public function stored(Request $request)
    {
        session_start();
        $html = "";
        $vecesenelgrupo = 0;
        $creadormiembro = 0;
        if ($request->ajax()) {
            $group = Group::getGroupById($_SESSION['group']);
            $user = User::getUserById($request->usuario);
            $vecesenelgrupo = $group->users()->where('owner', 0)->where('user_id', $user->id)->where('group_id', $group->id)->count();
            $creadormiembro = $group->users()->where('owner', 1)->where('user_id', $user->id)->where('group_id', $group->id)->count();
            if ($vecesenelgrupo < 1 && $creadormiembro < 1) {
                $group->users()->save($user, ['owner' => 0]);
                $html .= '<div class="col-sm-6 col-md-4">
                      <div class="thumbnail">
                          <button style="margin-left: 88%" type="button" class="btn btn-link delMem" data-botonLeaveMember="{{$members->id}}" ><i class="fa fa-remove"></i></button>
                          <img src="' . asset("img/user.png") . '" class="img-circle img-responsive" alt="owner" width="140" height="140">
                          <div class="caption">
                              <h3 style="text-align: center;">Member</h3>
                              <h4 style="text-align: center;">' . $user->full_name . '</h4>

                          </div>
                      </div>
                  </div>';
            } else {
                if ($creadormiembro >= 1) {
                    echo "<script type='text/javascript'>alert('You can not add yourself, you are the owner.');</script>";
                } else {
                    echo "<script type='text/javascript'>alert('The user is already a member of the group..');</script>";
                }
            }
        }
        return $html;
    }