- image rating on picture page done through ajax (tested safari/ie 6&7/ff)

git-svn-id: http://piwigo.org/svn/trunk@2435 68402e56-0260-453c-a942-63ccdbb3a9ee

include/functions_rate.inc.php

@@ -36,14 +36,14 @@ function rate_picture($image_id, $rate)
       or !$conf['rate']
       or !in_array($rate, $conf['rate_items']))
   {
-    return;
+    return false;
   }
 
   $user_anonymous = is_autorize_status(ACCESS_CLASSIC) ? false : true;
 
   if ($user_anonymous and !$conf['rate_anonymous'])
   {
-    return;
+    return false;
   }
 
   $ip_components = explode('.', $_SERVER["REMOTE_ADDR"]);
@@ -118,17 +118,20 @@ INSERT
 
   // update of images.average_rate field
   $query = '
-SELECT ROUND(AVG(rate),2) AS average_rate
+SELECT COUNT(rate) AS count
+     , ROUND(AVG(rate),2) AS average
+     , ROUND(STD(rate),2) AS stdev
   FROM '.RATE_TABLE.'
   WHERE element_id = '.$image_id.'
 ;';
-  $row = mysql_fetch_array(pwg_query($query));
+  $row = mysql_fetch_assoc(pwg_query($query));
   $query = '
 UPDATE '.IMAGES_TABLE.'
-  SET average_rate = '.$row['average_rate'].'
+  SET average_rate = '.$row['average'].'
   WHERE id = '.$image_id.'
 ;';
   pwg_query($query);
+  return $row;
 }
 
 ?>

include/ws_functions.inc.php

@@ -775,6 +775,41 @@ SELECT id, date, author, content
   return new PwgNamedStruct('image',$ret, null, array('name','comment') );
 }
 
+
+/**
+ * rates the image_id in the parameter
+ */
+function ws_images_Rate($params, &$service)
+{
+  $image_id = (int)$params['image_id'];
+  $query = '
+SELECT DISTINCT id FROM '.IMAGES_TABLE.'
+  INNER JOIN '.IMAGE_CATEGORY_TABLE.' ON id=image_id
+  WHERE id='.$image_id
+  .get_sql_condition_FandF(
+    array(
+        'forbidden_categories' => 'category_id',
+        'forbidden_images' => 'id',
+      ),
+    '    AND'
+    ).'
+    LIMIT 1';
+  if ( mysql_num_rows( pwg_query($query) )==0 )
+  {
+    return new PwgError(404, "Invalid image_id or access denied" );
+  }
+  $rate = (int)$params['rate'];
+  include_once(PHPWG_ROOT_PATH.'include/functions_rate.inc.php');
+  $res = rate_picture( $image_id, $rate );
+  if ($res==false)
+  {
+    global $conf;
+    return new PwgError( 403, "Forbidden or rate not in ". implode(',',$conf['rate_items']));
+  }
+  return $res;
+}
+
+
 /**
  * returns a list of elements corresponding to a query search
  */