Pre_Get_Posts()操作中的多个orderby参数

引用@Otto\'s response 对于我提出的一个关于按多个字段排序的问题，他说：

无法使用朴素的WP\\U查询。使用posts\\u orderby过滤器添加您自己的订购字符串。

function my_order($orderby) { 
    global $wpdb; 
    return "{$wpdb->posts.post_author} ASC, {$wpdb->posts.post_date} DESC"; 
} 
add_filter( \'posts_orderby\', \'my_order\' ); 

$blah = new WP_Query(...); 

remove_filter( \'posts_orderby\', \'my_order\' );

-奥托

这似乎是在新调用WP\\U查询-->时所采用的方式，我将如何在pre_get_posts() 具有两个元字段的操作，默认排序为？：

function mouldings_sort($query) {
    if ($query->is_main_query() && is_tax(array(\'wood_types\',\'profile_categories\',\'combination_categories\'))) {

        $query->set(\'meta_key\', \'_mouldings_dimensions_height\');
        $query->set(\'order\', \'DESC\');
        $query->set(\'orderby\',\'meta_value_num\');
    }

}
add_action(\'pre_get_posts\',\'mouldings_sort\');

我之前尝试过简单地添加另一个元字段，如下所示：

$query->set(\'meta_key\', array(\'_mouldings_dimensions_height\', \'_mouldings_dimension_width\'));
$query->set(\'orderby\',\'meta_value_num\');

默认排序返回为title 因此：

 $query->set(\'orderby\',\'meta_value_num title\');

但看起来不像meta_key 可以接受阵列和我的title 回退回到奥托对此事的最初回应。任何帮助都将不胜感激。谢谢

// Add additional query args that are allowed by the API by default pre_get_posts // Modify the query herself posts_clauses // Inspect the resulting string - test this one in for e.g. phpMyAdmin posts_request

// Modify the original query parts function wpse70214_pre_get_posts( $query ) { var_dump( $query ); return $query; } add_filter( \'pre_get_posts\', \'wpse70214_pre_get_posts\' ); // Modify the resulting query string parts function wpse70214_posts_clauses( $pieces ) { var_dump( $pieces ); return $pieces; } add_filter( \'posts_clauses\', \'wpse70214_posts_clauses\' ); // Then check the result function wpse70214_posts_request( $query_string ) { var_dump( $query_string ); return $query_string; } add_action( \'posts_request\', \'wpse70214_posts_request\' );

/** * Posts orderby filter. The filter will be added using pre_get_posts outside the class * using the pre_get_posts action allows us to do checks for what page etc... * @return string, new MySQL ORDER BY clause */ function wpse_order_by() { global $wpdb; return $wpdb->prepare( "$wpdb->postmeta.meta_value+0 DESC, post_title DESC" ); } /** * Pre get posts filter for adding secondary fall back ORDER BY clause to MySql query * @uses remove_filter(), This filter removes itself after it runs to prevent it from affecting other queries on the same page. * @uses add_filter() * @param object|array $query the current $query object */ function wpse_post_order_pre( $query ) { if ($query->is_main_query() && is_tax(array(\'wood_types\',\'profile_categories\',\'combination_categories\'))) { /** remove_filter() is used to prevent this affecting additional queries on the page */ remove_filter( current_filter(), __FUNCTION__ ); add_filter( \'posts_orderby\', \'wpse_order_by\' ); } } add_action( \'pre_get_posts\', \'wpse_post_order_pre\' );

使用新的WP-Query()从循环中过滤后期格式；

嗨，我目前正在为我的博客构建一个主题。下面的代码指向最新的帖子（特色帖子）。因为这将有一个不同的风格比所有其他职位。然而我想过滤掉帖子格式：链接使用我在循环中定义的WP查询，因为它给我带来了更多的灵活性。我该怎么做呢？ <?php $featured = new WP_Query(); $featured->query(\'showposts=1\'); ?> <?php while ($featured->have_post

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