Galleria ACF Repeater

gistfile1.txt

<?php

/*
* Snippet to add a media gallery to post types/templates of your choosing.
* PHP include me.
* If using Proper Bear, drop me in _/inc/php and I'll work dandy
*/

// Define an array of post types, templates etc to attach this repeater to.

$locations = array(
  // Possible values for 'param' include post_type, user_type, post, post_category, post_format, post_status, post_taxonomy
  // page, page_type, page_parent, page_template, user_form, user_role, attachment, taxonomy, comment, widget, options_page

  array (
    array (
      'param' => 'post_type',
      'operator' => '==',
      'value' => 'post',
      'order_no' => 0,
      'group_no' => 0,
    ),
  )
);

if(function_exists("register_field_group"))
{
  register_field_group(array (
    'id' => 'acf_media-gallery',
    'title' => 'Media Gallery',
    'fields' => array (
      array (
        'key' => 'field_52a99ee10fb53',
        'label' => 'Gallery',
        'name' => 'gallery',
        'type' => 'repeater',
        'instructions' => 'Add images and videos to a gallery. Use the shortcode [galleria] to place the gallery.',
        'sub_fields' => array (
          array (
            'key' => 'field_52a99f200fb54',
            'label' => 'Is video',
            'name' => 'is_video',
            'type' => 'true_false',
            'instructions' => 'Is this a video?',
            'column_width' => 10,
            'message' => '',
            'default_value' => 0,
          ),
          array (
            'key' => 'field_52a99f5f0fb55',
            'label' => 'Video',
            'name' => 'video',
            'type' => 'oembed',
            'instructions' => 'YouTube or Vimeo url',
            'conditional_logic' => array (
              'status' => 1,
              'rules' => array (
                array (
                  'field' => 'field_52a99f200fb54',
                  'operator' => '==',
                  'value' => '1',
                ),
              ),
              'allorany' => 'all',
            ),
            'column_width' => 20,
            'default_value' => '',
            'placeholder' => '',
            'prepend' => 'http://',
            'append' => '',
            'formatting' => 'none',
            'maxlength' => '',
          ),
          array (
            'key' => 'field_52a99f9e0fb56',
            'label' => 'Image',
            'name' => 'image',
            'type' => 'image',
            'conditional_logic' => array (
              'status' => 1,
              'rules' => array (
                array (
                  'field' => 'field_52a99f200fb54',
                  'operator' => '!=',
                  'value' => '1',
                ),
              ),
              'allorany' => 'all',
            ),
            'column_width' => 15,
            'save_format' => 'object',
            'preview_size' => 'thumbnail',
            'library' => 'all',
          ),
          array (
            'key' => 'field_52a9a0340fb57',
            'label' => 'Caption',
            'name' => 'caption',
            'type' => 'textarea',
            'instructions' => 'Short description of the image or video',
            'column_width' => '',
            'default_value' => '',
            'placeholder' => '',
            'maxlength' => '',
            'formatting' => 'none',
          ),
        ),
        'row_min' => '',
        'row_limit' => '',
        'layout' => 'table',
        'button_label' => 'Add an image or video',
      ),
    ),
    'location' => $locations,
    'options' => array (
      'position' => 'normal',
      'layout' => 'default',
      'hide_on_screen' => array (
      ),
    ),
    'menu_order' => 0,
  ));
}


function galleria($container, $theme_url, $debug = 'false') {  

  // Prepare an array to populate before encoding as a JSON object for Galleria

  $ready = array();
   
  while(has_sub_field('gallery')){

    $image = get_sub_field('image');

    if(get_sub_field('video')): 
        // Get the iframe -- contains iframe markup
        $iframe = get_sub_field('video');

        // use preg_match to find iframe src
        preg_match('/src="(.+?)"/', $iframe, $matches);
        $src = $matches[1];

        $video_service = str_ireplace('www.', '', parse_url($src, PHP_URL_HOST));;

        switch (substr($video_service, 0, 5)) {
          case 'youtu':
            // Trim away some of ACF's oembed code
            $src = rtrim($src, '?feature=oembedvideo');

            // Get the video ID from the URL
            $video_id = youtube_id_from_url($src);

            // Get the thumbnail URL
            $thumb = 'http://img.youtube.com/vi/' . $video_id . '/0.jpg';
            break;

          case 'vimeo':
            // Way easier....
            $thumb = $src . 'thumb';

            break;
          default:
            # code...
            break;
        }

        $ready[] = array(
          'iframe'      => $src,
          'description' => get_sub_field('caption'),
          'thumb'       => $thumb
        );

      elseif($image): 

        $ready[] = array(
          'image'       => $image['sizes']['large'],
          'thumb'       => $image['sizes']['thumbnail'],
          'description' => get_sub_field('caption')
        );
      else:

    endif;

  }


  echo  '<div id="' . $container .'"></div>' . 
          '<script> 
            var data = ' . json_encode($ready) . '; 

            Galleria.loadTheme("' . $theme_url . '");
            Galleria.configure({
                debug: ' . $debug . '
            });
            Galleria.run("#' . $container .'", {dataSource : data, height: 0.5625});
          </script>';
}

/**
 * get youtube video ID from URL
 *
 * @param string $url
 * @return string Youtube video id or FALSE if none found. 
 */
function youtube_id_from_url($url) {
    $pattern = 
        '%^# Match any youtube URL
        (?:https?://)?  # Optional scheme. Either http or https
        (?:www\.)?      # Optional www subdomain
        (?:             # Group host alternatives
          youtu\.be/    # Either youtu.be,
        | youtube\.com  # or youtube.com
          (?:           # Group path alternatives
            /embed/     # Either /embed/
          | /v/         # or /v/
          | /watch\?v=  # or /watch\?v=
          )             # End path alternatives.
        )               # End host alternatives.
        ([\w-]{10,12})  # Allow 10-12 for 11 char youtube id.
        $%x'
        ;
    $result = preg_match($pattern, $url, $matches);
    if (false !== $result) {
        return $matches[1];
    }
    return false;
}