我只想展示没有“分类”产品品牌“品牌”的帖子.
我当前的查询不适用于过滤器:
SELECT DISTINCT * FROM $wpdb->posts AS p LEFT JOIN $wpdb->postMeta AS Meta ON p.ID = Meta.post_id LEFT JOIN $wpdb->term_relationships AS rel ON rel.object_id = p.ID LEFT JOIN $wpdb->term_taxonomy AS tax ON tax.term_taxonomy_id = rel.term_taxonomy_id LEFT JOIN $wpdb->terms AS term ON tax.term_id = term.term_id WHERE 1=1 AND p.post_type = 'product' AND p.post_status = 'publish' AND p.post_title LIKE '%$trimmed%' OR (Meta.Meta_key = 'product_model' AND Meta.Meta_value LIKE '%$trimmed%') AND (tax.taxonomy = 'product-brand' AND term.slug NOT IN ('$protected'))
任何帮助是赞赏!
笔记:
看起来你没有使用$wpdb-> prepare(),所以你冒着sql注入的风险.
我也认为你在相关OR部分周围缺少括号,所以你不会最终显示草稿.
替代方案:
而不是编写一个硬编码的SQL查询,我们应该能够使用WP_Query类,并通过钩子/过滤器进行一些修改.
这是一个例子(PHP 5.4):
$args = [ '_Meta_or_like_title' => $trimmed,// Our new custom argument! 'post_type' => 'product','post_status' => 'publish','Meta_query' => [ [ 'key' => 'product_model','value' => $trimmed,// Your Meta value 'compare' => 'LIKE' ] ],'tax_query' => [ [ 'taxonomy' => 'product-brand','field' => 'slug','terms' => $protected,// Your terms array 'operator' => 'NOT IN' ] ] ];
其中自定义_Meta_or_like_title参数由稍微修改的插件支持,我为另一个question here写.
插入:
<?PHP /** * Plugin Name: Meta OR LIKE Title query in WP_Query * Description: Activated through the '_Meta_or_like_title' argument of WP_Query * Plugin URI: https://stackoverflow.com/a/31241416/2078474 * Plugin Author: Birgir Erlendsson (birgire) * Version: 0.0.1 */ add_action( 'pre_get_posts',function( $q ) { if( $title = $q->get( '_Meta_or_like_title' ) ) { add_filter( 'get_Meta_sql',function( $sql ) use ( $title ) { global $wpdb; // Only run once: static $nr = 0; if( 0 != $nr++ ) return $sql; // Modify WHERE part: $sql['where'] = sprintf( " AND ( %s OR %s ) ",$wpdb->prepare( "{$wpdb->posts}.post_title LIKE '%%%s%%'",$wpdb->esc_like( $title ) ),mb_substr( $sql['where'],5,mb_strlen( $sql['where'] ) ) ); return $sql; }); } },PHP_INT_MAX );