ACF Repeater in Wordpress Widget

helpful-links.php

<?php
/**
 * Wordpress Widget that uses an ACF repeater
 */
class HelpfulLinks extends WP_Widget{

  function __construct(){

    parent::__construct(
      'helpful-links',
      'Helpful Links',
      'This widget lists helpful links'
      );
  }

  function form ( $instance ){
    echo "<p>This will display a list of helpful links</pre>";
    echo "<br/>";
  }

  function widget( $args, $instance ){

    echo $args[ 'before_widget' ] ?>

    <?php if (get_field('helpful_links', 'widget_' . $args['widget_id'])) { ?>

      <div class="headingblock headingblock--navy">
        <h2>Helpful Links</h2>
      </div>
      <div class="content-wrapper">
        <?php

        // check if the repeater field has rows of data
        if( have_rows('helpful_links', 'widget_' . $args['widget_id'])):

          // loop through the rows of data
            while ( have_rows('helpful_links', 'widget_' . $args['widget_id'])) : the_row();
              ?>
                <a class="content-wrapper__link" href="<?php the_sub_field('helpful_link_url'); ?>"><?php the_sub_field('helpful_link_title'); ?></a>
              <?php
            endwhile;

        else :

        endif;

        ?>

      </div>

    <?php }

    echo $args[ 'after_widget' ];
    
  }

  function update( $new_instance, $old_instance ){

    return $new_instance;
  }

}


function register_custom_widgets(){
  
  register_widget( 'HelpfulLinks' );

}
add_action( 'widgets_init', 'register_custom_widgets' );