From 6051c052219dc9efe183e92575f4dfbd170e177f Mon Sep 17 00:00:00 2001
From: Caozhenhui <823914102@qq.com>
Date: Tue, 9 Nov 2021 13:55:43 +0800
Subject: [PATCH] Resolved ERROR:PUT method not found

---
 myems-api/app.py | 32 +++++++++++++++++++++++++++-----
 1 file changed, 27 insertions(+), 5 deletions(-)

diff --git a/myems-api/app.py b/myems-api/app.py
index 0e652872..5bfe93c8 100644
--- a/myems-api/app.py
+++ b/myems-api/app.py
@@ -91,12 +91,34 @@ from reports import virtualmetercost
 
 # https://github.com/lwcolton/falcon-cors
 # https://github.com/yohanboniface/falcon-multipart
-cors = CORS(allow_all_origins=True,
-            allow_credentials_all_origins=True,
-            allow_all_headers=True,
-            allow_all_methods=True)
-api = falcon.App(middleware=[falcon.CORSMiddleware(allow_origins='*', expose_headers=['Allow']), MultipartMiddleware()])
+class CORSComponent:
 
+    def process_response(self, req, resp, resource, req_succeeded):
+        resp.set_header('Access-Control-Allow-Origin', '*')
+
+        if (req_succeeded
+            and req.method == 'OPTIONS'
+            and req.get_header('Access-Control-Request-Method')
+        ):
+            # NOTE: This is a CORS preflight request. Patch the
+            #   response accordingly.
+
+            allow = req.get_header('Access-Control-Request-Method')
+            # resp.delete_header('Allow')
+
+            allow_headers = req.get_header(
+                'Access-Control-Request-Headers',
+                default='*'
+            )
+
+            resp.set_headers((
+                ('Access-Control-Allow-Methods', allow),
+                ('Access-Control-Allow-Headers', allow_headers),
+                ('Access-Control-Max-Age', '86400'),  # 24 hours
+            ))
+
+
+api = falcon.App(middleware=[CORSComponent(), MultipartMiddleware()])
 
 ########################################################################################################################
 # Routes for System Core