allow to use the username for login as well

add translation strings

app/Http/Controllers/Auth/LoginController.php

@@ -87,8 +87,11 @@ class LoginController extends Controller
      */
     public function login(Request $request)
     {
+        // Check wether login is an email address or a username
+        $isEmail = str_contains($request->input('user'), '@');
+
         $this->validate($request, [
-            'email' => 'required|email',
+            'user' => $isEmail ? 'required|email' : 'required',
             'password' => 'required',
         ]);
 
@@ -98,9 +101,9 @@ class LoginController extends Controller
             return $this->sendLockoutResponse($request);
         }
 
-        // Is the email & password valid?
+        // Is the user (email or username) & password valid?
         if (! Auth::once([
-            'email' => $request->input('email'),
+            $isEmail ? 'email' : 'username' => $request->input('user'),
             'password' => $request->input('password'),
         ], $request->has('remember'))) {
             if (! $lockedOut) {

resources/lang/en/strings.php

@@ -2,6 +2,7 @@
 
 return [
     'email' => 'Email',
+    'user_identifier' => 'Email or password',
     'password' => 'Password',
     'confirm_password' => 'Confirm Password',
     'login' => 'Login',

resources/themes/pterodactyl/auth/login.blade.php

@@ -47,7 +47,7 @@
     <p class="login-box-msg">@lang('auth.authentication_required')</p>
     <form action="{{ route('auth.login') }}" method="POST">
         <div class="form-group has-feedback">
-            <input type="email" name="email" class="form-control" value="{{ old('email') }}" placeholder="@lang('strings.email')">
+            <input name="user" class="form-control" value="{{ old('user') }}" placeholder="@lang('strings.user_identifier')">
             <span class="fa fa-envelope form-control-feedback"></span>
         </div>
         <div class="form-group has-feedback">