通过id从单页获取附件，并将其分页。（WordPress的）

问题描述：

How to get attachment from single page by ID, and set 12 img per page?

'post_parent' => 145, // not working, but without this param I get all attachments

<?php
                $paged = (get_query_var('paged')) ? get_query_var('paged') : 1;
                $attachment = new WP_Query( array(
                    'post_parent' => 145, // not working, but without this param I get all attachments
                    'post_status' => 'inherit',
                    'post_type' => 'attachment',
                    'post_mime_type' => 'image/jpeg,image/gif,image/jpg,image/png',
                    'posts_per_page'  => 12,
                    'paged'           => $paged
                ) );
                if ( $attachment->have_posts() ) :
                    while ( $attachment->have_posts() ) : $attachment->the_post(); 

            ?>
                        <div class="gallery__item"><a href="<?php echo wp_get_attachment_url( $attachment->ID , false ); ?>" data-fancybox><img src="<?php echo wp_get_attachment_url( $attachment->ID , false ); ?>" alt=""></a></div>
            <?php

                    endwhile; 
                    wp_reset_postdata();
                endif;
            ?>

如何按ID从单页获取附件，并在每页设置12 img？ p> \ n

'post_parent'=＆gt; 145，//没有工作，但没有这个参数我得到所有附件 p>

 ＆lt;？php 
 $ paged =（get_query_var（'paged'））？  get_query_var（'paged'）：1; 
 $ attachment = new WP_Query（array（
'post_parent'=＆gt; 145，//不工作，但没有这个参数我得到所有附件
'post_status'=＆gt;  'inherit'，
'post_type'=＆gt;'attachment'，
'post_mime_type'=＆gt;'image / jpeg，image / gif，image / jpg，image / png'，
'posrs_per_page'=＆gt;  12，
'paged'=＆gt; $ paged 
））; 
 if（$ attachment-＆gt; have_posts（））：
 while（$ attachment-＆gt; have_posts（））：$ attachment-＆gt;  the_post（）;  
 
？＆gt; 
＆lt; div class =“gallery__item”＆gt;＆lt; a href =“＆lt;？php echo wp_get_attachment_url（$ attachment-＆gt; ID，false）;？＆gt;”  data-fancybox＆gt;＆lt; img src =“＆lt;？php echo wp_get_attachment_url（$ attachment-＆gt; ID，false）;？＆gt;”  alt =“”＆gt;＆lt; / a＆gt;＆lt; / div＆gt; 
＆lt;？php 
 
 endwhile;  
 wp_reset_postdata（）; 
 endif; 
？＆gt; 
  code>  pre> 
  div>

答

I found out what the problem was. I use post_parent and tells post ID, thinking that take all attachments from this post, but WP_Query returns me ID's of images.

I get all id's of images in array with get_post_gallery()

$gal = get_post_gallery(11,false);

and explode it

$ids = explode(',', $gal['ids']);

after then everything worked!

also I use post__in insted post_parent

The final code:

<?php
                $gal = get_post_gallery(11,false);
                $ids = explode(',', $gal['ids']);
                $paged = (get_query_var('paged')) ? get_query_var('paged') : 1;
                $attachment = new WP_Query( array(
                    'post__in' => $ids,
                    'post_status' => 'inherit',
                    'post_type' => 'attachment',
                    'post_mime_type' => 'image/jpeg,image/gif,image/jpg,image/png',
                    'posts_per_page'  => 12,
                    'paged'           => $paged
                ) );
                if ($attachment -> have_posts() ) :
                    while ($attachment -> have_posts() ) : $attachment -> the_post(); 
            ?>
                        <div class="gallery__item"><a href="<?php echo wp_get_attachment_url(); ?>" data-fancybox><img src="<?php echo wp_get_attachment_url(); ?>" alt=""></a></div>
            <?php

                    endwhile; 
                    wp_reset_postdata();
                endif;
            ?>

答

By looking to the code, you are using post_parent which is quiet clearly explain in

Codex WP Query

which basically says that only the post that has child will be return of the currently provided post id i.e. 145.

I think you have to use post_parent__in than the current one.

Hope this works for you.

Thank You

通过id从单页获取附件，并将其分页。 （WordPress的）

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通过id从单页获取附件，并将其分页。（WordPress的）