add_action( 'admin_footer', 'my_action_javascript' ); // Write our JS below here
function my_action_javascript()
global $wpdb;
$pageposts = $wpdb->get_var("SELECT max(menu_order) FROM $wpdb->posts WHERE post_status="publish" AND post_type="post_trainers"");
?>
<script type="text/javascript" >
jQuery(document).ready(function($) {
var data = {
'action': 'my_action',
'whatever': <?=$pageposts?>
};
$.post(ajaxurl, data, function(response) {
if($('#menu_order').val()=='' || $('#menu_order').val()=='0')
$('#menu_order').val(response);
});
});
</script> <?php
}
add_action( 'wp_ajax_my_action', 'my_action_callback' );
function my_action_callback() {
global $wpdb; // this is how you get access to the database
$whatever = intval( $_POST['whatever'] );
$whatever += 1;
echo $whatever;
wp_die(); // this is required to terminate immediately and return a proper response
}
I was fix this issue Yesterday