我正在努力开发一个wordpress主题，在使用WP_Query获取自定义帖子类型后，遇到了以下问题，即我的页面高级自定义字段不可用，如下所示：
index.php代码段
//passing in the post id of page with advanced custom fields called 'home'
$indexPosts = new WP_Query("post_type" => "page", $post_id = $post->ID);
while($indexPosts->have_posts()){
$indexPosts->the_post();
//do stuff with home pages advanced field data, all fields available and working
get_field('somecustomfield_from_home_page'); //NON empty
//get custom post
$customPost = new WP_Query("post_type" => "mycustompost");
while($customPost->have_posts()){
$custom_post->the_post();
//do stuff with custom post data, all is working
}
wp_reset_postdata();
//trying to do stuff with home pages acf data, all fields empty
get_field('somecustomfield_from_home_page'); //empty
}
wp_reset_postdata();
我不确定为什么要使用自定义查询来输出主页帖子数据。这应该在默认查询下可用。我强烈建议为您的主页使用首页.php页面模板（如文档建议的那样）。如果这样做，您可以将所有内容简化为以下内容：
// Default query / Loop
if ( have_posts() ) : while ( have_posts() ) : the_post();
// do stuff with advanced field data
// This will use the $post_id from the default query
get_field('somecustomfield_from_home_page');
//get custom post
$customPost = new WP_Query("post_type" => "mycustompost");
if ( $customPost->have_posts() ) :
while ( $customPost->have_posts() ) : $custom_post->the_post();
//do stuff with custom post data, all is working
endwhile;
wp_reset_postdata();
endif;
// do stuff with home pages acf data again
get_field('somecustomfield_from_home_page');
endwhile; endif;