feat(rest): extend REST request to allow OPTIONS without error (#55)

Co-authored-by: Evan Johnson <[email protected]>

Request/RestRequest.php

@@ -0,0 +1,38 @@
+<?php
+
+/**
+ * @copyright Copyright 2017 SplashLab
+ */
+/**
+ * Copyright © Graycore, LLC. All rights reserved.
+ * See LICENSE.md for details.
+ */
+
+namespace Graycore\Cors\Request;
+
+use Magento\Framework\Webapi\Request;
+use Magento\Framework\Exception\InputException;
+
+class RestRequest
+{
+    /**
+     * Triggers before original dispatch
+     *
+     * @param  Request $subject
+     * @return void
+     * @throws InputException
+     */
+    public function aroundGetHttpMethod(
+        Request $subject
+    ) {
+        if (!$subject->isGet()
+            && !$subject->isPost()
+            && !$subject->isPut()
+            && !$subject->isDelete()
+            && !$subject->isOptions()
+        ) {
+            throw new InputException(__('Request method is invalid.'));
+        }
+        return $subject->getMethod();
+    }
+}

etc/webapi_rest/di.xml

@@ -18,6 +18,9 @@
     <type name="Magento\Webapi\Controller\Rest">
         <plugin name="graycoreCorsPreflightHandlerRest" type="Graycore\Cors\Response\Preflight\Rest\PreflightRequestHandler" />
     </type>
+    <type name="Magento\Framework\Webapi\Rest\Request">
+        <plugin name="cors_request_options" type="Graycore\Cors\Request\RestRequest" />
+    </type>
     <type name="Magento\Framework\Webapi\Rest\Response">
         <plugin name="genericWebApiHeaderPlugin" type="Graycore\Cors\Response\HeaderManager"/>
     </type>