first upload all files

Modules/Import/Http/Requests/StoreImporterRequest.php

@@ -0,0 +1,29 @@
+<?php
+
+namespace Modules\Import\Http\Requests;
+
+use Illuminate\Validation\Rule;
+use Modules\Core\Http\Requests\Request;
+
+class StoreImporterRequest extends Request
+{
+    /**
+     * Available attributes.
+     *
+     * @var string
+     */
+    protected $availableAttributes = 'import::attributes';
+
+    /**
+     * Get the validation rules that apply to the request.
+     *
+     * @return array
+     */
+    public function rules()
+    {
+        return [
+            'import_type' => ['required', Rule::in(['product'])],
+            'csv_file' => ['required', 'file', 'mimes:csv,txt'],
+        ];
+    }
+}