在WordPress中僅粘貼帖子的分頁

Question

我只需要對標記爲粘貼的帖子進行分頁。不需要顯示不粘貼的帖子。

我在functions.php文件

function sticky_pagination() 
{ 
    //global $wp_query; 
    $big = 999999999; 

    $args = array('post_type' => 'post', 'posts_per_page' => 5, 'post__in' => get_option('sticky_posts')); 

    $wp_query = new WP_Query($args); 

    echo paginate_links(array(
     'base' => str_replace($big, '%#%', get_pagenum_link($big)), 
     'format' => '?paged=%#%', 
     'current' => max(1, get_query_var('paged')), 
     'total' => $wp_query->max_num_pages 
    )); 

    wp_reset_postdata(); 
} 

但分頁不工作的權利了這一點，我得到一個標題已經發出錯誤/頁/ 1 /但帖子索引頁面上它沒有做到這一點， on/page/2 /它也不會給我。另外，它會拋出一個更奇怪的prev/next的額外回聲。

Answer 1

如果您不知道WP_Query類中的粘性帖子是如何工作的，那麼只查詢某些粘性帖子或試圖查看粘性帖子列表可能會非常棘手。

讓我們快速瀏覽一下膠粘如何在WP_Query類中查詢

// Put sticky posts at the top of the posts array 
$sticky_posts = get_option('sticky_posts'); 
if ($this->is_home && $page <= 1 && is_array($sticky_posts) && !empty($sticky_posts) && !$q['ignore_sticky_posts']) { 
    $num_posts = count($this->posts); 
    $sticky_offset = 0; 
    // Loop over posts and relocate stickies to the front. 
    for ($i = 0; $i < $num_posts; $i++) { 
     if (in_array($this->posts[$i]->ID, $sticky_posts)) { 
      $sticky_post = $this->posts[$i]; 
      // Remove sticky from current position 
      array_splice($this->posts, $i, 1); 
      // Move to front, after other stickies 
      array_splice($this->posts, $sticky_offset, 0, array($sticky_post)); 
      // Increment the sticky offset. The next sticky will be placed at this offset. 
      $sticky_offset++; 
      // Remove post from sticky posts array 
      $offset = array_search($sticky_post->ID, $sticky_posts); 
      unset($sticky_posts[$offset]); 
     } 
    } 
    // If any posts have been excluded specifically, Ignore those that are sticky. 
    if (!empty($sticky_posts) && !empty($q['post__not_in'])) 
     $sticky_posts = array_diff($sticky_posts, $q['post__not_in']); 
    // Fetch sticky posts that weren't in the query results 
    if (!empty($sticky_posts)) { 
     $stickies = get_posts(array(
      'post__in' => $sticky_posts, 
      'post_type' => $post_type, 
      'post_status' => 'publish', 
      'nopaging' => true 
     )); 
     foreach ($stickies as $sticky_post) { 
      array_splice($this->posts, $sticky_offset, 0, array($sticky_post)); 
      $sticky_offset++; 
     } 
    } 
} 

正如你可以看到，如果我們傳遞正確的參數WP_Query和is_home()返回true，WP_Query將返回所有置頂文章不管。當您使用post__in參數時會發生這種情況。這意味着什麼，如果你只是有條件地查詢粘性帖子，不管你作爲參數傳遞了什麼，你總是會將所有粘性帖子返回到第一頁。要阻止這種情況發生，我們需要將ignore_sticky_posts設置爲1，以便我們避免查詢所有粘性帖子。

請注意post__in。在傳遞任何東西給post__in之前，您應該始終確保您有一個有效的帖子ID。如果你傳遞一個空數組，就像沒有粘性帖子一樣，所有的帖子都會返回，不管它是否如期望的那樣返回一個空數組，所以要注意這個

讓我們看看可能的解決方案（未經測試且要求PHP 5.4+）

// Get all sticky posts 
$stickies = get_option('sticky_posts'); 
// Make sure we have sticky posts 
if ($stickies) { 
    // We have stickies, lets set our query 
    $args = [ 
     'post__in'   => $stickies, 
     'ignore_sticky_posts' => 1, 
     'posts_per_page'  => 5, 
     'paged'    => get_query_var('paged', 1), 
     // Any other arguments 
    ]; 
    $q = new WP_Query($args); 

    // YOUR LOOP 
    while ($q->have_posts()) { 
     $q->the_post(); 

      // YOUR OUTPUT 

    } 

    /** 
    * Lets use my pagination function 
    * @link http://wordpress.stackexchange.com/a/172818/31545 
    */ 
    if (function_exists('')) { 
     $paging_args = [ 
      'query'   => $q 
     ]; 
     echo get_paginated_numbers($paging_args); 
    } 

    wp_reset_postdata(); 
}