Load default value for gallery field

• physalis

• May 14, 2021 at 3:05 am

Hi there,
I know how to pre-fill fields like text, WYSIWG or files, but struggle with the gallery field (image array) being pre-filled by a field from an Options page, like so:

function default_photos( $field_photos ) {
		
     $photos = get_field('artist_photos', 'option');
		
     $field_photos['default_value'] = $photos;
     return $field_photos;
		 
}

add_filter('acf/load_field/name=press_photos', 'default_photos');

I believe this has something to do with the field being saved as an array and expecting IDs to be used? Anyone an idea how to achieve a proper pre-fill as default for this field?

Thanks a lot in advance 😉

• physalis

• May 14, 2021 at 3:16 am

And I just solved it myself. You need to create an array and fill it with each and every file’s ID, off you go:

function default_photos( $field_photos ) {
		
    $photos = get_field('artist_photos', 'option');
	
	$array = array();

	foreach ($photos as $photo) {
		$id = $photo['ID'];
		array_push($array, $id);
	};
		
     $field_photos['default_value'] = $array;
     return $field_photos;
		 
}

add_filter('acf/load_field/name=press_photos', 'default_photos');