $email ) $to[] = $email;
      }

      // add all addresses to the notification
      $routes = implode( ',', $to );

   }

   return $routes;

} // end typewheel_gform_notification_translate_routes()

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