option_prefix . "post_type"); return !empty($post_type); } function cmcal_cmb2_metabox_form($metabox_id, $key) { if (cmcal_setup_post_type_is_set()) { cmb2_metabox_form($metabox_id, $key); } else { $redirect_admin_page = admin_url('admin.php?page=cmcal_setup'); echo '

' . sprintf( __( 'You must first define a post type for your calendar. To do so, go here.', 'calendar-anything' ), $redirect_admin_page ) . '

'; } }