Reply To: How do you create post_title from another field(s) in ACF Pro?

• jibbius

• October 15, 2015 at 8:59 pm

The following works for me:

<?php
/*
Plugin Name: Voucher Posts
Description: Add voucher posts
Author: jibbius
Text Domain: voucherpost
Version: 1.0
*/

class VoucherPost {
	function __construct() {
		$this->post_type   = 'voucher';
		$this->text_domain = 'voucherpost';

		add_action( 'init', array( &$this, 'register_this_post_type' ) );
		add_action( 'acf/save_post', array( &$this, 'save_post_handler' ), 20 );
	}

	//Registers the post type
	function register_this_post_type() {
		register_post_type( $this->post_type,
			array(
				'labels'          => array(
					'name'               => __( 'Vouchers', $this->text_domain ),
					'singular_name'      => __( 'voucher', $this->text_domain ),
					'all_items'          => __( 'All vouchers', $this->text_domain ),
					'add_new'            => __( 'Add New', $this->text_domain ),
					'add_new_item'       => __( 'Add New voucher', $this->text_domain ),
					'edit'               => __( 'Edit', $this->text_domain ),
					'edit_item'          => __( 'Edit voucher', $this->text_domain ),
					'new_item'           => __( 'New voucher', $this->text_domain ),
					'view_item'          => __( 'View voucher', $this->text_domain ),
					'search_items'       => __( 'Search vouchers', $this->text_domain ),
					'not_found'          => __( 'Nothing found in the Database.', $this->text_domain ),
					'not_found_in_trash' => __( 'Nothing found in Trash', $this->text_domain ),
					'parent_item_colon'  => ''
				),
				'description'     => __( 'A voucher', $this->text_domain ),
				'public'          => false,
				'show_ui'         => true,
				'query_var'       => true,
				'menu_position'   => 5,
				'menu_icon'       => 'dashicons-tickets-alt',
				'capability_type' => 'post',
				'hierarchical'    => false,
				'supports'        => false
//              Alternatively:
//              supports' => array('title','thumbnail'),
			)
		); /* end of register post type */
	}

	/* 'On save' events */
	function save_post_handler( $post_id ) {
		if ( get_post_type( $post_id ) == $this->post_type ) {
			$data['ID']         = $post_id;
			$title              = get_field( 'voucher_id', $post_id );
			$data['post_title'] = $title;
			$data['post_name']  = sanitize_title( $title );
			wp_update_post( $data );
		}
	}
}

new VoucherPost();

In response to;
“However this code conflicts with editing post titles from the back-end.”
(above)…

My code works, whether the post is from the backend OR frontend.
If you wanted to disable behaviour in backend, you could add this somewhere:
if(is_admin()) return;