Eliminate the search context if we encounter an item that cannot be

found in the search results.  Fixes #1923.

2 files changed, 15 insertions, 1 deletions

diff --git a/modules/gallery/helpers/item.php b/modules/gallery/helpers/item.php
index d8b660d9..b739e8bd 100644
--- a/modules/gallery/helpers/item.php
+++ b/modules/gallery/helpers/item.php
@@ -415,6 +415,13 @@ class item_Core {
   }
 
   /**
+   * Get rid of the display context callback
+   */
+  static function clear_display_context_callback() {
+    Cache::instance()->delete("display_context_" . $sid = Session::instance()->id());
+  }
+
+  /**
    * Call the display context callback for the given item
    */
   static function get_display_context($item) {
diff --git a/modules/search/helpers/search.php b/modules/search/helpers/search.php
index b7fa21c4..64a13825 100644
--- a/modules/search/helpers/search.php
+++ b/modules/search/helpers/search.php
@@ -117,7 +117,14 @@ class search_Core {
 
     // Truncate the score by two decimal places as this resolves the issues
     // that arise due to in exact numeric conversions.
-    $score = $db->query($query)->current()->score;
+    $current = $db->query($query)->current();
+    if (!$current) {
+      // We can't find this result in our result set - perhaps we've fallen out of context?  Clear
+      // the context and try again.
+      item::clear_display_context_callback();
+      url::redirect(url::current());
+    }
+    $score = $current->score();
     if (strlen($score) > 7) {
       $score = substr($score, 0, strlen($score) - 2);
     }