Custom slugs and query string parameters in WordPress URL's

custom-slug.php

<?php 
    /**
     * This is an example of a custom loop with pagination and a custom URL structure
     * get_year and get_month are our custom query string variables
     * EX: http://saos.co/clevelandplus/public/news-press/cle-in-the-national-press/2014/09/page/3/
     * where /2014/ and /09/ represent our custom query string parameters
     */
    
    global $wp_query;
    if(isset($wp_query->query_vars['getyear'])) {
        $get_year = $wp_query->query_vars['getyear'];
    }
    if(isset($wp_query->query_vars['getmonth'])) {
        $get_month = $wp_query->query_vars['getmonth'];
    }
        
    $paged = ( get_query_var('paged') ) ? get_query_var('paged') : 1;
    $args = array(
        'post_type' => 'national-press',
        'posts_per_page' => 4,
        'paged' => $paged
    );
    $query = new WP_Query($args);
    // hack to get pagination to work on custom post type custom query
    $temp_query = $wp_query;
    $wp_query = NULL;
    $wp_query = $query; ?>
            
    <?php if($query->have_posts()) : ?>
        <?php while($query->have_posts()) : $query->the_post(); ?>
            <h3><a href="<?php the_permalink(); ?>" title="<?php the_title(); ?>"><?php the_title(); ?></a></h3>
            <div class="date"><?php the_date(); ?></div>
            <?php the_excerpt(); ?>
            <hr />
        <?php endwhile; ?>
    <?php endif; ?>
            
    <?php // wp_reset_query(); ?>
    <?php // wp_reset_postdata(); ?>
        
    <div class="pagination">
        <span class="previous"><?php previous_posts_link(__('&laquo; Previous', 'carrington-jam')) ?></span>
        <span class="next"><?php next_posts_link(__('Next &raquo;', 'carrington-jam')) ?></span>
    </div>
            
    <?php
    // Undo our query hack
    $wp_query = NULL;
    $wp_query = $query;
    ?>

functions.php

<?php
/* ========================= */
/* == Configure our routes == */
/* ========================= */

// For month and/or year based archives
function saos_rewrite_tags() {
    add_rewrite_tag('%getyear%', '([^&]+)');
    add_rewrite_tag('%getmonth%', '([^&]+)');
}
add_action('init', 'saos_rewrite_tags', 10, 0);

function saos_rewrites() {
    /* -- CLE+ in the National Press (page id 41) -- */
    // for root URL (no month/year) pagination
    add_rewrite_rule('^news-press/national-press/page/([0-9]{1,})/?$','index.php?page_id=41&paged=$matches[1]','top');
    // for year and month archives, ie: http://foo.com/bar/2013/02/
    add_rewrite_rule('^news-press/national-press/([^/]*)/([^/]*)/?$','index.php?page_id=41&getyear=$matches[1]&getmonth=$matches[2]','top');
    // and for month/year with pagination, ie: http://foo.com/bar/2013/02/page/3/
    add_rewrite_rule('^news-press/national-press/([^/]*)/([^/]*)/page/([0-9]{1,})/?$','index.php?page_id=41&getyear=$matches[1]&getmonth=$matches[2]&paged=$matches[3]','top');
    // for just year archives, ie: http://foo.com/bar/2014/
    add_rewrite_rule('^news-press/national-press/([^/]*)/?$','index.php?page_id=41&getyear=$matches[1]','top');
    // and for year with pagination, ie: http://foo.com/bar/2013/page/3/
    add_rewrite_rule('^news-press/national-press/([^/]*)/page/([0-9]{1,})/?$','index.php?page_id=41&getyear=$matches[1]&paged=$matches[2]','top');
}
add_action('init', 'saos_rewrites', 10, 0);
?>