public function store(Request $request)
{
$this->validate($request, ['user_id' => 'required', 'book_id' => 'required']);
$user_id = Input::get('user_id');
$book_id = Input::get('book_id');
$delete_succeed = Lend::where('user_id', '=', "{$user_id}")->where('book_id', '=', "{$book_id}")->delete();
if ($delete_succeed) {
return Redirect::to('admin/return');
} else {
return Redirect::back()->withErrors('删除失败！');
}
}
