So I am basically giving users the ability to set a featured post as a drop down, and in addition to storing the ID of the post to feature, I want to include other info – like the title, excerpt, and featured image path, and have these reflect the most up to date values for the post.

Right now, I created a field template called ‘preview-post’ which displays those values to the WordPress user, but I haven’t figured out how to store the values in the DB as part of that.

Here’s my fields:

piklist('field', array(
  'type' => 'group',
  'label' => 'Primary Feature',
  'field' => 'primary_feature',
  'fields' => array(
    array(
      'type' => 'select',
      'field' => 'primary_feature_post',
      'label' => 'Choose Post',
      'columns' => 6,
      'choices' => piklist_get_posts()),
    array(
      'type' => 'preview-post',
      'label' => 'Preview',
      'columns' => 6,
      'attributes' => array(
        'field' => 'primary_feature',
        'subfield' => 'primary_feature_post'
      )
    )
  )
));

and the field template is ‘preview-post’:

<?php array_push($attributes['class'], 'piklist-field-part'); ?>
<div
  <?php echo piklist_form::attributes_to_string($attributes); ?>
  id="<?php echo piklist_form::get_field_id($arguments); ?>"
  name="<?php echo piklist_form::get_field_name($arguments); ?>">
  <?php
    $post_meta = get_post_meta($post->ID, [$attributes['field']][0], false);

    foreach ($post_meta as $key => $val) {
      if (array_key_exists($key, $post_meta)) {
        foreach($val as $subkey => $subval) {
          if (array_key_exists($attributes['subfield'], $val)) {
            $the_post = get_post($subval);
            echo get_the_post_thumbnail($the_post->ID,'thumbnail') . '<h2>' . $the_post->post_title . '</h2><p>' . $the_post->post_excerpt . '</p>';
          }
        }
      }
    }

  ?>
</div>

How do I modify my field template to save the fields to the DB?

Also, I need to be able to store the results so that they are updated in the DB should the title, excerpt, or image path be updated.