public function update($memberId, Request $request)
 {
     // basic validation
     $validate = Validator::make($request->all(), ['displayName' => 'required']);
     if ($validate->fails()) {
         $message = $validate->messages()->first();
         $e = new InvalidArgumentException();
         $e->setMessage($message);
         throw $e;
     }
     // member validation
     /** @var MemberEntityInterface $member */
     $member = $this->handler->findMember($memberId);
     if ($member === null) {
         throw new MemberNotFoundException();
     }
     $displayName = $request->get('displayName');
     $introduction = $request->get('introduction');
     // displayName validation
     if ($member->getDisplayName() !== trim($displayName)) {
         $this->handler->validateDisplayName($displayName);
     }
     // apply updated
     $member->displayName = $displayName;
     if ($introduction !== null) {
         $member->introduction = $introduction;
     }
     XeDB::beginTransaction();
     try {
         // resolve profile file
         if ($profileFile = $request->file('profileImgFile')) {
             /** @var MemberImageHandler $imageHandler */
             $imageHandler = app('xe.member.image');
             $member->profileImageId = $imageHandler->updateMemberProfileImage($member, $profileFile);
         }
         $this->handler->update($member);
     } catch (\Exception $e) {
         XeDB::rollback();
         throw $e;
     }
     XeDB::commit();
     return redirect()->route('member.profile', [$member->getId()])->with('alert', ['type' => 'success', 'message' => '변경되었습니다.']);
 }
 /**
  * Reset the given user's password.
  *
  * @param  Request  $request
  * @return Response
  */
 public function postPassword(Request $request)
 {
     $this->validate($request, ['token' => 'required', 'email' => 'required|email', 'password' => 'required|confirmed']);
     $credentials = $request->only('email', 'password', 'password_confirmation', 'token');
     $response = $this->passwords->reset($credentials, function ($user, $password) {
         $user->password = bcrypt($password);
         $this->handler->update($user);
         $this->auth->login($user);
     });
     switch ($response) {
         case PasswordBroker::PASSWORD_RESET:
             return redirect('/')->with('status', $response);
         default:
             // password configuration
             $passwordConfig = app('config')->get('xe.member.password');
             $passwordLevel = array_get($passwordConfig['levels'], $passwordConfig['default']);
             return redirect()->back()->withInput($request->only('email'))->with('alert', ['type' => 'danger', 'message' => $passwordLevel['description']]);
     }
 }