Update custom field with Cron Job in WordPress - wordpress

Question

I am trying to setup a cron job for a custom post type (Job Listings), that contains two ACF custom fields.
Datepicker – User can choose closing date of the job ( ‘job_listing_closing_date’ )
Radio field – Open & Closed choices. ( ‘job_listing_status’ )
I need the radio field to change from ‘Open’ to ‘Closed’ in the backend post edit screen if the job_listing_closing_date has passed. Here is my code at the moment which is located within ‘/wp-content/themes/themename/assets/functions/cpt-job-listings.php file.
I’ve added the below to code to the website but nothing happens.
Maybe the query is wrong or the ACF fields aren’t available in the file I have coded in?
// Create a cron job in order to check the custom field of 'job_listing_closing_date' against today's date. If the date has passed, set the job status to 'closed' and display different content on front-end.
// Scheduled Action Hook
function check_job_end_date( ) {
// WP_Query arguments
$listings = array (
'post_type' => 'job_listings',
'posts_per_page' => -1,
'meta_key' => 'job_listing_closing_date',
'meta_query' => array(
'key' => 'job_listing_closing_date',
'value' => date( 'Ymd' ),
'compare' => '<',
'type' => 'NUMERIC',
)
);
global $post;
if ($listings->have_posts()) {
while ($listings->have_post()) {
$listings->the_post();
update_field('job_listing_job_status', 'Closed');
//update_post_meta($post->ID, 'job_listing_job_status', 'Closed');
}
wp_reset_postdata();
}
}
// Schedule Cron Job Event
function job_listing_cron_job() {
if ( ! wp_next_scheduled( 'check_job_end_date' ) ) {
wp_schedule_event( date( 'Ymd' ), 'daily', 'check_job_end_date' );
}
}

Answer 1

I ended up rewriting most of the code and this is what worked:
// Create a cron job in order to check the custom field of 'job_listing_closing_date' against today's date. If the date has passed, set the job status to 'closed' and display different content on front-end.
// Scheduled Action Hook
function check_job_end_date( ) {
global $post;
$args = array(
'post_type' => 'job_listings',
'posts_per_page' => -1,
);
$listings = get_posts( $args );
foreach($listings as $post) : setup_postdata($post);
$today = date( 'Ymd' );
$expire = get_field( 'job_listing_closing_date', false, false );
$status = get_field( 'job_listing_job_status' );
if ( $expire < $today ) :
$status = 'Closed';
update_field( 'job_listing_job_status', $status );
endif;
endforeach;
}
// Schedule Cron Job Event
if ( ! wp_next_scheduled( 'job_listing_cron_job' ) ) {
wp_schedule_event( date( 'Ymd' ), 'daily', 'job_listing_cron_job' );
}
add_action( 'job_listing_cron_job', 'check_job_end_date' );

Answer 2

Try this:
$listings = array (
'post_type' => 'job_listings',
'posts_per_page' => -1,
'meta_key' => 'job_listing_closing_date',
'meta_query' => array(
'key' => 'job_listing_closing_date',
'value' => date( 'Ymd' ),
'compare' => '<',
'type' => 'DATE',
)
);
And sure is the correct date format date( 'Ymd' )