使用URL查询变量更改WP_QUERY参数

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我已经使用WP\\u Query在此处显示了这些帖子（旅行）http://boost19.delavec.si/wordpressP/produkti/

所以我有一个WP\\U查询，它在我的自定义帖子中循环

  <?php $paged = (get_query_var(\'paged\')) ? get_query_var(\'paged\') : 1; ?>
            <?php $loop = new WP_Query( array(
                \'post_type\' => \'product\',
                \'meta_key\' => \'product_price\',
                \'orderby\' => \'meta_value_num\',
                \'order\' => \'ASC\',
                \'posts_per_page\' => 4,
                \'paged\' => $paged) ); ?>

            <?php while( $loop->have_posts() ) : $loop->the_post(); ?>

            <div class="av_one_third" style="display: inline-block; width: 20%; margin-bottom: 3%; text-align: center; margin-left: 3%;">
                <div class="card rounded-0 bg-light mb-3" style="width: 225px; height: 325px; text-align: center">
                    <h5 class="card-title"><?php the_title(); ?></h5>
                    <a href="<?php the_permalink(); ?>">
                        <?php the_post_thumbnail(); ?>
                    </a>
                    <p>We are going to <?php the_field(\'product_place\'); ?></p>
                    <p>Product price: <?php the_field(\'product_price\'); ?>€</p>
                    <?php if(get_field(\'product_discount_price\')): ?>
                        <h4>Discount: <?php the_field(\'product_discount_price\'); ?>€</h4>
                    <?php endif; ?>
                    <p>We are going on <?php the_field(\'product_date\'); ?></p>
                </div>
            </div>
        <?php endwhile; ?>

我希望添加类似“排序”的操作-我想知道是否可以将“order”更改为“DESC”作为初学者？

我试过读不同的东西，比如https://premium.wpmudev.org/blog/building-customized-urls-wordpress/https://codex.wordpress.org/WordPress_Query_Vars

并尝试了这一点，但没有结果；

http://boost19.delavec.si/wordpressP/produkti/?order=DESC或http://boost19.delavec.si/wordpressP/?post_type=product&orderby=meta_value_num&meta_key=product_price&order=DESC

它不会返回应该返回的真值。

有人面对过这样的事情吗？或者，如果有人有任何其他想法，如何通过价格解决这类问题？

顺便说一句，我使用的是高级自定义字段-价格字段的名称是

产品价格

$loop = new WP_Query( array( \'post_type\' => \'product\', \'meta_key\' => \'product_price\', \'orderby\' => \'meta_value_num\', \'order\' => \'ASC\', \'posts_per_page\' => 4, \'paged\' => $paged) );

$posts_order = \'DESC\'; if ( ! empty( $_GET[\'posts_order\'] ) ) { $posts_order_raw = sanitize_key( $_GET[\'posts_order\'] ); if ( \'ASC\' === $posts_order_raw ) { $posts_order = \'ASC\'; } } $loop = new WP_Query( array( \'post_type\' => \'product\', \'meta_key\' => \'product_price\', \'orderby\' => \'meta_value_num\', \'order\' => $posts_order, \'posts_per_page\' => 4, \'paged\' => $paged) );

$loop = new WP_Query( array( \'post_type\' => \'product\', \'meta_key\' => \'product_price\', \'orderby\' => \'meta_value_num\', // \'order\' => $posts_order, # Remove this line # \'posts_per_page\' => 4, \'paged\' => $paged) );

<?php function wp_se_331547( $wp_query ) { if ( !is_admin() && is_main_query() ) { if( \'product\' === get_post_type() ) { $posts_order = \'DESC\'; if ( ! empty( $_GET[\'posts_order\'] ) ) { $posts_order_raw = sanitize_key( $_GET[\'posts_order\'] ); if ( \'ASC\' === $posts_order_raw ) { $posts_order = \'ASC\'; } } $wp_query->set( \'order\', $posts_order ); } } } add_action(\'pre_get_posts\', \'wp_se_331547\');

小码农CODE

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