Displaying Portfolio Filter by Category Order (alphabetically)

Question

I have created a custom post type to display churches in Europe. I used this tutorial to make it filterable: http://wp.tutsplus.com/tutorials/creating-a-filterable-portfolio-with-wordpress-and-jquery/

Everything on my site works as normal: http://globalicn.com/preview/regions/europe/

My question is, I would like the posts to be organized by the Country not the post of the title.

<?php
$loop = new WP_Query(array('post_type' => 'europe', 'posts_per_page' => -1, 'orderby' =>         'title', 'order' => 'asc'));
$count =0;
?>

What can I do?

Answer 1

I am assuming that 'country' is a custom meta field. In that case, you need this (very much like one of the examples in the Codex):

$loop = new WP_Query( 
    array ( 
        'post_type' => 'europe', 
        'posts_per_page' => -1,
        'orderby' => 'meta_value', 
        'meta_key' => 'country' 
        'order' => 'asc'
    ) 
);