我正在尝试根据自定义元框选择显示多篇文章。我目前使用CMB2作为框架，在后端显示CMB。ID为work\\u assign的选择字段正在调用另一个名为fleet的CPT中的所有帖子标题。下面是我的代码，用于显示CMB2 select type，然后显示post type fleet中的标题。

$work->add_field( array(
    \'name\'          => \'Assign\',
    \'desc\'          => \'assign a vehicle\',
    \'id\'            => $prefix . \'_assign\',
    \'type\'          => \'select\',
    \'options\'       => get_fleettype_options(\'fleettype\'),
));
//ASSIGN A FLEET

function get_fleettype_options($a) {
$args = array(
    \'post_type\'         => \'fleet\',
    \'orderby\'           => \'ID\',
    \'post_status\'       => \'publish\',
    \'order\'             => \'ASC\',
    \'posts_per_page\'    => -1 // this will retrive all the post that is published 
);
$result = new WP_Query( $args );
$title_list[\'\'] = "Select a Vehicle";

if ( $result-> have_posts() ) :
while ( $result->have_posts() ) : $result->the_post();
    $title_list[get_the_ID()] = get_the_title();   
endwhile;
endif; 
wp_reset_postdata();
    
return $title_list;
}

在fleet的单个页面上，我试图通过仅显示我选择的CPT（work\\u order）来显示我的CPT（work\\u order）。例如，将工单2、3和4分配给车队1。当我转到震源组1的单个页面时，我想列出分配给该震源组的所有工单。目前，我下面的代码列出了所有CPT工作单，而不是所选的工作单

<?php                 
                    
 $custom = get_post_custom();
 $work_post_id = $custom["work__assign"][0];
 $args = array(
      \'post_type\' => \'work_order\', 
      \'p\' => $work_post_id,
      \'orderby\' => \'ASC\',
      \'posts_per_page\' => -99,
 );    
       $the_query = new WP_Query( $args ); 
       if ( $the_query->have_posts() ) : while ( $the_query->have_posts() ) : $the_query->the_post();
  ?>
            
   Display info
   <?php endwhile; wp_reset_postdata(); endif; ?>

根据所选内容显示帖子时，我遗漏了什么或做错了什么。

function get_gas_options($a) {
$args = array(
    \'post_type\'         => \'fleet\',
    \'orderby\'           => \'ID\',
    \'post_status\'       => \'publish\',
    \'order\'             => \'ASC\',
    \'posts_per_page\'    => -1 // this will retrive all the post that is published 
);
$result = new WP_Query( $args );
$title_list[\'\'] = "Assign a Vehicle";

if ( $result-> have_posts() ) :
while ( $result->have_posts() ) : $result->the_post();
    $title_list[get_the_ID()] = get_the_title();   
endwhile;
endif; 
wp_reset_postdata();
    
return $title_list;
}