diff --git a/core/MY_Model.php b/core/MY_Model.php
index 34cb9fe..b4d1c17 100644
--- a/core/MY_Model.php
+++ b/core/MY_Model.php
@@ -801,7 +801,7 @@ public function trigger($event, $data = FALSE, $last = TRUE)
     /**
      * Run validation on the passed data
      */
-    public function validate($data)
+    public function validate($data,$partial=null)
     {
         if($this->skip_validation)
         {
@@ -810,16 +810,26 @@ public function validate($data)
         
         if(!empty($this->validate))
         {
-            foreach($data as $key => $val)
-            {
-                $_POST[$key] = $val;
-            }
-
+            
             $this->load->library('form_validation');
+            $this->form_validation->reset_validation();
+            $this->form_validation->set_data($data); #we are not using $_post hacking..
 
             if(is_array($this->validate))
             {
-                $this->form_validation->set_rules($this->validate);
+            	
+            	$config=array();
+                
+                if(!$partial){
+                    $config = $this->validate;#every rule ablies
+                }else{
+                    foreach ($this->validate as $v)if (isset($data[$v['field']]))$config[] = $v;#validate submited forms only
+                }
+                
+                if (empty($config))return $data;#no validation rules for this $data
+
+            
+                $this->form_validation->set_rules($config);
 
                 if ($this->form_validation->run() === TRUE)
                 {
@@ -890,4 +900,4 @@ protected function _return_type($multi = FALSE)
         $method = ($multi) ? 'result' : 'row';
         return $this->_temporary_return_type == 'array' ? $method . '_array' : $method;
     }
-}
\ No newline at end of file
+}