How to Filter Tax Query in My WordPress?

Filtering by taxonomies in WordPress can be a powerful way to customize the posts or custom post types displayed on your site.

Here’s a guide to do it using the tax_query parameter in WP_Query.

  1. Identify Where to Apply the Filter: You first need to determine where you want to apply this filter. This could be within your theme’s template files like index.php, archive.php, category.php, etc.

  2. Use WP_Query to Filter Posts: WP_Query is a WordPress class that allows you to create custom queries to get posts based on specific criteria. You’ll use the tax_query parameter to filter by taxonomy. Below is an example that filters posts based on a custom taxonomy (e.g., ‘genre’) and its term (e.g., ‘horror’):

$args = array(
    'post_type' => 'post',
    'tax_query' => array(
            'taxonomy' => 'genre',
            'field'    => 'slug',
            'terms'    => 'horror',
$query = new WP_Query( $args );
  1. Loop Through the Query Results: After setting up the WP_Query, you can loop through the results to display the posts that meet the criteria:
if ( $query->have_posts() ) {
    while ( $query->have_posts() ) {
        // Display the post (you can use the_content(), the_title(), etc. here)
} else {
    // No posts found
  1. Reset Postdata: After running a custom query, it’s essential to reset postdata. This restores the global $post variable to the current post in the main query:

Remember, always back up your site before making changes to your theme files. If you’re not comfortable editing PHP, consider hiring a developer or using a WordPress plugin that provides similar functionality.

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