Wordpress orderby自定义分类法类别

Question

I've got some custom taxonomy terms that function as categories for a custom post type called 'beer'. All beer posts fall into 1 of 3 categories.

This is how I register the custom post type category:

  register_taxonomy(
            'beer_categories',
            'beer',
            array(
                'hierarchical' => true,
                'label'        => __( 'Beer categories' ),
                'rewrite'      => array( 'slug' => __( 'bieren/categorieen' ) ),
                'supports'     => array( 'thumbnail' )
            )
        );

When fetching the posts with custom post type 'beer', how would I order the results by this taxonomy category?

For example:

• Product 1 (category 1)
• Product 4 (category 1)
• Product 6 (category 1)
• Product 2 (category 2)
• Product 3 (category 3)
• Product 5 (category 4)

I have tried all sorts of arguments for the get_posts() function. But so far no luck, so please help.

$args = array(
    'post_type'      => 'beer',
    'posts_per_page' => - 1,
    'orderby'        => 'beer_categories',
    'order'          => 'ASC'
);

$posts = get_posts( $args );