diff --git a/ground/app.php b/ground/app.php
index 966be53..8b18331 100644
--- a/ground/app.php
+++ b/ground/app.php
@@ -4,7 +4,7 @@ function __autoload($className)
 {
     $dirs = array('classes','models','controllers');
 
-    $loaded = flase;
+    $loaded = false;
     foreach ($dirs as $dir) {
         $fileName = dirname(__FILE__) . '/../ground/' . $dir. '/' . $className . '.php';
 
diff --git a/ground/classes/Model.php b/ground/classes/Model.php
index fb3ea48..b9e8a70 100644
--- a/ground/classes/Model.php
+++ b/ground/classes/Model.php
@@ -23,7 +23,7 @@ class Model
 		return isset($this->_vals_[$name]) ? $this->_vals_[$name] : null;
 	}
 
-	function getPk()
+	private function getPk()
 	{
 		$res = App::$DB->query("SHOW KEYS FROM " . $this->_tableName_ . " WHERE Key_name = 'PRIMARY'")->fetch(PDO::FETCH_ASSOC);
 		return $res["Column_name"];
@@ -31,13 +31,16 @@ class Model
 
 	function getByPK($id)
 	{
-		return App::$DB->query('SELECT * FROM ' . $this->_tableName_ . ' WHERE ' . $this->_primaryKey_ . ' = ' . $id)->fetch(PDO::FETCH_ASSOC);
+		$this->_vals_ = App::$DB->query('SELECT * FROM ' . $this->_tableName_ . ' WHERE ' . $this->_primaryKey_ . ' = ' . $id)->fetch(PDO::FETCH_ASSOC);
+        $this->_id_ = $this->_vals_[$this->_primaryKey_];
+        return $this;
 	}
 
 	function getAll()
 	{
 		$res = App::$DB->query('SELECT * FROM ' . $this->_tableName_);
 
+        $this->_id_ = NULL; // Это больше не конкретная запись
 		$ready = array();
 
 		while ($row = $res->fetch(PDO::FETCH_ASSOC))
@@ -60,4 +63,18 @@ class Model
 		return $request->execute((array) $values);
 	}
 
+    function save()
+    {
+        if (!$this->_id_ || !$this->_vals_)
+            return FALSE;
+
+        $values = $this->_vals_;
+        unset($values[$this->_primaryKey_]);
+
+        $request = App::$DB->prepare('UPDATE ' . $this->_tableName_ . ' SET ' . implode('=?, ', array_keys($values)) . '=? WHERE '.$this->_primaryKey_.'='.$this->_id_);
+		$res = $request->execute(array_values($values));
+
+        return $res ? $this : FALSE;
+    }
+
 }