問題描述

我有一個自定義的帖子類型”Listing”,我想得到所有具有自定義字段 gateway_value != 'Yes'的列表,並通過另一個自定義字段 location_level1_value 排序結果。我可以讓查詢單獨工作,但是我不能組合它們:

查詢 1(按位置排序):

                $wp_query = new WP_Query( array (
                    'post_type' => 'listing',
                    'post_status' => 'publish',
                    'posts_per_page' => '9',
                    'meta_key' => 'location_level1_value',
                    'orderby' => 'location_level1_value',
                    'order' => 'ASC',
                    'paged' => $paged
                    )
                 );

查詢 2(自定義字段值!=是):

                $wp_query = new WP_Query( array (
                    'post_type' => 'listing',
                    'posts_per_page' => '9',
                    'post_status' => 'publish',
                    'meta_key' => 'gateway_value',
                    'meta_value' => 'Yes',
                    'meta_compare' => '!=',
                    'paged' => $paged
                    )
                );

組合查詢:

我查看了 codex 以獲取幫助,但以下查詢不起作用:

                $wp_query = new WP_Query( array (
                    'post_type' => 'listing',
                    'posts_per_page' => '9',
                    'post_status' => 'publish',
                    'meta_query' => array(
                        array(
                            'key' => 'gateway_value',
                            'value' => 'Yes',
                            'compare' => '!='
                        ),
                        array(
                            'key' => 'location_level1_value'
                        )
                    ),
                    'orderby' => "location_level1_value",
                    'order' => 'ASC',
                    'paged' => $paged
                    )
                );

我在組合查詢中做錯了什麼?

[更新]:現在 3.1 已經發布,上面的組合查詢仍然不起作用。我得到的結果,只是沒有排序正確。

[更新]:var_dump($wp_query->request)給出以下內容:string(527) " SELECT SQL_CALC_FOUND_ROWS wp_7v1oev_posts.* FROM wp_7v1oev_posts
INNER JOIN wp_7v1oev_postmeta ON (wp_7v1oev_posts.ID = wp_7v1oev_postmeta.post_id)
INNER JOIN wp_7v1oev_postmeta AS mt1 ON (wp_7v1oev_posts.ID = mt1.post_id) WHERE 1=1 AND wp_7v1oev_posts.post_type = 'listing' AND (wp_7v1oev_posts.post_status = 'publish') AND wp_7v1oev_postmeta.meta_key = 'gateway_value' AND CAST(wp_7v1oev_postmeta.meta_value AS CHAR) != 'Yes' AND mt1.meta_key = 'location_level1_value' ORDER BY wp_7v1oev_posts.post_date DESC LIMIT 0, 9"

最佳解決方案

您可以使用查詢通過使用具有過濾選項的’meta_query’ 按預期過濾內容,對於訂單部分,只需添加/修改以下參數:

  • ‘orderby’ => ‘meta_value’

  • ‘meta_key’ => ‘location_level1_value’

  • ‘order’ => ‘ASC’

    $wp_query = new WP_Query( array (
        'post_type'      => 'listing',
        'posts_per_page' => '9',
        'post_status'    => 'publish',
        'meta_query'     => array(
            array(
                'key'       => 'gateway_value',
                'value'     => 'Yes',
                'compare'   => '!='
            )
        ),
        'orderby'  => 'meta_value',            // this means we will be using a selected 
                                               // meta field to order
    
        'meta_key' => 'location_level1_value', // this states which meta field 
                                               // will be used in the ordering, 
                                               // regardless of the filters
        'order'    => 'ASC',
        'paged'    => $paged
        )
    );
    

參考文獻

注:本文內容整合自 Google/Baidu/Bing 輔助翻譯的英文資料結果。如果您對結果不滿意,可以加入我們改善翻譯效果:薇曉朵技術論壇。