Merge branch '0.9.x' of gitorious.org:statusnet/mainline into 0.9.x

[quix0rs-gnu-social.git] / actions / publictagcloud.php

diff --git a/actions/publictagcloud.php b/actions/publictagcloud.php
index 855cfed9b53437ea8a4ddd33f280e334b74cf15f..9993b2d3fde0b3473a84dbdb8e0c17151d0902cb 100644 (file)
--- a/actions/publictagcloud.php
+++ b/actions/publictagcloud.php
@@ -1,6 +1,6 @@
 <?php
 /**
- * Laconica, the distributed open-source microblogging tool
+ * StatusNet, the distributed open-source microblogging tool
  *
  * Public tag cloud for notices
  *
@@ -20,16 +20,16 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  * @category  Public
- * @package   Laconica
+ * @package   StatusNet
  * @author    Mike Cochrane <mikec@mikenz.geek.nz>
- * @author    Evan Prodromou <evan@controlyourself.ca>
+ * @author    Evan Prodromou <evan@status.net>
  * @copyright 2008 Mike Cochrane
- * @copyright 2008-2009 Control Yourself, Inc.
+ * @copyright 2008-2009 StatusNet, Inc.
  * @license   http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
- * @link      http://laconi.ca/
+ * @link      http://status.net/
  */
 
-if (!defined('LACONICA')) { exit(1); }
+if (!defined('STATUSNET') && !defined('LACONICA')) { exit(1); }
 
 define('TAGS_PER_PAGE', 100);
 
@@ -37,17 +37,17 @@ define('TAGS_PER_PAGE', 100);
  * Public tag cloud for notices
  *
  * @category Personal
- * @package  Laconica
+ * @package  StatusNet
  * @author    Mike Cochrane <mikec@mikenz.geek.nz>
- * @author    Evan Prodromou <evan@controlyourself.ca>
+ * @author    Evan Prodromou <evan@status.net>
  * @copyright 2008 Mike Cochrane
- * @copyright 2008-2009 Control Yourself, Inc.
- * @link     http://laconi.ca/
+ * @copyright 2008-2009 StatusNet, Inc.
+ * @link     http://status.net/
  */
 
 class PublictagcloudAction extends Action
 {
-    function isReadOnly()
+    function isReadOnly($args)
     {
         return true;
     }
@@ -105,12 +105,11 @@ class PublictagcloudAction extends Action
 
         #Add the aggregated columns...
         $tags->selectAdd('max(notice_id) as last_notice_id');
-        if(common_config('db','type')=='pgsql') {
-            $calc='sum(exp(-extract(epoch from (now()-created))/%s)) as weight';
-        } else {
-            $calc='sum(exp(-(now() - created)/%s)) as weight';
-        }
-        $tags->selectAdd(sprintf($calc, common_config('tag', 'dropoff')));
+        $calc = common_sql_weight('created', common_config('tag', 'dropoff'));
+        $cutoff = sprintf("notice_tag.created > '%s'",
+                          common_sql_date(time() - common_config('tag', 'cutoff')));
+        $tags->selectAdd($calc . ' as weight');
+        $tags->addWhere($cutoff);
         $tags->groupBy('tag');
         $tags->orderBy('weight DESC');
 
@@ -136,7 +135,12 @@ class PublictagcloudAction extends Action
             $this->elementStart('dd');
             $this->elementStart('ul', 'tags xoxo tag-cloud');
             foreach ($tw as $tag => $weight) {
-                $this->showTag($tag, $weight, $weight/$sum);
+                if ($sum) {
+                    $weightedSum = $weight/$sum;
+                } else {
+                    $weightedSum = 0.5;
+                }
+                $this->showTag($tag, $weight, $weightedSum);
             }
             $this->elementEnd('ul');
             $this->elementEnd('dd');