I've been following this tutorial for a simple AJAX filter search within wordpress:
I've added some checkboxes into my form for the user to select one or more categories (custom taxonomy) to search the custom post type (courses)
if I search for something that exists, the checkbox filters work fine, but if I search for something I know doesn't exist, It does nothing and I just get a 200 code in XHR in inspector.
note: I tried deleting the wp_die(); function within the Ajax callback, this makes the no result message come up if the query yields no results, however if the query will yield results, nothing happens.
Here's my code in full
functions.php
// Scripts for Ajax Filter Search
function my_ajax_filter_search_scripts() {
wp_enqueue_script( 'my_ajax_filter_search', get_stylesheet_directory_uri(). '/js/search-script.js', array(), '1.0', true );
wp_localize_script( 'my_ajax_filter_search', 'jsData',[
'ajaxUrl' => admin_url('admin-ajax.php'),
]);
}
// Shortcode: [my_ajax_filter_search]
function my_ajax_filter_search_shortcode() {
my_ajax_filter_search_scripts(); // Added here
ob_start(); ?>
<div id="my-ajax-filter-search" class="text-left">
<form action="" method="get">
<input type="text" name="search" class="quicksearch mb-4" id="search-input" value="" placeholder="Search for a course..."><br>
<div class=" btn-group-toggle" data-toggle="buttons">
<?php
// Get the custom taxonomy's terms
$terms = get_terms(
array(
'taxonomy' => 'course_category',
'hide_empty' => false,
)
);
// Check if any term exists
if ( ! empty( $terms ) && is_array( $terms ) ) {
// Run a loop and print them all
foreach ( $terms as $term ) { ?>
<?php echo '<label class="btn btn-outline-secondary">
<input type="checkbox" id="category" name="category" value="' . $term->slug . '">' . $term->name . '</label>'; ?>
<?php
}
}
?>
</div><br>
<input class="btn btn-primary" type="submit" id="submit" name="submit" value="Search">
</form>
</div>
<?php
return ob_get_clean();
}
add_shortcode ('my_ajax_filter_search', 'my_ajax_filter_search_shortcode');
// Ajax Callback
add_action('wp_ajax_my_ajax_filter_search', 'my_ajax_filter_search_callback');
add_action('wp_ajax_nopriv_my_ajax_filter_search', 'my_ajax_filter_search_callback');
function my_ajax_filter_search_callback() {
header("Content-Type: application/json");
$meta_query = array('relation' => 'AND');
if(isset($_GET['year'])) {
$year = sanitize_text_field( $_GET['year'] );
$meta_query[] = array(
'key' => 'year',
'value' => $year,
'compare' => '='
);
}
if(isset($_GET['rating'])) {
$rating = sanitize_text_field( $_GET['rating'] );
$meta_query[] = array(
'key' => 'rating',
'value' => $rating,
'compare' => '>='
);
}
if(isset($_GET['language'])) {
$language = sanitize_text_field( $_GET['language'] );
$meta_query[] = array(
'key' => 'language',
'value' => $language,
'compare' => '='
);
}
$tax_query = array();
if(isset($_GET['catNames'])) {
$catNames = $_GET['catNames'];
error_log( 'MY STUFF var $catNames: ' . print_r( $catNames, true ) );
foreach( $catNames as $catName ) {
$tax_query[] = array(
'taxonomy' => 'course_category',
'field' => 'slug',
'terms' => $catNames,
);
}
}
$args = array(
'post_type' => 'courses',
'posts_per_page' => -1,
'meta_query' => $meta_query,
'tax_query' => $tax_query
);
if(isset($_GET['search'])) {
$search = sanitize_text_field( $_GET['search'] );
$search_query = new WP_Query( array(
'post_type' => 'courses',
'posts_per_page' => -5,
'meta_query' => $meta_query,
'tax_query' => $tax_query,
's' => $search
) );
//error_log( 'MY STUFF var $search_query: ' . print_r( $search_query, true ) );
}
else {
$search_query = new WP_Query( $args );
}
error_log( 'MY STUFF: ' . print_r( $tax_query, true ) );
if ( $search_query->have_posts() ) {
$result = array();
while ( $search_query->have_posts() ) {
$search_query->the_post();
$cats = strip_tags( get_the_category_list(", ") );
$result[] = array(
"id" => get_the_ID(),
"title" => get_the_title(),
"content" => get_the_content(),
"permalink" => get_permalink(),
"year" => get_field('year'),
"rating" => get_field('rating'),
"director" => get_field('director'),
"language" => get_field('language'),
"coursecats" => $cats,
"imageUrl" => wp_get_attachment_url(get_post_thumbnail_id(get_the_ID()),'full')
);
}
wp_reset_query();
echo json_encode($result);
} else {
// no posts found
}
wp_die();
}
search-script.js
$ = jQuery;
var mafs = $("#my-ajax-filter-search");
var mafsResults = $("#my-ajax-filter-search-results");
var mafsForm = mafs.find("form");
mafsForm.submit(function(e){
e.preventDefault();
console.log("form submitted");
if(mafsForm.find("#search-input").val().length !== 0) {
var search = mafsForm.find("#search-input").val();
}
//console.log('search:', search);
var catNames = [];
$.each($("input[name='category']:checked"), function(){
catNames.push($(this).val());
});
console.log('cats :', catNames);
var data = {
action : "my_ajax_filter_search",
search : search,
catNames: catNames
}
$.ajax({
url : jsData.ajaxUrl,
data : data,
success : function(response) {
mafsResults.find("div.results").empty();
//$('.pagination').hide();
if(response) {
for(var i = 0 ; i < response.length ; i++) {
var html = "<div class='col-md-4' id='course-" + response[i].id + "'>";
html += " <a href='" + response[i].permalink + "' title='" + response[i].title + "'>";
html += " <img src='" + response[i].imageUrl + "' alt='" + response[i].title + "' />";
html += " <div class='movie-info'>";
html += " <h4>" + response[i].title + "</h4>";
html += " </div>";
html += " </a>";
html += "</div>";
mafsResults.find("div.results").append(html);
}
} else {
mafsResults.find("div.results").empty();
var html = "<div class='no-result'>No matching movies found. Try a different filter or search keyword</div>";
mafsResults.find("div.results").append(html);
}
}
});
});
Template File
<div class="filters">
<?php echo do_shortcode('[my_ajax_filter_search]'); ?>
</div>
<div id="my-ajax-filter-search-results">
<?php
$args = array(
'post_type' => 'courses',
'posts_per_page' => 16
);
$default_query = new WP_Query( $args );
if ( $default_query->have_posts() ) {
echo '<div class="results row">';
while ( $default_query->have_posts() ) {
$default_query->the_post();
?>
<div class="col-md-4 mb-4 mb-md-3">
<a class="home-image-link" href="<?php the_permalink(); ?>">
<div class="link-image">
<div style="background:url('<?php echo get_the_post_thumbnail_url(); ?>') center center no-repeat; background-size:cover; min-height:200px;">
</div>
<span class="bg-primary text-light mt-1 p-2 full-width d-inline-block">
<?php the_title(); ?> <span class="float-right"><img src="/wp-content/themes/allintraining/img/chevron-right.svg" style="height:15px;" alt="chevron right"></span>
</span>
</div>
</a>
</div>
<?php
}
wp_reset_postdata();
echo '</div>';
}
?>
</div>
Any help would be gratefully received, thanks in advance!
wp_die, which is a response. Try usingdie()instead, or even better actually return some specific failure response.