first upload all files

Modules/Currency/Http/Requests/UpdateCurrencyRateRequest.php

@@ -0,0 +1,27 @@
+<?php
+
+namespace Modules\Currency\Http\Requests;
+
+use Modules\Core\Http\Requests\Request;
+
+class UpdateCurrencyRateRequest extends Request
+{
+    /**
+     * Available attributes.
+     *
+     * @var string
+     */
+    protected $availableAttributes = 'currency::attributes';
+
+    /**
+     * Get the validation rules that apply to the request.
+     *
+     * @return array
+     */
+    public function rules()
+    {
+        return [
+            'rate' => 'required|numeric|max:9999',
+        ];
+    }
+}