Add fresh method to model.

This method gets a fresh copy of the model using the ID from the
existing instance.

src/Illuminate/Database/Eloquent/Model.php

@@ -675,6 +675,19 @@ public static function findOrFail($id, $columns = array('*'))
 		throw (new ModelNotFoundException)->setModel(get_called_class());
 	}
 
+	/**
+	 * Reload a fresh model instance from the database.
+	 *
+	 * @param  array  $with
+	 * @return $this
+	 */
+	public function fresh(array $with = array())
+	{
+		$key = $this->getKeyName();
+
+		return $this->exists ? static::with($with)->where($key, $this->getKey())->first() : null;
+	}
+
 	/**
 	 * Eager load relations on the model.
 	 *