single.php

<?php
/**
 * The Template for displaying all single posts.
 *
 * Please note that this is the WordPress construct of posts
 * and that other 'posts' on your WordPress site will use a
 * different template.
 *
 * @package Radix
 * @since Radix 1.0
 *
 */

get_header(); 
$col= 'col-md-12';
if ( is_active_sidebar( 'sidebar' ) ) {
    $col = 'col-md-9';
} ?>   
<div id="primary" class="content-area <?php echo $col; ?>">
	<?php while ( have_posts() ) : the_post(); ?>
		<?php get_template_part( 'loop/content', 'single', get_post_format() ); ?>
		<?php if (ro_get_option('post_navigation')) { ?>
		<?php Radix_content_nav( 'nav-below' ); ?>
		<?php } ?>
		<?php
			// If comments are open or we have at least one comment, load up the comment template
		if ( comments_open() || '0' != get_comments_number() )
			comments_template();
		?>
	<?php endwhile; // end of the loop. ?>
</div> <!-- #primary -->
<?php get_sidebar(); ?>
<?php get_footer(); ?>