feat: Phase 2 - page CRUD, subscriber management, user management

app/Http/Requests/Admin/IndexSubscriberRequest.php

@@ -0,0 +1,32 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Http\Requests\Admin;
+
+use App\Models\PreregistrationPage;
+use Illuminate\Contracts\Validation\ValidationRule;
+use Illuminate\Foundation\Http\FormRequest;
+
+class IndexSubscriberRequest extends FormRequest
+{
+    public function authorize(): bool
+    {
+        $page = $this->route('page');
+        if (! $page instanceof PreregistrationPage) {
+            return false;
+        }
+
+        return $this->user()?->can('view', $page) ?? false;
+    }
+
+    /**
+     * @return array<string, array<int, ValidationRule|string>>
+     */
+    public function rules(): array
+    {
+        return [
+            'search' => ['nullable', 'string', 'max:255'],
+        ];
+    }
+}