different names in different dynamics

app/Http/Controllers/ParticipantController.php

@@ -0,0 +1,24 @@
+<?php
+
+namespace App\Http\Controllers;
+
+use App\Models\Dynamic;
+use Illuminate\Http\Request;
+
+class ParticipantController extends Controller
+{
+    public function update(Request $request, Dynamic $dynamic)
+    {
+        $request->validate([
+            'display_name' => ['required', 'string', 'max:255'],
+        ]);
+
+        $participant = $dynamic->participants()->where('user_id', $request->user()->id)->firstOrFail();
+
+        $dynamic->participants()->updateExistingPivot($participant->id, [
+            'display_name' => $request->input('display_name'),
+        ]);
+
+        return redirect()->back()->with('success', 'Display name updated successfully!');
+    }
+}