attachment.php

<?php
/**
 * The template for displaying image attachments.
 */

get_header(); ?>
    <div id="primary" class="site-content span9">
    	<?php while ( have_posts() ) : the_post(); ?>

			<article id="post-<?php the_ID(); ?>" <?php post_class(); ?>>
				<header class="entry-header">
					<h1 class="entry-title"><?php the_title(); ?></h1>

					<div class="entry-meta">
						<?php
							$metadata = wp_get_attachment_metadata();
							printf( __( '<span class="entry-date"><time class="entry-date" datetime="%1$s" pubdate>%2$s</time></span>', 'dw_focus' ),
								esc_attr( get_the_date( 'c' ) ),
								echo dw_human_time()
							);
						?>
					</div><!-- .entry-meta -->
				</header><!-- .entry-header -->

				<div class="entry-content">

					<div class="entry-attachment">
						<div class="attachment">
							<?php
								/**
								 * Grab the IDs of all the image attachments in a gallery so we can get the URL of the next adjacent image in a gallery,
								 * or the first image (if we're looking at the last image in a gallery), or, in a gallery of one, just the link to that image file
								 */
								$attachments = array_values( get_children( array( 'post_parent' => $post->post_parent, 'post_status' => 'inherit', 'post_type' => 'attachment', 'post_mime_type' => 'image', 'order' => 'ASC', 'orderby' => 'menu_order ID' ) ) );
								foreach ( $attachments as $k => $attachment ) {
									if ( $attachment->ID == $post->ID )
										break;
								}
								$k++;
								// If there is more than 1 attachment in a gallery
								if ( count( $attachments ) > 1 ) {
									if ( isset( $attachments[ $k ] ) )
										// get the URL of the next image attachment
										$next_attachment_url = get_attachment_link( $attachments[ $k ]->ID );
									else
										// or get the URL of the first image attachment
										$next_attachment_url = get_attachment_link( $attachments[ 0 ]->ID );
								} else {
									// or, if there's only 1 image, get the URL of the image
									$next_attachment_url = wp_get_attachment_url();
								}
							?>

							<a href="<?php echo $next_attachment_url; ?>" title="<?php echo esc_attr( get_the_title() ); ?>" rel="attachment"><?php
								$attachment_size = apply_filters( 'dw_focus_attachment_size', array( 1200, 1200 ) ); // Filterable image size.
								echo wp_get_attachment_image( $post->ID, $attachment_size );
							?></a>
						</div><!-- .attachment -->

						<?php if ( ! empty( $post->post_excerpt ) ) : ?>
						<div class="entry-caption">
							<?php the_excerpt(); ?>
						</div><!-- .entry-caption -->
						<?php endif; ?>
					</div><!-- .entry-attachment -->

					<?php the_content(); ?>
					<?php wp_link_pages( array( 'before' => '<div class="page-links">' . __( 'Pages:', 'dw_focus' ), 'after' => '</div>' ) ); ?>

				</div><!-- .entry-content -->
			</article><!-- #post-<?php the_ID(); ?> -->

			<?php comments_template(); ?>

		<?php endwhile; // end of the loop. ?>
	</div>
    <?php get_sidebar(); ?>

<?php get_footer(); ?>