Monkey-patch Sinatra to include method and path in the Sinatra::NotFo…

…und exception message.

config/application.rb

@@ -8,6 +8,21 @@
 app_path = File.expand_path("../..", __FILE__)
 Dir["#{app_path}/lib/*.rb"].each { |f| require f }
 
+# Expose the request path in the exception message for Sinatra::NotFound
+# This makes it easier to scan the list of errors in Airbrake to see what paths causes 404 errors
+# https://github.com/sinatra/sinatra/pull/1566
+module Sinatra
+  class Base
+    def route_missing
+      if @app
+        forward
+      else
+        raise NotFound, "#{request.request_method} #{request.path_info}"
+      end
+    end
+  end
+end
+
 # uncomment to get production error pages in development
 # set :environment, :production