custom fields in relevanssi's search results

<?php
/*
 * Render content for Relevanssi excerpt. This will load custom fields!
 */
add_filter('relevanssi_excerpt_content', 'my_relevanssi_excerpt_content');
function my_relevanssi_excerpt_content($content, $post = '', $query = ''){
  //Uncomment the following line if the custom fields belong to a single post-type. Increases performance!
  //if ( $post->post_type != 'my_post-type' ) return $content;

  //Fill in your custom field names here:
  $fields = array('myfield1', 'myfield1');
  foreach($fields as $field){
    //pay attention to $single (http://codex.wordpress.org/Function_Reference/get_post_meta)
    $field_value = get_post_meta($post->ID, $field, TRUE);
    $content .= ' '. ( is_array($field_value) ? implode(' ', $field_value) : $field_value );
  }
  return $content;
}