How to set the post excerpt when creating or editing a post

Created by Phil Kurth, Modified on Wed, 29 Mar, 2023 at 3:09 PM by Phil Kurth

You may customise the post author (and many other properties) of a post using the af/form/editing/post_data filter. This filter will apply when creating or editing a post using Advanced Forms Pro form.

The following snippet demonstrates how to take the value from a submitted field and assign it to the post except using the filter:

<?php
add_filter( 'af/form/editing/post_data', function ( $post_data, $form, $args ) {

  // Check if this is the correct form. If not, return the post data as is.
  if ( $form['key'] !== '{YOUR_FORM_KEY}' ) {
    return $post_data;
  }

  // Set the post excerpt
  $post_data['post_excerpt'] = af_get_field( '{YOUR_FIELD_NAME_OR_KEY}' );

  return $post_data;
}, 10, 3 );