fixed and close #15

conlite/classes/class.genericdb.php

@@ -706,26 +706,38 @@ abstract class ItemCollection extends cItemBaseAbstract {
 
     /**
      * Adds a result field
-     * @param  string  $sField
+     * @param  string|array  $mField
      */
-    public function addResultField($sField) {
+    public function addResultField($mField) {
+        if (!is_array($mField)) {
+            $mField = array($mField);
+        }
+
+        foreach ($mField as $sField) {
             $sField = strtolower($sField);
             if (!in_array($sField, $this->_resultFields)) {
                 $this->_resultFields[] = $sField;
             }
         }
+    }
 
     /**
      * Removes existing result field
-     * @param  string  $sField
+     * @param  string|array  $mField
      */
-    public function removeResultField($sField) {
+    public function removeResultField($mField) {
+        if (!is_array($mField)) {
+            $mField = array($mField);
+        }
+        
+        foreach ($mField as $sField) {
             $sField = strtolower($sField);
             $key = array_search($sField, $this->_resultFields);
             if ($key !== false) {
                 unset($this->_resultFields[$key]);
             }
         }
+    }
 
     /**
      * Returns reverse join partner.