add family logic

app/Http/Requests/Families/FamilyAttachSecondByUserRequest.php

@@ -0,0 +1,22 @@
+<?php
+
+namespace App\Http\Requests\Families;
+
+use App\Http\Requests\ApiFormRequest;
+
+class FamilyAttachSecondByUserRequest extends ApiFormRequest
+{
+    public function authorize(): bool
+    {
+        return auth()->check();
+    }
+
+    public function rules(): array
+    {
+        return [
+            'student_id' => ['required', 'integer', 'min:1'],
+            'user_id' => ['required', 'integer', 'min:1'],
+            'relation' => ['nullable', 'string', 'max:50'],
+        ];
+    }
+}