Question

我想订购所有包含多个cutom字段的帖子（Wordpress 3）。例如，我有2个自定义情侣meta_key / meta_value：

" order_submenuexpositions / numeric "
" display_submenuexpositions / boolean "

我试过这样，但结果不是来自“order_submenuexpositions”meta_key的meta_value的订购者：

SELECT * FROM wp_posts 
LEFT JOIN wp_postmeta wpostmetaOrder ON ( wp_posts.ID = wpostmetaOrder.post_id AND wpostmetaOrder.meta_key = 'order_submenuexpositions' )
LEFT JOIN wp_postmeta ON wp_posts.ID = wp_postmeta.post_id 
LEFT JOIN wp_term_relationships wp_term_relationships ON (wp_posts.ID = wp_term_relationships.object_id)
LEFT JOIN wp_term_taxonomy wp_term_taxonomy ON (wp_term_relationships.term_taxonomy_id = wp_term_taxonomy.term_taxonomy_id)
WHERE wp_postmeta.meta_key = 'display_submenuexpositions'
AND wp_postmeta.meta_value = 'true'
AND wp_posts.post_status = 'publish' 
AND wp_posts.post_type = 'post' 
AND wp_term_taxonomy.taxonomy = 'category'
ORDER BY wpostmetaOrder.meta_value ASC,wp_postmeta.meta_value ASC

我该怎么做？

谢谢你！

ok解决了，这是因为meta_value sql字段类型是longtext而我试图对整数值进行排序..它不起作用。你必须在整数上转换类型，如下所示：

SELECT * FROM wp_posts 
LEFT JOIN wp_postmeta wpostmetaOrder ON ( wp_posts.ID = wpostmetaOrder.post_id AND wpostmetaOrder.meta_key = 'order_submenuexpositions' )
LEFT JOIN wp_postmeta ON wp_posts.ID = wp_postmeta.post_id 
LEFT JOIN wp_term_relationships wp_term_relationships ON (wp_posts.ID = wp_term_relationships.object_id)
LEFT JOIN wp_term_taxonomy wp_term_taxonomy ON (wp_term_relationships.term_taxonomy_id = wp_term_taxonomy.term_taxonomy_id)
WHERE wp_postmeta.meta_key = 'display_submenuexpositions'
  AND wp_postmeta.meta_value = 'true'
  AND wp_posts.post_status = 'publish' 
  AND wp_posts.post_type = 'post' 
  AND wp_term_taxonomy.taxonomy = 'category'
ORDER BY CAST(wpostmetaOrder.meta_value AS SIGNED) ASC,wp_postmeta.meta_value ASC`

Answer 1

实际上，您可以在不使用复杂SQL查询的情况下执行此操作以供将来参考。

这是一个例子：

$args = array(
'posts_per_page' => 250,
'post_type' => 'books',
'meta_query' => array(

    array(
        'key' => 'author',
        'value' => $author_name,
        'compare' => '=='
    ),

    array(
        'key' => 'publisher_id',
        'value' => $publisher_id,
        'compare' => '!=',
        'type' => 'NUMBER'
    )
)
);

$the_query = new WP_Query( $args );  while ( $the_query->have_posts() ) : $the_query->the_post();

// LOOP GOES HERE

endwhile;

您可以在“Meta_query”中添加其他数组以进行更深入的挖掘，您还可以了解wordpress codex中可用的不同类型的“比较”和“类型”选项。

http://codex.wordpress.org/Class_Reference/WP_Query#Custom_Field_Parameters

Wordpress查询订单按元键值发布

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