WordPress日期查詢返回誤報

Question

我有一個複雜的wp_query正在進行一個新的網站，它返回一些基於日期參數的誤報。

我希望用戶能夠根據開始和結束日期搜索事件。每個事件可以有多個「週期」，例如冬季和夏季。

的週期被設置在一個ACF中繼器場，所以在數據庫它看起來像這樣：

時期1：date_0_start-date/date_0_end-date
時期2：date_1_start-date/date_1_end-date
週期3：date_2_start-date/date_2_end-date
etc ...

如果只有一個句點，則查詢可以正常工作。但是，如果有多個時間段，則事件幾乎總是顯示出來，即使它們遠離用戶搜索範圍。

這裏的wp_query：

$args = array( 
    // general 
    'post__in' => $postIDs, 
    'post_type' => 'event', 
    'posts_per_page' => 10, 
    'paged' => $paged, 

    'meta_key' => $_SESSION['search']['sort-key'], 
    'orderby' => $_SESSION['search']['sort-by'], 
    'order' => 'ASC', 

    // category filter 
    'tax_query' => $taxQuery, 

    // date filter 
    'meta_query' => array(
     'relation' => 'AND', 
     array(
      'key' => 'date_%_start-date', 
      'value' => $when, 
      'compare' => '>=', 
      'type' => 'NUMERIC' 
     ), 
     array (
      'key' => 'date_%_end-date', 
      'value' => $when2, 
      'compare' => '<=', 
      'type' => 'NUMERIC' 
     ) 
    ) 


); 

我也被查詢之前添加這些功能稍微改變它允許%查詢是可變的：

function date_to($to) { 
    $to = str_replace("mt1.meta_key = 'date_%_end-date'", "mt1.meta_key LIKE 'date_%_end-date'", $to); 
    return $to; 
} 

function date_from($from) { 
    $from = str_replace("meta_key = 'date_%_start-date'", "meta_key LIKE 'date_%_start-date'", $from); 
    return $from; 
} 

然而，不會檢查%變量是否匹配，因此它可以獲得第1個時間段的開始日期和第2個時間段的結束日期，並使其與用戶查詢匹配。

任何想法，我可以改進這使它更穩健的多個時期？

[編輯] 查詢請求中的評論。

SELECT SQL_CALC_FOUND_ROWS wp_posts.ID 
FROM wp_posts 
INNER JOIN wp_term_relationships 
ON (wp_posts.ID = wp_term_relationships.object_id) 
INNER JOIN wp_postmeta 
ON (wp_posts.ID = wp_postmeta.post_id) 
INNER JOIN wp_postmeta AS mt1 
ON (wp_posts.ID = mt1.post_id) 
WHERE 1=1 
AND wp_posts.ID 
IN (1033,1039, ... more numbers ... 1264) 
AND (wp_term_relationships.term_taxonomy_id IN (3)) 
AND wp_posts.post_type = 'event' 
AND (wp_posts.post_status = 'publish' 
OR wp_posts.post_status = 'private') 
AND ((wp_postmeta.meta_key LIKE 'date_%_start-date' AND CAST(wp_postmeta.meta_value AS SIGNED) >= '20131201') 
AND (mt1.meta_key LIKE 'date_%_end-date' AND CAST(mt1.meta_value AS SIGNED) <= '20150101')) 
GROUP BY wp_posts.ID 
ORDER BY FIELD(wp_posts.ID, 1033,1039, ... more numbers ... 1264) 
LIMIT 0, 10 

[編輯]

基礎上，下面的答案，還是不太雖然工作更新後的代碼。

新功能：

function add_additional_where_condition($wp_query) { 
    $wp_query = str_replace("WHERE", "WHERE substr(wp_postmeta.meta_key, 1, 6) = substr(mt1.meta_key, 1, 6) AND ", $wp_query); 
    return $wp_query; 
} 

增加是與：
add_filter('posts_where', 'add_additional_where_condition');

SQL返回：

SELECT SQL_CALC_FOUND_ROWS wp_posts.ID 
FROM wp_posts 
INNER JOIN wp_term_relationships 
ON (wp_posts.ID = wp_term_relationships.object_id) 
INNER JOIN wp_postmeta 
ON (wp_posts.ID = wp_postmeta.post_id) 
INNER JOIN wp_postmeta AS mt1 
ON (wp_posts.ID = mt1.post_id) 
INNER JOIN wp_postmeta AS mt2 
ON (wp_posts.ID = mt2.post_id) 
WHERE 1=1 AND wp_posts.ID IN (503,475,529,473,469) 
AND (wp_term_relationships.term_taxonomy_id IN (2)) 
AND wp_posts.post_type = 'event' 
AND (wp_posts.post_status = 'publish' OR wp_posts.post_status = 'private') 
AND (wp_postmeta.meta_key LIKE 'date_%_start-date' 
AND (mt1.meta_key LIKE 'date_%_start-date' AND CAST(mt1.meta_value AS SIGNED) >= '20140611') 
AND (mt2.meta_key LIKE 'date_%_end-date' AND CAST(mt2.meta_value AS SIGNED) <= '20140618')) 
GROUP BY wp_posts.ID 
ORDER BY wp_postmeta.meta_value 
ASC LIMIT 0, 10 

Answer 1

我覺得你要找的東西不容易實現。

你需要的是這樣的：

AND ((wp_postmeta.meta_key LIKE 'date_%_start-date' AND CAST(wp_postmeta.meta_value AS SIGNED) >= '20131201') 
AND (mt1.meta_key LIKE 'date_%_end-date' AND CAST(mt1.meta_value AS SIGNED) <= '20150101')) 

AND substr(wp_postmeta.meta_key, 1, 6) = substr(mt1.meta_key, 1, 6) 

所以正確的開始日期將用正確的結束日期被使用。

你可以包括一個附加功能，將在WHERE子句的開頭添加此條件：

function add_additional_where_condition($where) { 
    $where .= " AND substr(wp_postmeta.meta_key, 1, 6) = substr(mt1.meta_key, 1, 6) "; 
    return $where; 
} 

兩個substr()應返回相同date_#值。

希望這可以幫助。

Answer 2

您需要meta_query改變type。

Documents說： -

type (string) -> Custom field type. 

Possible values are:- 'NUMERIC', 'BINARY', 'CHAR', 'DATE', 'DATETIME', 'DECIMAL', 'SIGNED', 'TIME', 
'UNSIGNED'. Default value is 'CHAR'. 

所以嘗試下面的代碼： -

'meta_query' => array(
      'relation' => 'AND', 
      array(
        'key' => 'date_%_start-date', 
        'value' => $when, 
        'compare' => '>=', 
        'type' => 'DATE' 
      ), 
      array (
        'key' => 'date_%_end-date', 
        'value' => $when2, 
        'compare' => '<=', 
        'type' => 'DATE' 
      ) 
    ) 

嘗試根據您的Custom Fild type改變type值(eg. Date)。

希望這會幫助你。