2013-03-03 69 views
1

我正在为wordpress中的每个类别创建新页面。帖子编辑器有一个自定义字段,允许选择扇区类型,这会在更新时应用于帖子。自定义字段key为:sector,对于自定义字段meta value选项可以使用SectorA,SectorBSectorC。我正在使用名为projects的自定义帖子类型。如何通过自定义字段值筛选新的WP查询?

我在这个环节http://weblogtoolscollection.com/archives/2008/04/13/how-to-only-retrieve-posts-with-custom-fields/

跟着意见,我怎样才能更改查询线在下面的代码,以便它通过一个部门的名称过滤循环,让使用SectorA。然后,我会重新使用每个模板页面上的代码,将值更改为其他页面上的SectorBSectorC

我认为这需要以某种方式改变:

$customPosts->query('showposts=5&sector=sectorA&post_type=projects');

目前,它的回声和sector value成功description value但显示所有的帖子。所以我试图限制它使用sector=sectorA sectorA似乎不工作?

此代码是在functions.php中:

function get_custom_field_posts_join($join) { 
global $wpdb, $customFields; 
return $join . " JOIN $wpdb->postmeta postmeta ON (postmeta.post_id = $wpdb->posts.ID and postmeta.meta_key in ($customFields)) "; 
} 
function get_custom_field_posts_group($group) { 
global $wpdb; 
$group .= " $wpdb->posts.ID "; 
return $group; 
} 

而且这个代码是在模板页面:

<?php /* Begin Custom Field Posts */ ?> 
<h2>Custom Posts</h2> 
<ul> 
<?php 
global $customFields; 
$customFields = "'sector', 'description'"; 
$customPosts = new WP_Query(); 
add_filter('posts_join', 'get_custom_field_posts_join'); 
add_filter('posts_groupby', 'get_custom_field_posts_group'); 
$customPosts->query('showposts=5&sector=sectorA&post_type=projects');//Uses same parameters as query_posts 
remove_filter('posts_join', 'get_custom_field_posts_join'); 
remove_filter('posts_groupby', 'get_custom_field_posts_group'); 

while ($customPosts->have_posts()) : $customPosts->the_post(); 
$sector = get_post_custom_values("sector"); 
$description= get_post_custom_values("description");?> 
<li><?php echo $sector[0]; ?></li> 
<li><?php echo $description[0]; ?></li><br /> 
<?php endwhile; ?> 
</ul> 
<?php /* End Custom Field Posts */ ?> 

感谢您的帮助

回答

0

可能这就是你想要什么

function get_custom_field_posts_join($join) { 
global $wpdb, $customSector; 
return $join . " JOIN $wpdb->postmeta postmeta ON (postmeta.post_id = $wpdb->posts.ID and postmeta.meta_key = 'sector' and postmeta.value = '$customSector') "; 
} 

和页面修改

$customSector='sectorA';//<--- insert this 
add_filter('posts_join', 'get_custom_field_posts_join'); 
+0

感谢您的帮助,我试过这个,但它不适合我。现在只显示标题,下面没有回复帖子。 – 2013-03-03 18:49:25

0

请尝试使用此代码。

<?php 
$sector = get_post_meta($post->ID, "sector", false); 
if ($sector[0]=="") { ?> 

<!-- If there are no custom fields, show nothing --> 

<?php } else { ?> 

<div class="sector"> 
    <h3>Title</h3> 

    <?php foreach($sector as $sector) { 
    echo '<blockquote><p>'.$sector.'</p></blockquote>'; 
    } ?> 

</div> 

<?php } ?>