在 wp_query 中结合关键字搜索和税务查询 [英] combine keyword search and tax query in wp_query

问题描述

我一直在尝试创建自定义搜索查询，并在这方面取得了一些进展，但又遇到了另一个障碍.

I've been trying to create a custom search query, and I've made some progress on it, but have hit another roadbump.

我正在尝试将 wp_query 中的 meta_query、关键字搜索(s")和 tax_query 与OR"关系结合起来.

I'm trying to combine the meta_query, keyword search ('s') and tax_query in a wp_query with an 'OR' relationship.

多亏了这篇精彩的帖子，我已经让 meta_query 和 's' 协同工作:https://wordpress.stackexchange.com/questions/99849/search-that-will-look-in-custom-field-post-title-and-post-content

I've gotten the meta_query and 's' to work together thanks to this fantastic post: https://wordpress.stackexchange.com/questions/99849/search-that-will-look-in-custom-field-post-title-and-post-content

但是，tax_query 仍然给我带来麻烦.我尝试通过相同的方法添加它，但似乎 wordpress 在将它输出到 SQL 查询之前对 tax_query 做了一些其他魔术.

however, the tax_query is still giving me trouble. I tried adding it in via the same method, but it seems as though wordpress does some other magic with tax_query before it outputs it to the SQL query.

这是我目前得到的:

        function add_join_wpse_news($joins) 
        {  
            global $wpdb;
            return $joins . " INNER JOIN {$wpdb->postmeta} ON ({$wpdb->posts}.ID = {$wpdb->postmeta}.post_id)" ;
        }
        function alter_search_wpse_news($search,$qry)
        {
            global $wpdb;
            $add = $wpdb->prepare("({$wpdb->postmeta}.meta_key = '_et_builder_settings' AND CAST({$wpdb->postmeta}.meta_value AS CHAR) LIKE '%%%s%%')",$qry->get('s'));
            $pat = '|\(\((.+)\)\)|';
            $search = preg_replace($pat,'(($1 OR '.$add.'))',$search);
            return $search;
        }
        function alter_groupby_wpse_news($groupby)
        {
            global $wpdb;

            $mygroupby = "{$wpdb->posts}.ID";
            if( preg_match( "/$mygroupby/", $groupby )) {
                // grouping we need is already there
                return $groupby;
            }

            if( !strlen(trim($groupby))) {
                // groupby was empty, use ours
                return $mygroupby;
            }

            // wasn't empty, append ours
            return $groupby . ", " . $mygroupby;
        }
        add_filter('posts_join','add_join_wpse_news');
        add_filter('posts_search','alter_search_wpse_news',1,2);
        add_filter('posts_groupby', 'alter_groupby_wpse_news' );

        $args_condensed = array
        (
            'post_type' => 'news',
            'paged' => $paged,
            's' => $getname,
        );
        $the_query = new WP_Query($args_condensed);
        $max_pages = $the_query->max_num_pages;
        echo $GLOBALS['the_query']->request;

这是有效的.但是，它不包括对标签或类别的搜索.我尝试通过posts_join和posts_search过滤器手动添加它，但后来我意识到wordpress在输出SQL查询之前比较tax_query中的值，这在尝试添加时会导致问题.

And this works. However, it doesn't include the search for the the Tags or Categories. I attempted to add it in manually via the posts_join and posts_search filter, but then I realized that wordpress is comparining values in the tax_query BEFORE the outputted SQL query, which causes problems when trying to add it in.

任何帮助将不胜感激.

为了澄清起见，我正在尝试添加:

for clarification, I'm trying to add in:

'tax_query' => array
            (
                'relation' => 'OR',
                array //Search Tag
                (
                    'taxonomy' => 'post_tag',
                    'field' => 'slug',
                    'terms' => array($getname)
                ),
                array //Search Category
                (
                    'taxonomy' => 'category',
                    'field' => 'slug',
                    'terms' => array($getname),
                ),
                array //Search Category (Single Words)
                (
                    'taxonomy' => 'category',
                    'field' => 'slug',
                    'terms' => explode(" ",$getname),
                ),
                array //Search Tag (Single Words)
                (
                    'taxonomy' => 'post_tag',
                    'field' => 'slug',
                    'terms' => explode(" ",$getname),
                )
            ),

但使用 OR 类型的关系，而不是 wordpress 默认添加的 AND 关系.

but with an OR type relationship as opposed to the AND relationship wordpress adds by default.

推荐答案

您无法将 tax_query 用于此目的.您必须覆盖 wordpress 提供的过滤器才能实现此任务.这是我的代码.希望能帮到你:

There are no way you can use tax_query for this purpose. You must override filter that wordpress provided to achieve this mission. Here is my code. Hope it help:

    function add_join_wpse_news($joins)
    {
        global $wpdb;
        $joins = $joins . " INNER JOIN {$wpdb->postmeta} ON ({$wpdb->posts}.ID = {$wpdb->postmeta}.post_id)" ;
        $joins .= " inner join  {$wpdb->term_relationships}  as wrel on {$wpdb->posts}.ID = wrel.object_id";
        $joins .= " inner join {$wpdb->term_taxonomy} as wtax on wtax.term_taxonomy_id = wrel.term_taxonomy_id";
        $joins .= " inner join {$wpdb->terms} as wter on wter.term_id = wtax.term_id";

        return $joins;

    }
    function add_where_wpse_news($where) {
        $getname = 'what you want';
        return $where. ' AND '. "wter.slug like '%$getname%' ";
    }
    add_filter('posts_join','add_join_wpse_news');
    add_filter('posts_where','add_where_wpse_news');

我只是添加了 posts_where 并修改了 posts_join 过滤器.

I just add posts_where and modify posts_join filter.

这篇关于在 wp_query 中结合关键字搜索和税务查询的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！