將自定義創建的帖子對象添加到Wordpress循環中

Question

我們有一個處理事件的插件。該插件不處理重複發生的事件，因此我們希望添加此功能。

我有一個已經寫好的查詢，正在運行並拉動我們想要的事件。它看起來像這樣：

SELECT posts.*, metaStartDate.meta_value as EventStartDate, meta.meta_value as EventRepeats, metaTimeSpans.meta_value as EventTimeRanges 
FROM $wpdb->posts posts 
LEFT JOIN $wpdb->postmeta meta ON (posts.ID = meta.post_id AND meta.meta_key = '_EventRepeats') 
LEFT JOIN $wpdb->postmeta metaStartDate ON (posts.ID = metaStartDate.post_id AND metaStartDate.meta_key = '_EventStartDate') 
LEFT JOIN $wpdb->postmeta metaRepeatsUntil ON (posts.ID = metaRepeatsUntil.post_id AND metaRepeatsUntil.meta_key = '_EventRepeatsUntil') 
LEFT JOIN $wpdb->postmeta metaTimeSpans ON (posts.ID = metaTimeSpans.post_id AND metaTimeSpans.meta_key = '_EventTimeRanges') 
WHERE posts.post_type = 'tribe_events' 
AND posts.post_status = 'publish' 
AND meta.meta_value != 'once' 
AND '$queryDate 00:00:00' BETWEEN metaStartDate.meta_value AND metaRepeatsUntil.meta_value 

正如我所說，這是獲取我們想要的事件，但我怎麼然後將它們添加到WordPress的循環，使物像have_posts()和the_post()工作？

編輯：它看起來像正確的答案是使用WP_Query，但有沒有辦法像WP_Query那樣做一個大的查詢？

Answer 1

你是正確的：你應該使用WP_Query每當處理本地WordPress的數據庫表，甚至爲你的自定義信息。儘管如此，WordPress provides the wpdb class（您需要必須閱讀此鏈接）用於數據庫操作，其中應該用於使用您自己的自定義數據庫表。

所以，如果你真的要執行該查詢，你應該使用wpdb's SELECT Generic Result，並添加一個小調整到"convert" it to a WordPress loop：

<?php 
// Your custom query 
$querystr = " 
    SELECT posts.*, metaStartDate.meta_value as EventStartDate, meta.meta_value as EventRepeats, metaTimeSpans.meta_value as EventTimeRanges 
    FROM $wpdb->posts posts 
    LEFT JOIN $wpdb->postmeta meta ON (posts.ID = meta.post_id AND meta.meta_key = '_EventRepeats') 
    LEFT JOIN $wpdb->postmeta metaStartDate ON (posts.ID = metaStartDate.post_id AND metaStartDate.meta_key = '_EventStartDate') 
    LEFT JOIN $wpdb->postmeta metaRepeatsUntil ON (posts.ID = metaRepeatsUntil.post_id AND metaRepeatsUntil.meta_key = '_EventRepeatsUntil') 
    LEFT JOIN $wpdb->postmeta metaTimeSpans ON (posts.ID = metaTimeSpans.post_id AND metaTimeSpans.meta_key = '_EventTimeRanges') 
    WHERE posts.post_type = 'tribe_events' 
    AND posts.post_status = 'publish' 
    AND meta.meta_value != 'once' 
    AND '$queryDate 00:00:00' BETWEEN metaStartDate.meta_value AND metaRepeatsUntil.meta_value 
"; 

// Execute the query using wpdb and fetch results as objects 
$pageposts = $wpdb->get_results($querystr, OBJECT); 

if ($pageposts){ 
    global $post; 
    foreach ($pageposts as $post){ 

     // Here's the loop magic 
     setup_postdata($post); 

     // Now you are free to use any common loop functions, such as 
     // the_ID(); 
     // the_permalink(); 
     // the_title(); 
     // and all others. 
     ?> 

     <div class="post" id="post-<?php the_ID(); ?>"> 
      <h2> 
       <a href="<?php the_permalink() ?>" rel="bookmark" title="Permanent Link to <?php the_title(); ?>"> 
        <?php the_title(); ?> 
       </a> 
      </h2> 
      <small><?php the_time('F jS, Y') ?> <!-- by <?php the_author() ?> --></small> 
      <div class="entry"> 
       <?php the_content('Read the rest of this entry »'); ?> 
      </div> 
      <p class="postmetadata">Posted in <?php the_category(', ') ?> | <?php edit_post_link('Edit', '', ' | '); ?> 
      <?php comments_popup_link('No Comments »', '1 Comment »', '% Comments »'); ?></p> 
     </div> 
     <?php 
    } 
}else { 
    // No results found 
} 
?> 

Answer 2

@ turboguy50035您可以使用內置的部落活動日曆插件查詢機制鉤入'pre_get_posts'查詢過濾器。雖然在我看來，最好的選擇就是獲得PRO插件，它已經將重複添加到查詢中。