/**
* Update the specified resource in storage.
*
* @param int $id
* @return Response
*/
public function update($id, Request $request)
{
$vld = Group::validate($request->all(), $id);
if (!$vld->passes()) {
return \Redirect::back()->withErrors($vld->messages());
}
$groups = Group::find($id);
$groups->update(['groupname' => $request->get('groupname'), 'description' => $request->get('description')]);
return redirect()->route('groups.index')->with('messageOk', 'Update group successfully!');
}