我有个问题。

<div class="list">
  <?php
    $categories = get_the_category();
    $category_id = $categories[0]->cat_ID;
    $args = array(
      \'posts_per_page\' => -1,
      \'offset\' => 0,
      \'orderby\' => \'date\',
      \'order\' => \'ASC\',
      \'cat\' => $category_id
    );
    $products = get_posts( $args );
  ?>
  <?php foreach ( $products as $post ) : setup_postdata( $post ); ?>
    <div class="list__item">
      <a href="<?php the_permalink(); ?>">
        <figure>
          <img src="<?php the_post_thumbnail_url(\'thumbnails--products\'); ?>" alt="">
        </figure>
        <h3><?php the_title(); ?></h3>
      </a>
    </div>
  <?php endforeach; wp_reset_postdata(); ?>
</div>

如果我理解正确，现在我应该显示来自我当前所在类别的帖子，因为我正在检索她的ID，但会显示来自主要类别帖子的帖子。