add role permission logic

app/Http/Requests/Roles/PermissionUpdateRequest.php

@@ -0,0 +1,24 @@
+<?php
+
+namespace App\Http\Requests\Roles;
+
+use App\Http\Requests\ApiFormRequest;
+use Illuminate\Validation\Rule;
+
+class PermissionUpdateRequest extends ApiFormRequest
+{
+    public function authorize(): bool
+    {
+        return auth()->check();
+    }
+
+    public function rules(): array
+    {
+        $permissionId = (int) $this->route('permissionId');
+
+        return [
+            'name' => ['sometimes', 'string', 'max:255', Rule::unique('permissions', 'name')->ignore($permissionId)],
+            'description' => ['nullable', 'string', 'max:500'],
+        ];
+    }
+}