You probably don't want Google crawling your development staging app. Here's how to fix that.
$ mv public/robots.txt config/robots.production.txt
$ cp config/robots.production.txt config/robots.development.txt
Now edit config/routes.rb
to add a route for /robots.txt
, and add the controller code.
This approach failed for me after updating to
Rails 5.1
, but the code below worked instead: