I also had some difficulty getting the $field['default_value'] to work in the acf/prepare_field. @dreiqbik got me on track (thanks!). You can obviously use another filter, but if you need to define the default value when preparing the field, using $field['value'] can imitate the $field['default_value'].
This will override any selected value though, so you’ll have to filter it yourself. Check if it already has a value set, and if you don’t know if the field allows for null, you should check for that too:
if(!$field['value'] && !$field['allow_null']) {
$field['value'] = 'YOUR DEFAULT VALUE';
}
I know this is a pretty old post, but if anyone else wanted the code to make this happen:
function sevenYearSelect($field) {
$currentYear = date('Y');
// Create choices array
$field['choices'] = array();
// Add blank first selection; remove if unnecessary
$field['choices'][''] = ' ';
// Loop through a range of years and add to field 'choices'. Change range as needed.
foreach(range($currentYear-1, $currentYear+5) as $year) {
$field['choices'][$number] = $year;
}
// Return the field
return $field;
}
add_filter('acf/load_field/key=field_0000000000000', 'sevenYearSelect');
Thanks John. This looks like it could be an ambitious project for my level. But very keen to give it a crack and learn some new things. Thanks for setting me on the right path! I really appreciate it.
Thanks John, the critical error was something else. Have fixed everything with your comments. And it’s now working perfectly. Thank you so much. You’ve been a huge help.
Ah thank you John! I did try that, but I must’ve made another mistake. Turns out it was an easy fix! Thank you very much.
I finally got it! I think I wasn’t declaring my variables clearly enough.
$row = get_field( 'document' );
$first_row = $row[0];
$first_row_file = $first_row[ 'file' ];
if( $first_row_file ) :
$download = '<div>Available!<div>This document is ready for download.</div></div>' ;
echo $download;
else :
$unavailable = '<div>Unavailable!<div>This document isn\'t ready yet. Please check back later.</div></div>' ;
echo $unavailable;
endif;
Now I can add more sophisticated content (like a download button) to display when there is a file to download, and a helpful message when there isn’t.
