在Woocommerce中隐藏商店页面上类别列表中的产品类别

Question

I wanted to hide a certain product category in the category list on the Woocommerce shop page. I found and used the following snippet to do so:

add_filter( 'get_terms', 'exclude_category', 10, 3 );
function exclude_category( $terms, $taxonomies, $args ) {
  $new_terms = array();
  // if a product category and on a page
  if ( in_array( 'product_cat', $taxonomies ) && ! is_admin() && is_shop() ) 
  {
    foreach ( $terms as $key => $term ) {
      if ( ! in_array( $term->slug, array( 'books' ) ) ) {
        $new_terms[] = $term;
      }
    }
    $terms = $new_terms;
  }
  return $terms;
}

I have a debug option in my wp-config set to true and so while the snippet is working and the 'books' category is hidden from the list, I am getting the following error:

Notice:: Trying to get property of non-object in

And it is pointing to this line:

if ( in_array( 'product_cat', $taxonomies ) && ! is_admin() && is_shop() )

Is this line written correctly? or am I missing something?

Answer 1

Updated: You should better use unset() to remove the product category term from the array, this way:

add_filter( 'get_terms', 'exclude_category', 10, 3 );
function exclude_category( $terms, $taxonomies, $args ) {
    $new_terms = array();
    if ( is_shop() ){
        foreach ( $terms as $key => $term ) {
            if( is_object ( $term ) ) {
                if ( 'books' == $term->slug && $term->taxonomy = 'product_cat' ) {
                    unset($terms[$key]);
                }
            }
        }
    }
    return $terms;
}

This code goes on function.php file of your active child theme (or theme).

Tested and works (does't throws an error).