wp query - meta_query is overriding default search

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I'm using default search with get_search_form() function. I want to search also by custom fields, so I wrote a hook:

function search_products($query) {
        if (is_search() && $query->is_main_query() && !is_admin()) {
            $query->set('post_type', 'product');
            $my_custom_field = $query->query['s'];
    
            $meta_query = array(
                array(
                    'key'     => 'custom_field',
                    'value'   => $my_custom_field,
                    'compare' => 'LIKE',
                )
            );
            $query->set('meta_query', $meta_query);     
        }
    }
    
    add_action('pre_get_posts', 'search_products');

Problem is the search is not showing products filtered by title and also not showing products filtered by custom field. How to solve this?

本文标签： wp querymetaquery is overriding default search