From 3e70bfa28713bc4562c2e615fddfd5310d22fc33 Mon Sep 17 00:00:00 2001
From: Zach Copley <zach@controlyourself.ca>
Date: Fri, 12 Dec 2008 02:56:17 -0500
Subject: Fixed Popular tab (hopefully)

darcs-hash:20081212075617-7b5ce-c56db92d928c58eaa3fed7e4f226e0fca62e2bbf.gz
---
 actions/favorited.php | 37 ++++++++++++++++++++-----------------
 config.php.sample     |  4 ++++
 lib/common.php        |  2 ++
 3 files changed, 26 insertions(+), 17 deletions(-)

diff --git a/actions/favorited.php b/actions/favorited.php
index 5f6c19c16..dc8070d06 100644
--- a/actions/favorited.php
+++ b/actions/favorited.php
@@ -56,12 +56,10 @@ class FavoritedAction extends StreamAction {
 
 	function show_notices($page) {
 
-		// XXX: Make dropoff configurable like tags?
-
-		$qry =
-			'SELECT notice_id, sum(exp(-(now() - modified)/864000)) as weight ' .
-			'FROM fave GROUP BY notice_id ' .
-			'ORDER BY weight DESC';
+		$qry = 'SELECT notice.*, sum(exp(-(now() - fave.modified) / %s)) as weight ' .
+				'FROM notice JOIN fave ON notice.id = fave.notice_id ' .
+				'GROUP BY fave.notice_id ' .
+				'ORDER BY weight DESC';
 
 		$offset = ($page - 1) * NOTICES_PER_PAGE;
 		$limit = NOTICES_PER_PAGE + 1;
@@ -72,25 +70,30 @@ class FavoritedAction extends StreamAction {
 			$qry .= ' LIMIT ' . $offset . ', ' . $limit;
 		}
 
-		// XXX: Figure out how to cache these queries.
+		# Figure out how to cache this query
 
-		$fave = new Fave;
-		$fave->query($qry);
+		$notice = new Notice;
+		$notice->query(sprintf($qry, common_config('popular', 'dropoff')));
 
-		$notice_list = array();
+		common_element_start('ul', array('id' => 'notices'));
 
-		while ($fave->fetch()) {
-		  array_push($notice_list, $fave->notice_id);
-		}
+		$cnt = 0;
 
-		$notice = new Notice();
+		while ($notice->fetch() && $cnt <= NOTICES_PER_PAGE) {
+			$cnt++;
 
-		$notice->query(sprintf('SELECT * FROM notice WHERE id in (%s)',
-			implode(',', $notice_list)));
+			if ($cnt > NOTICES_PER_PAGE) {
+				break;
+			}
 
-        $cnt = $this->show_notice_list($notice);
+            $item = new NoticeListItem($notice);
+            $item->show();
+		}
+
+		common_element_end('ul');
 
 		common_pagination($page > 1, $cnt > NOTICES_PER_PAGE,
 						  $page, 'favorited');
 	}
+
 }
diff --git a/config.php.sample b/config.php.sample
index 5f7a44c63..db1a21663 100644
--- a/config.php.sample
+++ b/config.php.sample
@@ -96,6 +96,10 @@ $config['sphinx']['port'] = 3312;
 #raise this if traffic is slow, lower it if it's fast
 #$config['tag']['dropoff'] = 86400.0 * 10;
 
+#exponential decay factor for popular (most favorited notices)
+#default 10 days -- similar to tag dropoff
+#$config['popular']['dropoff'] = 86400.0 * 10;
+
 #optionally show non-local messages in public timeline
 #$config['public']['localonly'] = false;
 
diff --git a/lib/common.php b/lib/common.php
index f727a1cc1..b8ecbe151 100644
--- a/lib/common.php
+++ b/lib/common.php
@@ -116,6 +116,8 @@ $config =
               'port' => 3312),
 		'tag' =>
 		array('dropoff' => 864000.0),
+		'popular' =>
+		array('dropoff' => 864000.0),
 		'daemon' =>
 		array('piddir' => '/var/run',
 			  'user' => false,
-- 
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