WordPress query adjusting

adjustQuery.php

function univer_adjust_queries($query) {

    if(!is_admin() && is_post_type_archive('campus') && $query->is_main_query()){        
        $query->set( 'posts_per_page', -1);
    }

    if(!is_admin() && is_post_type_archive('program') && $query->is_main_query()){
        $query->set( 'orderby', 'title');
        $query->set( 'order', 'ASC');
        $query->set( 'posts_per_page', -1);
    }

    $today = date('Ymd');
    if(!is_admin() && is_post_type_archive('event') && $query->is_main_query()){
        $query->set( 'meta_key', 'event_date');
        $query->set( 'orderby', 'meta_value_num');
        $query->set( 'order', 'ASC');
        $query->set( 'meta_query', array(
              array(
                'key' => 'event_date',
                'compare' => '>=',
                'value' => $today,
                'type' => 'numeric'
              )
              ));
    }
}

add_action('pre_get_posts', 'univer_adjust_queries');