Custom fields empty after refreshing page

Try adding this save function to see if it saves data function save_custom_artiesten_metabox_on_reload() { global $post; if (isset($_POST[‘oa_datum’]) && isset($_POST[‘oa_aanvang’]) && isset($_POST[‘oa_locatie’]) && isset($_POST[‘oa_toegang_prijs’])) { update_post_meta($post->ID, ‘oa_datum’, sanitize_text_field($_POST[‘oa_datum’])); update_post_meta($post->ID, ‘oa_aanvang’, sanitize_text_field($_POST[‘oa_aanvang’])); update_post_meta($post->ID, ‘oa_locatie’, sanitize_text_field($_POST[‘oa_locatie’])); update_post_meta($post->ID, ‘oa_toegang_prijs’, sanitize_text_field($_POST[‘oa_toegang_prijs’])); } } add_action(‘admin_init’, ‘save_custom_artiesten_metabox_on_reload’);

What is the easiest way to create a custom field archive?

To create a custom field archive in WordPress where posts are filtered by a user_submit_name custom field, follow these steps: Register a Query Variable: This enables WordPress to recognize and use this variable in the URL. function register_query_vars( $vars ) { $vars[] = ‘user_submit_name’; return $vars; } add_filter( ‘query_vars’, ‘register_query_vars’ ); Modify the Archive Query: … Read more