我在中查询帖子时遇到问题functions.php. 这主要是在后端更新帖子，而不是在前端显示查询。我正在尝试获取所有使用状态帖子格式的帖子，如果变量为true，则更新一个元字段。
我的代码：
function status_alerts($query) { //start function
global $post; // set the global
$args = array( // all posts in the status post format
\'posts_per_page\' => -1,
\'taxonomy\' => \'post_format\',
\'field\' => \'slug\',
\'terms\' => array( \'post-format-status\' ),
\'operator\'=> \'IN\'
);
$alert_query = new WP_Query( $args ); while ( $alert_query->have_posts() ) : $alert_query->the_post(); //query post
if (get_post_meta( $post_id, \'breaking_news_status\', true ) == \'active\') { // if the post has a meta field called \'active\'
if ((get_post_meta($post_id, \'status_time_duration\', true) + + get_the_time(\'U\')) < date( \'U\', current_time( \'timestamp\', 0 ) )) { // if the \'status_time_duration\' plus the publish date is greater than the current time
update_post_meta($post_id, \'breaking_news_status\', \'archive\'); // add a check to \'archive\' to \'breaking_news_status\'
}
}
endwhile;
}
最合适的回答,由SO网友:Chetan Vaghela 整理而成
你必须用get_the_id（）替换$post_id；
function status_alerts($query) { //start function
global $post; // set the global
$args = array( // all posts in the status post format
\'posts_per_page\' => -1,
\'taxonomy\' => \'post_format\',
\'field\' => \'slug\',
\'terms\' => array( \'post-format-status\' ),
\'operator\'=> \'IN\'
);
$alert_query = new WP_Query( $args ); while ( $alert_query->have_posts() ) : $alert_query->the_post(); //query post
if (get_post_meta( get_the_ID(), \'breaking_news_status\', true ) == \'active\') { // if the post has a meta field called \'active\'
if ((get_post_meta(get_the_ID(), \'status_time_duration\', true) + + get_the_time(\'U\')) < date( \'U\', current_time( \'timestamp\', 0 ) )) { // if the \'status_time_duration\' plus the publish date is greater than the current time
update_post_meta(get_the_ID(), \'breaking_news_status\', \'archive\'); // add a check to \'archive\' to \'breaking_news_status\'
}
}
endwhile;
wp_reset_query();
}
