我有一个带有一个标准文本输入和一个选择输入的搜索表单，用于选择分类术语。
查询使用输入运行WP\\U查询并显示结果。唯一的问题是，查询似乎没有运行taxonomy参数。我可以很好地输入关键字，它将显示正确的结果，但它不会拾取分类参数。如果我没有输入任何关键字，但从选择输入中选择了一个分类术语，则找不到任何结果。
选择输入中的值正在传递，它位于搜索结果页面的URL中，我已将其回显到结果页面上。
当我回显WP\\u查询请求时，它不会详细说明在自定义分类法“product category”中查找产品的任何尝试。
这是表格-
<form method="get" id="advanced-searchform" role="search" action="<?php echo esc_url( home_url( \'/\' ) ); ?>">
<input type="text" name="product-name" value="" placeholder="Enter product name or code">
<input type="submit" value="Search">
<select name="category">
<option value="" disabled selected>Select category</option>
<?php
$post_type = \'product\';
$taxonomies = get_object_taxonomies( (object) array( \'post_type\' => $post_type, \'order\' => \'ASC\', \'orderby\' => \'date\' ) );
foreach( $taxonomies as $taxonomy ) :
$terms = get_terms( $taxonomy );
foreach( $terms as $term ) :
?>
<option value="<?php echo $term->slug; ?>"><?php echo $term->name; ?></option>
<?php
endforeach;
endforeach;
?>
</select>
<input class="hidden-search" type="hidden" name="search" value="advanced">
</form>
这里是查询-
$_keyword = $_GET[\'product-name\'];
$_cat = $_GET[\'category\'];
$product_args = array(
\'s\' => $_keyword,
\'post_type\' => \'product\',
\'posts_per_page\' => 10,
\'taxonomy\' => \'product-category\',
\'terms\' => $_cat
);
$productSearchQuery = new WP_Query( $product_args );
echo $productSearchQuery->request;
也尝试过-
$product_args = array(
\'s\' => $_keyword,
\'post_type\' => \'product\',
\'posts_per_page\' => 10,
\'tax_query\' => array( array(
\'taxonomy\' => \'product-category\',
\'field\' => \'slug\',
\'terms\' => $_cat,
) ),
);
查询请求示例-
SELECT SQL_CALC_FOUND_ROWS wp_posts.ID
FROM wp_posts
WHERE 1=1
AND ( 0 = 1 )
AND wp_posts.post_type = \'product\'
AND (wp_posts.post_status = \'publish\' OR wp_posts.post_author = 1 AND wp_posts.post_status = \'private\')
GROUP BY wp_posts.ID
ORDER BY wp_posts.post_date DESC
LIMIT 0, 10
最合适的回答,由SO网友:Howdy_McGee 整理而成
更好的选择可能是使用pre_get_posts 钩子改为在请求查询之前修改查询，而不是创建自己的查询。下面是它的样子：
/**
* Modify Theme Queries
* - https://developer.wordpress.org/reference/hooks/pre_get_posts/
* - https://codex.wordpress.org/Plugin_API/Action_Reference/pre_get_posts
*
* @param $query
*
* @return void
*/
function theme_pgp( $query ) {
if( is_admin() ) {
return; // If we\'re in the admin panel - drop out
}
if( $query->is_main_query() && $query->is_search() ) { // Apply to all search queries
// IF our category is set and not empty - include it in the query
if( isset( $_GET[\'category\'] ) && ! empty( $_GET[\'category\'] ) ) {
$query->set( \'tax_query\', array( array(
\'taxonomy\' => \'product-category\',
\'field\' => \'slug\',
\'terms\' => array( sanitize_text_field( $_GET[\'category\'] ) ),
) ) );
}
}
}
add_action( \'pre_get_posts\', \'theme_pgp\' );
此时，您可以在搜索页面上使用标准循环，而不是自定义WP\\U查询：
if( have_posts() ) {
while( have_posts() ) {
the_post();
the_title();
}
}
