Started a flight view

app/Http/Controllers/Auth/RegisteredUserController.php

@@ -8,7 +8,9 @@ use Illuminate\Auth\Events\Registered;
 use Illuminate\Http\RedirectResponse;
 use Illuminate\Http\Request;
 use Illuminate\Support\Facades\Auth;
+use Illuminate\Support\Facades\DB;
 use Illuminate\Support\Facades\Hash;
+use Illuminate\Support\Facades\Validator;
 use Illuminate\Validation\Rules;
 use Illuminate\Validation\ValidationException;
 use Inertia\Inertia;
@@ -31,12 +33,21 @@ class RegisteredUserController extends Controller
      */
     public function store(Request $request): RedirectResponse
     {
-        $request->validate([
-            'name' => 'required|string|max:255',
+
+        $validator = Validator::make($request->all(), [
+            'name' => 'required|string|max:32|alpha_dash',
             'email' => 'required|string|lowercase|email|max:255|unique:'.User::class,
             'password' => ['required', 'confirmed', Rules\Password::defaults()],
         ]);
 
+        $validator->after(function ($validator) use ($request) {
+            if (User::whereRaw(DB::raw('LOWER(name) = ?'), [strtolower($request->name)])->exists()) {
+                $validator->errors()->add('name', 'The name has already been taken.');
+            }
+        });
+
+        $validator->validate();
+
         $user = User::create([
             'name' => $request->name,
             'email' => $request->email,