如何查询帖子自定义关系字段并将解析的搜索词包含在循环中并在 WordPress 中显示结果

Question

I'm parsing a search term from the URL in a search results page like so:

http://localhost:8888/domain/?s=Varilite%20Icon%20Mid&post_type=knowledge_hub

I need the search.php template file to query a ACF relationship custom field to see if the linked post title matches the parsed variable in the URL and display the results. Below is my code but it does not work as it only displays posts with the search term in the post titles. How do I get my query to also check the custom field? Bare in mind this tempalte file is also used for the default global search so needs to be flexible.

<?php 

    $args = array(
    'posts_per_page'    => -1,
    //'fields' => 'ids',
    'post_type'        => 'knowledge_hub',
    'meta_query'    => array(
       array(
        'key'       => 'related_products',
        'value'     => '"'.get_search_query().'"',
        'compare'   => 'LIKE', 
       )
    ),
    );
    $relatedProductArticles = get_posts($args);

    if ( have_posts($relatedProductArticles) ) : 
        while ( have_posts($relatedProductArticles) ) : the_post($relatedProductArticles);
            ?>
            
          <article class="col-12 search-item mb-5">
            <div class="row d-flex align-items-center">
              <div class="col-md-7">
                <?php the_post_thumbnail('medium', ['class' => 'w-100']); ?>
              </div>
              <div class="col-md-4">
                <div class="px-4">
                  <h2><a class="" href="<?php the_permalink() ?>"><?php the_title() ?></a></h2>
                  <?php the_excerpt(); ?>
                </div>
              </div>
            </div>
          </article>
           
    <?php
            
        endwhile;
    else : ?>

        <h2><?php _e( 'Sorry, no posts matched your criteria.', 'textdomain' );?></h2>
        
      <?php endif;
    ?>

Answer 1

TRY using $_GET .

<?php 

    $args = array(
    'posts_per_page'    => -1,
    //'fields' => 'ids',
    'post_type'        => 'knowledge_hub',
    'meta_query'    => array(
       array(
        'key'       => 'related_products',
        'value'     => $_GET['s'],
        'compare'   => 'LIKE', 
       )
    ),
    );
    $relatedProductArticles = get_posts($args);

    if ( have_posts($relatedProductArticles) ) : 
        while ( have_posts($relatedProductArticles) ) : the_post($relatedProductArticles);
            ?>
            
          <article class="col-12 search-item mb-5">
            <div class="row d-flex align-items-center">
              <div class="col-md-7">
                <?php the_post_thumbnail('medium', ['class' => 'w-100']); ?>
              </div>
              <div class="col-md-4">
                <div class="px-4">
                  <h2><a class="" href="<?php the_permalink() ?>"><?php the_title() ?></a></h2>
                  <?php the_excerpt(); ?>
                </div>
              </div>
            </div>
          </article>
           
    <?php
            
        endwhile;
    else : ?>

        <h2><?php _e( 'Sorry, no posts matched your criteria.', 'textdomain' );?></h2>
        
      <?php endif;
    ?>