From 1a0d76c43e3545771ae3e1c6ad6ba255beeae32d Mon Sep 17 00:00:00 2001
From: Bharat Mediratta <bharat@menalto.com>
Date: Mon, 13 Sep 2010 22:23:09 -0700
Subject: When moving a single item, just copy its permissions from its parent
 album.  This is totally legal since an items permissions must be the same as
 its parent's, and it's much faster for large installs where a complete
 recalculation can be very costly.  Should fix #1360.

---
 modules/gallery/helpers/access.php | 30 ++++++++++++++++++++++++++----
 1 file changed, 26 insertions(+), 4 deletions(-)

(limited to 'modules/gallery/helpers/access.php')

diff --git a/modules/gallery/helpers/access.php b/modules/gallery/helpers/access.php
index 86ea9572..52a36298 100644
--- a/modules/gallery/helpers/access.php
+++ b/modules/gallery/helpers/access.php
@@ -263,21 +263,43 @@ class access_Core {
   }
 
   /**
-   * Recalculate the permissions for a given item and its hierarchy.  $item must be an album.
+   * Recalculate the permissions for an album's hierarchy.
    */
-  static function recalculate_permissions($item) {
+  static function recalculate_album_permissions($album) {
     foreach (self::_get_all_groups() as $group) {
       foreach (ORM::factory("permission")->find_all() as $perm) {
         if ($perm->name == "view") {
-          self::_update_access_view_cache($group, $item);
+          self::_update_access_view_cache($group, $album);
         } else {
-          self::_update_access_non_view_cache($group, $perm->name, $item);
+          self::_update_access_non_view_cache($group, $perm->name, $album);
         }
       }
     }
     model_cache::clear();
   }
 
+  /**
+   * Recalculate the permissions for a single photo.
+   */
+  static function recalculate_photo_permissions($photo) {
+    $parent = $photo->parent();
+    $parent_access_cache = ORM::factory("access_cache")->where("item_id", "=", $parent->id)->find();
+    $photo_access_cache = ORM::factory("access_cache")->where("item_id", "=", $photo->id)->find();
+    foreach (self::_get_all_groups() as $group) {
+      foreach (ORM::factory("permission")->find_all() as $perm) {
+        $field = "{$perm->name}_{$group->id}";
+        if ($perm->name == "view") {
+          $photo->$field = $parent->$field;
+        } else {
+          $photo_access_cache->$field = $parent_access_cache->$field;
+        }
+      }
+    }
+    $photo_access_cache->save();
+    $photo->save();
+    model_cache::clear();
+  }
+
   /**
    * Register a permission so that modules can use it.
    *
-- 
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