Missing argument 2 in Laravel Controller -

i trying log user in , take them page displays content based on slug.

i error :

errorexception in applicantlogincontroller.php line 21: missing argument 2 app\http\controllers\auth\applicantlogincontroller::login() 

this controller :

public function login(request $request, $slug){         //validate form         $this->validate($request, [             'email' => 'required',             'password' => 'required',             'agree' => 'required'         ]);          //attempt log user in         if (auth::guard('applicant')->attempt(['email' => $request->email,'password' => $request->password] )) {          $house = house::where('slug', '=', $slug)->first();         return view('client.index')->withhouse($house);         }          return redirect()->back()->withinput($request->only('email'));     } 

this route page taking them after login :

route::get('client/index/{slug}', ['as' => 'client.index', 'uses' => 'clientregistrationcontroller@index']); 

this login routes :

route::get('client/login', 'auth\applicantlogincontroller@showloginform')->name('client.login'); route::post('/client/login', 'auth\applicantlogincontroller@login')->name('client.login.submit'); 

any ideas on how can solve problem?

this button takes user page content based on slug

<a href="{{ url('client/index/'.$house->slug) }}" class="btn btn-success btn btn-block">book now</a> 

if user not logged in page redirects login page:

<form class="form-horizontal" role="form" method="post" action="{{ route('client.login.submit') }}">                     <input name="_token" type="hidden" value="{{ csrf_token()}}"/>                         <div class="form-group">                             <label for="email" class="col-md-3 control-label"></label>                             <div class="col-md-6">                                 <input type="email" class="form-control" placeholder="your email" name="email" required="">                             </div>                         </div>                          <div class="form-group">                             <label for="password" class="col-md-3 control-label"></label>                             <div class="col-md-6">                                 <input type="password" class="form-control" placeholder="password" name="password" required="">                             </div>                         </div>                          <div class="form-group">                             <div class="col-md-6 col-md-offset-3">                                 <div class="checkbox">                                     <label>                                         <input type="checkbox" name="remember"> remember me                                     </label>                                 </div>                             </div>                         </div>                          <div class="form-group">                             <div class="col-md-6 col-md-offset-3">                                 <div class="checkbox">                                     <label>                                         <input type="checkbox" name="agree" required=""> have read , accepted <a href="" data-toggle="modal" data-target="#mymodal" class="checkbox-terms-client">terms , condition</a>                                     </label>                                 </div>                             </div>                         </div>                          <div class="form-group">                             <div class="col-md-8 col-md-offset-3">                                 <input type="submit" value="login" class="btn btn-primary">                                  </input>                                  <a class="btn btn-link" href="#">                                     forgot password?                                 </a>                             </div>                         </div>                      </form> 

you should have $slug declared in post route:

route::post('/client/login/{slug}', 'auth\applicantlogincontroller@login')->name('client.login.submit'); 

and change form add parameter:

<form class="form-horizontal" role="form" method="post" action="{{ route('client.login.submit', ['slug' => $slug]) }}">