wordpress - WP_Query pass a unique identifier to be used for action hook later?

Question

I can't find it in the WP codex, but is there a way to pass a unique identifier for a custom WP_Query?

I want to identify a particular query so I can perform an action hook function on it.

$args = array(
    'my_custom_id' => 'customidentifier'   <-- something like this??
    'category_name' => 'news',
    'posts_per_page' => 3
);
 
$my_query = new WP_Query( $args );

Thanks in advance!

question from:https://stackoverflow.com/questions/65849916/wp-query-pass-a-unique-identifier-to-be-used-for-action-hook-later

Answer 1

Yes you can, It will be added to the query_vars property array, You can check for it later in actions for example

add_action(
    'pre_get_posts',
    function( $wp_query_obj ) {
        if ( ! empty( $wp_query_obj->query_vars['my_custom_id'] ) ) {
            // ...
        }
    },
    100,
    1
);