format-gallery.php

<?php
/**
 * Gallery Post Format Template
 *
 * The template for displaying the post content for gallery posts
 *
 * @package Flint
 * @since 1.0.1
 */

?>

  <div class="row">
    <?php echo flint_post_margin( true ); ?>
    <article id="post-<?php the_ID(); ?>" <?php flint_post_class(); ?>>
      <header class="entry-header">
        <h2 class="entry-title"><?php
        if ( is_single() ) {
          echo the_title();
        } else {
          echo '<a href="' . get_permalink() . '" rel="bookmark">' . get_the_title() . '</a>';
        } ?></h2>

        <?php edit_post_link( __( 'Edit Gallery', 'flint' ), '', '', 0, 'btn btn-default btn-sm btn-edit hidden-xs' ); ?>
        <?php if ( ! is_single() ) { ?><a class="btn btn-info btn-block visible-xs-block" href="<?php echo get_permalink(); ?>">View gallery</a><?php } ?>

        <div class="entry-meta">
          <?php do_action( 'flint_entry_meta_above_post' ); ?>
        </div><!-- .entry-meta -->
      </header><!-- .entry-header -->

      <?php if ( is_search() ) : ?>
        <div class="entry-summary">
          <?php the_excerpt(); ?>
        </div><!-- .entry-summary -->
      <?php else : ?>
        <div class="entry-content"><?php
          if ( is_single() ) {
            flint_the_content();
          } else {
            $pattern = get_shortcode_regex();
            preg_match( "/$pattern/s", get_the_content(), $match );
            $atts   = isset( $match[3] ) ? shortcode_parse_atts( $match[3] ) : array();
            $images = isset( $atts['ids'] ) ? explode( ',', $atts['ids'] ) : false;

            if ( ! $images ) {
              $images = get_posts( array(
                'post_parent'      => get_the_ID(),
                'fields'           => 'ids',
                'post_type'        => 'attachment',
                'post_mime_type'   => 'image',
                'orderby'          => 'menu_order',
                'order'            => 'ASC',
                'numberposts'      => 12,
                'suppress_filters' => false,
              ) );
            }

            if ( $images ) {
              $total_images = count( $images );
              $image        = array_shift( $images ); ?>

              <p><a class="gallery-thumb hidden-xs" href="<?php the_permalink(); ?>"><?php echo wp_get_attachment_image( $image, 'large' ); ?></a></p>
              <p class="gallery-info"><?php
                printf(
                  _n( 'This gallery contains <a %1$s>%2$s photo</a>.', 'This gallery contains <a %1$s>%2$s photos</a>.', $total_images, 'flint' ),
                  'href="' . get_permalink() . '" title="' . esc_attr( sprintf( __( 'Permalink to %s', 'flint' ), the_title_attribute( 'echo=0' ) ) ) . '" rel="bookmark"',
                  number_format_i18n( $total_images )
                );
              ?></p><?php
              the_excerpt();
            }
          }

          flint_link_pages( array(
            'before' => '<ul class="pagination">',
            'after'  => '</ul>',
          ) );
        ?></div><!-- .entry-content -->
      <?php endif; ?>

      <footer class="entry-meta clearfix">
        <?php do_action( 'flint_entry_meta_below_post' ); ?>
      </footer><!-- .entry-meta -->
    </article><!-- #page-<?php the_ID(); ?> -->
    <?php echo flint_post_margin(); ?>
  </div><!-- .row -->