WP_QUERY on serialised data

PHP
1

Hey Everyone,

I want to get posts from a custom post with a specific meta.
In the meta, there is a relation referred to as serialized data.

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When I take a look through the wp_query documentation I can only find a way to filter on a single meta_value (or I overlook it).

When we unserialize the data we get the next:

( [0] => 2 )

The 2 is a user (the post has a relation with users).
How can I get the posts from WP_QUERY where the meta trainer is 2, without changing the serialised data.

Things I have tried:


                [
                    'key' => 'trainer',
                    'value' => $currentUserId,
                    'compare' => 'IN'
                ],

But this doesn’t seem to work

2

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