I have the following code intended to fetch, filter and display custom post on input(onkeyup). However, it sin't working at the moment; I also get a 500 (Internal Server Error) when I open the console. What am I missing?

The PHP:` add_action('wp_ajax_data_fetch' , 'data_fetch'); add_action('wp_ajax_nopriv_data_fetch','data_fetch'); function data_fetch(){

   $the_query = new WP_Query( array( 'posts_per_page' => 6, 's' => esc_attr( 
  $_POST['keyword'] ), 'post_type' => 'custom_post' ) );
  if( $the_query->have_posts() ) :
    while( $the_query->have_posts() ): $the_query->the_post(); ?>
  <div class="cell s_result_box">
            <div class="title"><a href="<?php echo esc_url( post_permalink() ); ?>"><?php 

            <div class="content"><?php the_content(); ?></div>
            <div class="meta"><span class=""><?php the_post_meta() ?></span> - <span 
            class=""><?php get_the_date(); ?></span></div>
            <div class="dividerline"></div>
       <?php endwhile; ?>

   add_action( 'wp_footer', 'ajax_fetch' );
   function ajax_fetch() {
   <script type="text/javascript">
function fetchResults() {
    var keyword = jQuery('#searchInput').val();
    if(keyword == "" || keyword == 0){
        jQuery('#datafetch').html( " " );
    } else {
            url: '<?php echo admin_url('admin-ajax.php'); ?>',
            type: 'post',
            data: { action: 'data_fetch', keyword: keyword  },
            success: function(data) {
                jQuery('#datafetch').html( data );


      //The search form and results div
      <form class="t_margin_0" autocomplete="off">
              <input type="search" name="s" class="t_margin_0 dir_search" 
        placeholder="Search by name, location, department…" id="searchInput" 

     <div class="grid-x" id="datafetch"></div>`

1 Answer 1


The 500 error means your ajax url is not working. Try using an external js file and wp_localize_script

More info in the codex.

  • Apart from the 500 server error, the whole code doesn't work... still can't figure out why.
    – jeno
    May 4, 2020 at 21:23
  • It won't work unless you solve the ajax 500 error. Then debug the rest of your code if necessary.
    – shanebp
    May 4, 2020 at 21:30

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