Reply To: ACF 5.4 preview changes no longer works

• Elliot

• August 10, 2016 at 10:32 am

Hi @leapxd

Good news

This issue has now been fixed. Please re-download the plugin files and copy across the api/api-helpers.php file or make the following code change on line ~744:

function acf_verify_nonce( $value, $post_id = 0 ) {
	
	// vars
	$nonce = acf_maybe_get( $_POST, '_acfnonce' );
	
	
	// bail early if no nonce or if nonce does not match (post|user|comment|term)
	if( !$nonce || !wp_verify_nonce($nonce, $value) ) {
		
		return false;
		
	}
	
	
	// if saving specific post
	if( $post_id ) {
		
		// vars
		$form_post_id = (int) acf_maybe_get( $_POST, 'post_ID' );
		$post_parent = wp_is_post_revision( $post_id );
		
			
		// 1. no $_POST['post_id'] (shopp plugin)
		if( !$form_post_id ) {
			
			// do nothing (don't remove this if statement!)
			
		// 2. direct match (this is the post we were editing)
		} elseif( $post_id === $form_post_id ) {
			
			// do nothing (don't remove this if statement!)
			
		// 3. revision (this post is a revision of the post we were editing)
		} elseif( $post_parent === $form_post_id ) {
			
			// return true early and prevent $_POST['_acfnonce'] from being reset
			// this will allow another save_post to save the real post
			return true;
			
		// 4. no match (this post is a custom created one during the save proccess via either WP or 3rd party)
		} else {
			
			// return false early and prevent $_POST['_acfnonce'] from being reset
			// this will allow another save_post to save the real post
			return false;
			
		}
		
	}
	
	
	// reset nonce (only allow 1 save)
	$_POST['_acfnonce'] = false;
	
	
	// return
	return true;
		
}