Adjust query on single

Question

I am building an event manager. One of the template files I have is events-single.php which displays single events. At the bottom of this I have next and previous events using next_post_link and previous_post_link. The problem is that those functions proceed through the events in order of published date rather than event date. (I have a meta key _fulldate setup on the CPT for this). When I was building events-archive.php file I overcame a similar problem by doing something like this

$query = new WP_Query( array ( 
'post_type' => 'events', 
'orderby' => 'meta_value', 
'meta_key' => '_fulldate', 
'order' => 'ASC')
);

However when I try that on events-single.php it makes all the events display on the page.

Ultimatly I want events-single.php to behave like a single page but then allow me control over the query as above. Is this possible or will I have to do a second loop for the Previous and Next links

Answer 1

Take a look here: specify meta_key / meta_value condition for prev_post_link and next_post_link

Which ultimately leads to this plugin, which accesses the get_adjacent_post function mentioned above: Ambrosite Next/Previous Post Link Plus

And looks like it would fit your needs by allowing you to specificy a meta_value for the next/prev post hook.