I'm having some issues trying to add a front-end sort custom taxonomy archive feature to a site.
I've added a custom taxonomy (countries) along side categories & tags to Posts. On the archive for each of these countries (taxonomy-country-england.php) I'd like to allow visitors to sort the posts by date published as default or by a custom meta_value (usually the name of a city/town) in ASC or DESC.
Any ideas? Please, would be greatly received. Being bugging me for ages.