Custom Query Wrangler Field

<?php
/*
Plugin Name: Custom QW Field Example
Description: Example of custom Query Wrangler field with $post and $field parameters.
Author: Jonathan Daggerhart
Version: 1.0
*/
 
add_filter('qw_fields', 'custom_qw_field');
 
function custom_qw_field($fields)
{
  $fields['custom_qw_field'] = array(
    'title' => 'Custom QW Field',
    'description' => 'Just an example of making your own custom fields with callbacks.',
    'output_callback' => 'get_custom_qw_field',
    'output_arguments' => true, // this provides the $post and $field parameters to the output_callback
  );
  return $fields;
}
 
/*
 * This is just a random custom function that returns some html.
 *
 * @param object $this_post - the WP post object
 * @param array $field - the QW field.  Useful if a field has custom settings (not shown in this example).
 * @param array $tokens - Available output values from other fields
 */
function get_custom_qw_field($this_post, $field, $tokens){
  // since this field is executed with "the loop", you can use most WP "template tags" as normal
  // you can do anything you need here, as long as you return (not echo) the HTML you want to display.
  
  $author = get_the_author();
  // this would provide the same results
  // $author = get_the_author_meta('display_name', $this_post->post_author);
  
  return "This post is authored by: ".$author;
}