Question

我试图根据州的位置查询状态。来自map_location元键的地址字符串示例：

BATEMANS BAY NSW 2536 Australia
BATEMANS BAY NEW SOUTH WALES 2536 Australia

我无法弄清楚如何让'map_location'值='新南威尔士州'或'新南威尔士'

$paged = ( get_query_var( 'paged' ) ) ? get_query_var( 'paged' ) : 1;

$args = array(
    'post_type' => 'post',
    'paged' => $paged,
    'meta_query' => array(
        array(
            'key' => 'listing_status',
            'value' => 'current'
        ),
       array(
            'key' => 'map_location',
            'compare' => 'LIKE',
            'value' => 'NSW'
       )
    )
);

$state_posts = new WP_Query($args);

Answer 1

您可以这样做： -

$args = array(
    'post_type' => 'post',
    'paged' => $paged,
    'meta_query' => array(
       array(
            'key' => 'listing_status',
            'value' => 'current'
       ),
       array(
            'key' => 'map_location',
            'compare' => 'LIKE',
            'value' => 'NSW'
       ),
       array(
            'key' => 'map_location',
            'compare' => 'LIKE',
            'value' => 'NEW SOUTH WALES'
       )
    )
);

Answer 2

在这种情况下，问题是部分匹配，分两步执行：找到正确的帖子，然后查询它们。在使用分页编辑后尝试此（经过测试）的解决方案（在第二次查询时再次会更容易，但会降低性能）：

$meta_key1 = 'map_location';
$meta_value1 = '%NSW%';
$meta_key2 = 'map_location';
$meta_value2 = '%NEW SOUTH WALES%';
$meta_key3 = 'listing_status';
$meta_value3 = 'current';
if (get_query_var('paged')) $page_no = get_query_var( 'paged' ) - 1; else $page_no = 0;
$posts_per_page = 1;

global $wpdb;
$postids = $wpdb->get_col( $wpdb->prepare( 
  "
  SELECT      key2.post_id
  FROM        $wpdb->postmeta key2
  INNER JOIN  $wpdb->postmeta key1 
          ON key1.post_id = key2.post_id
          AND ((key1.meta_key = %s AND key1.meta_value LIKE %s) OR (key1.meta_key = %s AND key1.meta_value LIKE %s))
  WHERE       key2.meta_key = %s AND key2.meta_value = %s LIMIT %d , %d
",
$meta_key1,
$meta_value1,
$meta_key2,
$meta_value2,
$meta_key3, 
$meta_value3,
$page_no,
$posts_per_page
) ); 

$the_query = new WP_Query( array('post__in' => $postids ) );

BTW，没有部分匹配解决方案要简单得多：

$args = array(
'meta_query' => array(
  array(
  'key' => 'listing_status',
  'value' => 'current',
  'meta_compare' => '='
   ),
  array(
  'key' => 'map_location',
  'value' => array('NEW SOUTH WALES','BATEMANS BAY NEW SOUTH WALES 2536 Australia'),
  'meta_compare' => 'IN'
   )
 )
);
$the_query = new WP_Query($args);

如果值不存在，如何编辑数组值

2 个答案: