3 files changed, 58 insertions, 22 deletions

diff --git a/admin/cat_modify.php b/admin/cat_modify.php
index 00f52abd4..fc54301d1 100644
--- a/admin/cat_modify.php
+++ b/admin/cat_modify.php
@@ -80,6 +80,10 @@ if ( isset( $_POST['submit'] ) )
 
   $template->assign_block_vars('confirmation' ,array());
 }
+else if (isset($_POST['set_random_representant']))
+{
+  set_random_representant(array($_GET['cat_id']));
+}
 
 $query = '
 SELECT *
@@ -157,10 +161,27 @@ $template->assign_vars(array(
   'L_YES'=>$lang['yes'],
   'L_NO'=>$lang['no'],
   'L_SUBMIT'=>$lang['submit'],
+  'L_SET_RANDOM_REPRESENTANT'=>$lang['set_random_representant'],
    
   'F_ACTION'=>add_session_id($form_action)
   ));
-  
+
+if ($category['nb_images'] > 0)
+{
+  $query = '
+SELECT tn_ext,path
+  FROM '.IMAGES_TABLE.'
+  WHERE id = '.$category['representative_picture_id'].'
+;';
+  $row = mysql_fetch_array(pwg_query($query));
+  $src = get_thumbnail_src($row['path'], @$row['tn_ext']);
+  $url = PHPWG_ROOT_PATH.'admin.php?page=picture_modify';
+  $url.= '&image_id='.$category['representative_picture_id'];
+  $template->assign_block_vars('representant',
+                               array('SRC' => $src,
+                                     'URL' => $url));
+}
+
 if (!empty($category['dir']))
 {
   $template->assign_block_vars('storage' ,array());
diff --git a/admin/include/functions.php b/admin/include/functions.php
index 7a12be755..8ae7929ae 100644
--- a/admin/include/functions.php
+++ b/admin/include/functions.php
@@ -453,7 +453,9 @@ function update_category($id = 'all')
   $cat_ids = array();
   
   $query = '
-SELECT category_id, COUNT(image_id) AS count, max(date_available) AS date_last
+SELECT category_id,
+       COUNT(image_id) AS nb_images,
+       MAX(date_available) AS date_last
   FROM '.IMAGES_TABLE.'
     INNER JOIN '.IMAGE_CATEGORY_TABLE.' ON id = image_id';
   if (is_numeric($id))
@@ -471,10 +473,10 @@ SELECT category_id, COUNT(image_id) AS count, max(date_available) AS date_last
     array_push($cat_ids, $row['category_id']);
     array_push($datas, array('id' => $row['category_id'],
                              'date_last' => $row['date_last'],
-                             'count' => $row['count']));
+                             'nb_images' => $row['nb_images']));
   }
   $fields = array('primary' => array('id'),
-                  'update'  => array('date_last', 'count'));
+                  'update'  => array('date_last', 'nb_images'));
   mass_updates(CATEGORIES_TABLE, $fields, $datas);
 
   if (count($cat_ids) > 0)
@@ -839,11 +841,10 @@ function mass_updates($tablename, $dbfields, $datas)
   // update queries
   $query = 'SELECT VERSION() AS version;';
   $row = mysql_fetch_array(pwg_query($query));
-  if (version_compare($row['version'],'4.0.4') < 0)
+  if (count($datas) < 10 or version_compare($row['version'],'4.0.4') < 0)
   {
     // MySQL is prior to version 4.0.4, multi table update feature is not
     // available
-    echo 'MySQL is prior to version 4.0.4, multi table update feature is not available<br />';
     foreach ($datas as $data)
     {
       $query = '
@@ -914,7 +915,7 @@ PRIMARY KEY (id)
 )
 ;';
     pwg_query($query);
-    mass_inserts($tablename, $all_fields, $datas);
+    mass_inserts($tablename.'_temporary', $all_fields, $datas);
     // update of images table by joining with temporary table
     $query = '
 UPDATE '.$tablename.' AS t1, '.$tablename.'_temporary AS t2
@@ -1092,4 +1093,32 @@ UPDATE '.CATEGORIES_TABLE.'
     pwg_query($query);
   }
 }
+
+/**
+ * set a new random representant to the categories
+ *
+ * @param array categories
+ */
+function set_random_representant($categories)
+{
+  $datas = array();
+  foreach ($categories as $category_id)
+  {
+    $query = '
+SELECT image_id
+  FROM '.IMAGE_CATEGORY_TABLE.'
+  WHERE category_id = '.$category_id.'
+  ORDER BY RAND()
+  LIMIT 0,1
+;';
+    list($representative) = mysql_fetch_array(pwg_query($query));
+    $data = array('id' => $category_id,
+                  'representative_picture_id' => $representative);
+    array_push($datas, $data);
+  }
+
+  $fields = array('primary' => array('id'),
+                  'update' => array('representative_picture_id'));
+  mass_updates(CATEGORIES_TABLE, $fields, $datas);
+}
 ?>
diff --git a/admin/update.php b/admin/update.php
index 45bef3bce..aca5307ea 100644
--- a/admin/update.php
+++ b/admin/update.php
@@ -515,21 +515,7 @@ INSERT INTO '.IMAGE_CATEGORY_TABLE.'
 ;';
     pwg_query($query);
 
-    // set a new representative element for this category
-    $query = '
-SELECT image_id
-  FROM '.IMAGE_CATEGORY_TABLE.'
-  WHERE category_id = '.$category_id.'
-  ORDER BY RAND()
-  LIMIT 0,1
-;';
-    list($representative) = mysql_fetch_array(pwg_query($query));
-    $query = '
-UPDATE '.CATEGORIES_TABLE.'
-  SET representative_picture_id = '.$representative.'
-  WHERE id = '.$category_id.'
-;';
-    pwg_query($query);
+    set_random_representant(array($category_id));
   }
   return $output;
 }