merge -r 2094 from branch-1_7 to trunk

- fix: quick search error if the query term contained " or '
- optimized sql query in sync_users (called every time on admin page) - a lot faster when #user_cache_categories is big
- added function Template->delete_block_vars (opposite of assign_block_vars)

git-svn-id: http://piwigo.org/svn/trunk@2095 68402e56-0260-453c-a942-63ccdbb3a9ee

2 files changed, 39 insertions, 2 deletions

diff --git a/include/category_cats.inc.php b/include/category_cats.inc.php
index 80efcd184..a5fe848e5 100644
--- a/include/category_cats.inc.php
+++ b/include/category_cats.inc.php
@@ -385,8 +385,8 @@ if (count($categories) > 0)
     }
 
     $template->assign_var_from_handle('CATEGORIES', 'thumbnails');
-    unset( $template->_tpldata['thumbnails.'] );//maybe write a func for that
+    $template->delete_block_vars('thumbnails', true); // category_default reuse them
   }
   trigger_action('loc_end_index_category_thumbnails', $categories);
 }
-?>
+?>
\ No newline at end of file
diff --git a/include/template.php b/include/template.php
index 0e8f626f0..7d93237e6 100644
--- a/include/template.php
+++ b/include/template.php
@@ -296,6 +296,43 @@ class Template {
     }
 
   /**
+   * Block-level variable deletion. Deletes the last block iteration.
+   * if all is true - all blocks are removed
+   * return true if a deletion occured
+   */
+  function delete_block_vars($blockname, $all=false)
+    {
+      $blocks = explode('.', $blockname);
+      $blockcount = count($blocks);
+      $str = '$this->_tpldata';
+      for ($i = 0; $i < $blockcount; $i++)
+      {
+        $str .= '[\'' . $blocks[$i] . '.\']';
+        eval('$lastiteration = isset('.$str.') ? sizeof('.$str.')-1:-1;');
+        if ($lastiteration==-1)
+        {
+          return false;
+        }
+        if ($i==$blockcount-1)
+        {
+          break;
+        }
+        $str .= '[' . $lastiteration . ']';
+      }
+
+      if ($all==true or $lastiteration==0)
+      {
+        $str ='unset('.$str.');';
+      }
+      else
+      {
+        $str ='unset('.$str.'['.$lastiteration.']);';
+      }
+      eval($str);
+      return true;
+    }
+
+  /**
    * Root-level variable assignment. Adds to current assignments, overriding
    * any existing variable assignment with the same name.
    */