我在我的网站上的许多媒体上传上都贴上了标签，上面有各种产品的名称。目标是获得一个贴子列表，这些贴子已经标记了每个产品名称，但不会重复父贴子。
理想情况下，我可以显示循环1中的一个附件（实际显示标记的产品），并带有指向其post\\u父级的链接，但我只能从循环2中获取帖子缩略图（这些缩略图并不总是显示产品）以达到这一点。
我的大脑被炸了。有什么想法吗？
循环1-查询带有特定标记的附件。
$media_args = array(
\'post_type\' => \'attachment\',
\'posts_per_page\' => -1,
\'tax_query\' => array(
array(
\'taxonomy\' => \'products\',
\'field\' => \'term_id\',
\'terms\' => $product_tag
)
)
);
$media_items = new WP_Query($media_args);
if ($media_items->have_posts()) {
$parent = array();
while ($media_items->have_posts()) : $media_items->the_post();
// getting the post_parent and cleaning to weed out duplicates
$parent[] = get_post_field(\'post_parent\', $post->ID);
$parent_clean = array_unique($parent);
endwhile;
}
循环2-查询唯一帖子列表
$product_post_args = array(
\'post_type\' => \'post\',
\'posts_per_page\' => -1,
\'post__in\' => $parent_clean
);
$product_posts = new WP_Query($product_post_args);
if ($product_posts->have_posts()) { ?>
while ($product_posts->have_posts()) : $product_posts->the_post();
$img = wp_get_attachment_image_src( get_post_thumbnail_id($post->ID), \'browse\' );
echo $img[0];
endwhile;
}
最合适的回答,由SO网友:Stephen S. 整理而成
在用一些新鲜的眼光重新审视它之后，我决定在循环2中添加第三个循环，而不是让它按预期工作：
$media_args = array(
\'post_type\' => \'attachment\',
\'posts_per_page\' => -1,
\'tax_query\' => array(
array(
\'taxonomy\' => \'products\',
\'field\' => \'term_id\',
\'terms\' => $product_tag
)
)
);
// Loop 1 - To get the images with the desired tags
$media_items = new WP_Query($media_args);
if ($media_items->have_posts()) {
$parent = array();
while ($media_items->have_posts()) : $media_items->the_post();
// getting the post_parent and cleaning to weed out duplicates
$parent[] = get_post_field(\'post_parent\', $post->ID);
$parent_clean = array_unique($parent);
endwhile;
}
$product_post_args = array(
\'post_type\' => \'post\',
\'posts_per_page\' => -1,
\'post__in\' => $parent_clean
);
// Loop 2 - Get the posts which have the images from Loop 1 as attachments without duplicating the same post
$product_posts = new WP_Query($product_post_args);
if ($product_posts->have_posts()) {
while ($product_posts->have_posts()) : $product_posts->the_post();
$product_image_args = array(
\'post_type\' => \'attachment\',
\'posts_per_page\' => 1,
\'post_parent\' => $post->ID,
\'tax_query\' => array(
array(
\'taxonomy\' => \'productcats\',
\'field\' => \'term_id\',
\'terms\' => $product_tag
)
)
);
// Loop 3 - To get the first attachment with the desired tag for each post
$product_images = new WP_Query($product_image_args);
while ($product_images->have_posts()) : $product_images->the_post();
$img = wp_get_attachment_image_src( $post->ID, \'browse\' );
echo $img[0];
endwhile;
endwhile;
}
