Hey I got the same problem but I registered the Custom Field that contains the Post Field that I want to quary arg for the author = user with your MetaBox AIO Plugin and the GUI
I dont know where i have to put those i register the metabox with your plugin
Assume you have this code to register your meta box:
add_filter( 'rwmb_meta_boxes', 'prefix_register_meta_boxes' );
function prefix_register_meta_boxes( $meta_boxes ) {
$meta_boxes[] = array(
// Your meta box code goes here
);
}
Then change it to:
add_action( 'init', function() {
add_filter( 'rwmb_meta_boxes', 'prefix_register_meta_boxes' );
} );
function prefix_register_meta_boxes( $meta_boxes ) {
$meta_boxes[] = array(
// Your meta box code goes here
);
}
