Woocommerce how to display relevant tags under category title

Question

I want to display meta tags under each category title. I can see there is this code to display product tag lists for each product, but what I really want is product tags for each category and then display it under the category title in the page.

<?php

global $product;

?>

<div class="product-tags">

<?php 

echo wc_get_product_tag_list( $product->get_id(), ', ' ); 

?>

</div>

Example screenshot:

Answer 1

Well, you already know/have the category name (i.e 'Coffee Equipment'), so you could use that to get the relevant tags, but in order to do so, we'll create a function in the functions.php of your active theme, like so:

The following code goes to your functions.php file of your active theme:

function your_theme_get_tags_based_on_cat($cat_name)
{

  $cat_id = get_cat_ID($cat_name);

  $tag_query = new WP_Query(array(
    'post_type'      => 'product',
    'posts_per_page' => -1,
    'post_status'    => 'publish',
    'tax_query'      => array(
      array(
          'taxonomy'      => 'product_cat',
          'field'         => 'term_id', 
          'terms'         => $cat_id,
          'operator'      => 'IN' 
        )
      )
  ));

  $all_tags = array();

  while ($tag_query->have_posts()) {
    $tag_query->the_post();
    $producttags = get_the_tags();
    if ($producttags) {
      foreach ((array)$producttags as $tag_obj) {
        $all_tags[] = $tag_obj->term_id . '-' . $tag_obj->name;
      }
    }
  };

  $tags_array = array_unique($all_tags);

  $new_array = array_map(function ($val) {
    return explode("-", $val);
  }, $tags_array);

  return new_array;
}

The function above will return an associative array containing tag id and tag name of the corresponding tags of your PRODUCT category.

Side Note:
if you need to use it for the blog posts of your wordpress site, then you could change/modify the query by swapping 'post_type' => 'product' argument with 'post_type' => 'posts'. So your query for blog posts would be something like this:

$blog_tag_query = new WP_Query(array('post_type'=>'post','post_status' =>'publish','cat'=>$cat_id,'posts_per_page'=>-1));

If you decide to use it for your blog posts, also remember to change the get_term_link((int)$tag[0], 'product_tag') with get_term_link((int)$tag[0], 'post_tag') in your template.

Now you have a magical function :) that you can use anywhere that you need a list of tags for a specific category!

So let's use our function in your page template to populate the corresponding tags for the current category, like so:

$cat_name = 'Coffee Equipment';

$tags_array = your_theme_get_tags_based_on_cat($cat_name);

foreach ($tags_array as $tag) 
{
echo '<a class="item" href="' . get_term_link((int)$tag[0], 'product_tag') . '">' . $tag[1] . '</a>';
};

Just tested and it works seamlessly fine! Feel free to customize it as needed on your html template/markup.