I have a custom post type called “careers”.

<?php
/**
 * Careers Post Type
 */

function _mchild_careers_post_type() {
    $labels = array(
        'name'                => _x( 'Careers', 'Post Type General Name', '_mchild' ),
        'singular_name'       => _x( 'Career', 'Post Type Singular Name', '_mchild' ),
        'menu_name'           => __( 'Careers', '_mchild' ),
        'name_admin_bar'      => __( 'Careers', '_mchild' ),
        'parent_item_colon'   => __( 'Parent Career:', '_mchild' ),
        'all_items'           => __( 'All Careers', '_mchild' ),
        'add_new_item'        => __( 'Add New Career', '_mchild' ),
        'add_new'             => __( 'Add New', '_mchild' ),
        'new_item'            => __( 'New Career', '_mchild' ),
        'edit_item'           => __( 'Edit Career', '_mchild' ),
        'update_item'         => __( 'Update Career', '_mchild' ),
        'view_item'           => __( 'View Career', '_mchild' ),
        'search_items'        => __( 'Search Careers', '_mchild' ),
        'not_found'           => __( 'None Found', '_mchild' ),
        'not_found_in_trash'  => __( 'None Found in Trash', '_mchild' ),
    );

    $args = array(
        'label'               => __( 'Careers', '_mchild' ),
        'description'         => __( 'Careers', '_mchild' ),
        'labels'              => $labels,
        'supports'            => array( 'title', 'editor','thumbnail', 'author', 'page-attributes', 'excerpt', 'revisions' ),
        'hierarchical'        => true,
        'public'              => true,
        'show_ui'             => true,
        'show_in_menu'        => true,
        'menu_position'       => 5,
        'menu_icon'           => 'dashicons-admin-site-alt3',
        'show_in_admin_bar'   => true,
        'show_in_nav_menus'   => true,
        'can_export'          => true,
        'has_archive'         => true,
        'exclude_from_search' => false,
        'publicly_queryable'  => true,
        'capability_type'     => 'page',
        'rewrite' => array('slug' => 'career', 'with_front' => true, 'hierarchical' => true),
        'query_var'           => true,
    );
    register_post_type( 'careers', $args );
}
add_action( 'init', '_mchild_careers_post_type', 0 );

By default, I would like to order all the listed posts under “careers”, in the wp-admin area, by title in either asc or desc order. What is the modern way of doing this? I tried the following but it didn’t work….

function set_post_order_in_admin($wp_query)
{

    global $pagenow;

    if (is_admin() && 'edit.php?post_type=careers' == $pagenow && !isset($_GET['orderby'])) {

        $wp_query->set('orderby', 'title');
        $wp_query->set('order', 'ASC');
    }
}

add_filter('pre_get_posts', 'set_post_order_in_admin', 5);

I also tried the following but no luck…

function posts_for_current_author($query) {

    if($query->is_admin) {

          if ($query->get('post_type') == 'careers')
          {
            $query->set('orderby', 'title');
            $query->set('order', 'ASC');
          }
    }
    return $query;
  }
  add_filter('pre_get_posts', 'posts_for_current_author');