Reply To: WP_query to order by custom field

• nightillusions

• October 31, 2017 at 12:10 am

If your figures connected to taxonomies, then you can filter by tax_query
Your query has to look like this:

// filter on figures from serie's taxonomy
$args = array(
	'post_type'			=> 'figure',
	'posts_per_page'	=> -1,
	'meta_key'			=> 'release_date_fr',
	'orderby'			=> 'meta_value',
	'order'				=> 'DESC',
	'tax_query' => array(
        array(
            'taxonomy' => 'serie',   // taxonomy name
            'field' => 'slug',           // term_id, slug or name
            'terms' => array( 'the-legend-of-zelda', 'hyrule-warriors' ), // single value or array of term id(s), term slug(s) or term name(s)
        )
    )
);

// query the figures
$the_query = new WP_Query($args);

BTW: If there is a error 500, then there is a new entry in you error logs, with more details about the error. Always start at this point to look for a solution.