Question

我只需对标记为粘贴的帖子进行分页。不需要显示非粘性帖子。

我在functions.php文件中有这个

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();
}

但是分页不能正常工作，我在/ page / 1 /上得到了一个已经发送错误的标题，但在帖子索引页面上它并没有这样做，而在/ page / 2 /它也没有给我这个。此外，它还会抛出prev / next的额外回声，这很奇怪。

Answer 1

如果您不知道帖子在WP_Query课程中的效果如何，那么仅查询某些粘性帖子或尝试寻找粘贴帖子列表可能会非常棘手。

让我们快速查看WP_Query类

中如何查询粘性物

// 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++;
        }
    }
}

正如您所看到的，如果我们将正确的参数传递给WP_Query并且is_home()返回true，WP_Query将返回所有粘性帖子，无论如何。使用post__in参数时会发生这种情况。这意味着，如果您只是有条件地查询粘贴帖子，无论您作为参数传递什么，您都将在第一页上回复所有粘性帖子。要阻止这种情况发生，我们需要将ignore_sticky_posts设置为1，以便我们避免查询所有粘性帖子。

就在post__in的笔记上。在将任何内容传递给post__in之前，您应始终确保拥有有效的帖子ID数组。如果你传递一个空数组，就像没有粘贴帖子一样，所有的帖子都会被返回，它不会像你期望的那样返回一个空数组，所以要小心这个

让我们看一下可能的解决方案（未经测试，需要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();
}

仅限WordPress中粘贴帖子的分页

1 个答案: