From 4322abb39fe8672ba0179e9a460a73ae65fdfffc Mon Sep 17 00:00:00 2001
From: rvelices <rv-github@modusoptimus.com>
Date: Tue, 22 Jul 2008 10:32:25 +0000
Subject: - add #user_cache.cache_update_time - useful for plugins or the
 filter when it is not possible/desirable to cache/calculate data specific to
 the user when pwg core does it; note that this opens the possibility to
 implement a data cache (file/shared mem/ etc...) for every user (for very
 large databases)

git-svn-id: http://piwigo.org/svn/trunk@2448 68402e56-0260-453c-a942-63ccdbb3a9ee
---
 include/filter.inc.php | 26 ++++++++++++++------------
 1 file changed, 14 insertions(+), 12 deletions(-)

(limited to 'include/filter.inc.php')

diff --git a/include/filter.inc.php b/include/filter.inc.php
index b77ddca98..d63515265 100644
--- a/include/filter.inc.php
+++ b/include/filter.inc.php
@@ -22,7 +22,6 @@
 // +-----------------------------------------------------------------------+
 
 // $filter['enabled']: Filter is enabled
-// $filter['check_key']: Check key to valitade computed filter data
 // $filter['recent_period']: Recent period used to computed filter data
 // $filter['categories']: Computed data of filtered categories
 // $filter['visible_categories']:
@@ -34,7 +33,7 @@ if (!get_filter_page_value('cancel'))
   if (isset($_GET['filter']))
   {
     $filter['matches'] = array();
-    $filter['enabled'] = 
+    $filter['enabled'] =
       preg_match('/^start-recent-(\d+)$/', $_GET['filter'], $filter['matches']) === 1;
   }
   else
@@ -49,26 +48,33 @@ else
 
 if ($filter['enabled'])
 {
+  $filter_key = pwg_get_session_var('filter_check_key', array('user'=>0,'recent_period'=>-1, 'time'=>0, 'date'=> '') );
+
   if (isset($filter['matches']))
   {
     $filter['recent_period'] = $filter['matches'][1];
   }
   else
   {
-    $filter['recent_period'] = pwg_get_session_var('filter_recent_period', $user['recent_period']);
+    $filter['recent_period'] = $filter_key['recent_period']>0 ? $filter_key['recent_period'] : $user['recent_period'];
   }
 
   if (
       // New filter
       !pwg_get_session_var('filter_enabled', false) or
       // Cache data updated
-      $user['need_update_done'] or
+      $filter_key['time'] <= $user['cache_update_time'] or
       // Date, period, user are changed
-      (pwg_get_session_var('filter_check_key', '') != get_filter_check_key())
+      $filter_key['user'] != $user['id'] or
+      $filter_key['recent_period'] != $filter['recent_period'] or
+      $filter_key['date'] != date('Ymd')
     )
   {
     // Need to compute dats
-    $filter['check_key'] = get_filter_check_key();
+    $filter_key = array(
+      'user'=>(int)$user['id'],'recent_period'=>(int)$filter['recent_period'], 'time'=>time(), 'date'=> date('Ymd')
+     );
+
     $filter['categories'] = get_computed_categories($user, (int)$filter['recent_period']);
 
     $filter['visible_categories'] = implode(',', array_keys($filter['categories']));
@@ -103,22 +109,19 @@ WHERE ';
 
     // Save filter data on session
     pwg_set_session_var('filter_enabled', $filter['enabled']);
-    pwg_set_session_var('filter_check_key', $filter['check_key']);
-    pwg_set_session_var('filter_recent_period', $filter['recent_period']);
+    pwg_set_session_var('filter_check_key', $filter_key);
     pwg_set_session_var('filter_categories', serialize($filter['categories']));
     pwg_set_session_var('filter_visible_categories', $filter['visible_categories']);
     pwg_set_session_var('filter_visible_images', $filter['visible_images']);
-
   }
   else
   {
     // Read only data
-    $filter['check_key'] = pwg_get_session_var('filter_check_key', '');
     $filter['categories'] = unserialize(pwg_get_session_var('filter_categories', serialize(array())));
     $filter['visible_categories'] = pwg_get_session_var('filter_visible_categories', '');
     $filter['visible_images'] = pwg_get_session_var('filter_visible_images', '');
   }
-
+  unset($filter_key);
   if (get_filter_page_value('add_notes'))
   {
     $header_notes[] = l10n_dec('note_filter_day', 'note_filter_days', $filter['recent_period']);
@@ -130,7 +133,6 @@ else
   {
     pwg_unset_session_var('filter_enabled');
     pwg_unset_session_var('filter_check_key');
-    pwg_unset_session_var('filter_recent_period');
     pwg_unset_session_var('filter_categories');
     pwg_unset_session_var('filter_visible_categories');
     pwg_unset_session_var('filter_visible_images');
-- 
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