Get only post terms for Woocommerce product tags?

Question

My function outputs all used Woocommerce product tags, on every product.

How can I sort out/output only tags that every single product has selected from backend?

Here is my code:

add_action( 'woocommerce_before_shop_loop_item', 'woocommerce_product_loop_tags', 5 );
add_action( 'woocommerce_product_thumbnails', 'woocommerce_product_loop_tags',  5 );

function woocommerce_product_loop_tags() {
    global $post, $product;
        if ( is_array (get_terms( 'product_tag' ))) {
           $tags = get_terms( 'product_tag' , 'orderby=id' );
           echo '<span class="badge-cloud">';
           foreach($tags as $tag) {
              echo '<span rel="tag" class="fl-badge '.$tag->slug.'"><p>'.$tag->name.'</p></span>';
           } 
           echo '</span>';
        } 
}

Answer 1

The correct way is o use wp_get_post_terms() where you can set the post ID for a given taxonomy to get the terms for this specific post ID. So your code should be:

add_action( 'woocommerce_before_shop_loop_item', 'woocommerce_product_loop_tags', 5 );
add_action( 'woocommerce_product_thumbnails', 'woocommerce_product_loop_tags',  5 );
function woocommerce_product_loop_tags() {
    global $post;

    $taxonomy = 'product_tag';
    $args = 'orderby=id';
    $product_tags = wp_get_post_terms( $post->ID, $taxonomy, $args );

    if ( count($product_tags) > 0 ){
        echo '<span class="badge-cloud">';
        foreach( $product_tags as $term )
            echo '<span rel="tag" class="fl-badge '.$term->slug.'"><p>'.$term->name.'</p></span>';
        echo '</span>';
    }
}

Code goes in function.php file of your active child theme (active theme or in any plugin file).

Tested and works.