improvement: tags replace keywords. Better data model, less

limitations. Each image can be associated to as many tag as needed. Tags can
contain non ASCII characters. Oriented navigation with tags by association.


git-svn-id: http://piwigo.org/svn/trunk@1119 68402e56-0260-453c-a942-63ccdbb3a9ee

1 files changed, 120 insertions, 0 deletions

diff --git a/tags.php b/tags.php
new file mode 100644
index 000000000..e61ee1f24
--- /dev/null
+++ b/tags.php
@@ -0,0 +1,120 @@
+<?php
+// +-----------------------------------------------------------------------+
+// | PhpWebGallery - a PHP based picture gallery                           |
+// | Copyright (C) 2002-2003 Pierrick LE GALL - pierrick@phpwebgallery.net |
+// | Copyright (C) 2003-2005 PhpWebGallery Team - http://phpwebgallery.net |
+// +-----------------------------------------------------------------------+
+// | branch        : BSF (Best So Far)
+// | file          : $RCSfile$
+// | last update   : $Date: 2006-03-22 02:01:47 +0100 (mer, 22 mar 2006) $
+// | last modifier : $Author: rvelices $
+// | revision      : $Revision: 1092 $
+// +-----------------------------------------------------------------------+
+// | This program is free software; you can redistribute it and/or modify  |
+// | it under the terms of the GNU General Public License as published by  |
+// | the Free Software Foundation                                          |
+// |                                                                       |
+// | This program is distributed in the hope that it will be useful, but   |
+// | WITHOUT ANY WARRANTY; without even the implied warranty of            |
+// | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU      |
+// | General Public License for more details.                              |
+// |                                                                       |
+// | You should have received a copy of the GNU General Public License     |
+// | along with this program; if not, write to the Free Software           |
+// | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, |
+// | USA.                                                                  |
+// +-----------------------------------------------------------------------+
+
+// +-----------------------------------------------------------------------+
+// |                             functions                                 |
+// +-----------------------------------------------------------------------+
+
+function counter_compare($a, $b)
+{
+  if ($a['counter'] == $b['counter'])
+  {
+    return tag_id_compare($a, $b);
+  }
+
+  return ($a['counter'] < $b['counter']) ? -1 : 1;
+}
+
+function tag_id_compare($a, $b)
+{
+  return ($a['tag_id'] < $b['tag_id']) ? -1 : 1;
+}
+
+// +-----------------------------------------------------------------------+
+// |                           initialization                              |
+// +-----------------------------------------------------------------------+
+
+define('PHPWG_ROOT_PATH','./');
+include_once(PHPWG_ROOT_PATH.'include/common.inc.php');
+
+check_status(ACCESS_GUEST);
+
+// +-----------------------------------------------------------------------+
+// |                       page header and options                         |
+// +-----------------------------------------------------------------------+
+
+$title= l10n('Tags');
+$page['body_id'] = 'theTagsPage';
+include(PHPWG_ROOT_PATH.'include/page_header.php');
+
+$template->set_filenames(array('tags'=>'tags.tpl'));
+$template->assign_vars(
+  array(
+    'U_HOME' => make_index_url(),
+    )
+  );
+
+// +-----------------------------------------------------------------------+
+// |                        tag cloud construction                         |
+// +-----------------------------------------------------------------------+
+
+// find all tags available for the current user
+$tags = get_available_tags(explode(',', $user['forbidden_categories']));
+
+// we want only the first most represented tags, so we sort them by counter
+// and take the first tags
+usort($tags, 'counter_compare');
+$tags = array_slice($tags, 0, $conf['full_tag_cloud_items_number']);
+
+// depending on its counter and the other tags counter, each tag has a level
+$tags = add_level_to_tags($tags);
+
+// we want tags diplayed in alphabetic order
+usort($tags, 'name_compare');
+
+// display sorted tags
+foreach ($tags as $tag)
+{
+  $template->assign_block_vars(
+    'tag',
+    array(
+      'URL' => make_index_url(
+        array(
+          'tags' => array(
+            array(
+              'id' => $tag['tag_id'],
+              'url_name' => $tag['url_name'],
+              ),
+            ),
+          )
+        ),
+      
+      'NAME' => $tag['name'],
+      'TITLE' => $tag['counter'],
+      'CLASS' => 'tagLevel'.$tag['level'],
+      )
+    );
+}
+
+// +-----------------------------------------------------------------------+
+// |                           html code display                           |
+// +-----------------------------------------------------------------------+
+
+$template->assign_block_vars('title',array());
+$template->parse('tags');
+include(PHPWG_ROOT_PATH.'include/page_tail.php');
+?>
\ No newline at end of file