はじまりの大地

backend/config/initializers/cors.sample.rb

@@ -0,0 +1,17 @@
+# Be sure to restart your server when you modify this file.
+
+# Avoid CORS issues when API is called from the frontend app.
+# Handle Cross-Origin Resource Sharing (CORS) in order to accept cross-origin Ajax requests.
+
+# Read more: https://github.com/cyu/rack-cors
+
+Rails.application.config.middleware.insert_before 0, Rack::Cors do
+  allow do
+    # 本番環境では適切なドメインに制限する．
+    origins '*'
+
+    resource '*',
+	     headers: :any,
+	     methods: %i[get post put patch delete options head]
+  end
+end