How to disable “Cannot Render Console from…” on Rails

Question

I\'m using Ubuntu/vagrant as my development environment. I\'m getting these messages on rails console:

Started GET \"/assets/home-fcec5b5a277ac7c20cc9f45a209         


        

Answer 1

If you are using Docker most likely you don't want neither to introduce new ENV variables nor to hardcode your specific IP address.

Instead you may want to check that you are in Docker using /proc/1/cgroup, and to allow your host IP (both for web_console and better_errors). Add to your config/environments/development.rb

  # https://stackoverflow.com/a/20012536/4862360
  if File.read('/proc/1/cgroup').include?('docker')
    # https://stackoverflow.com/a/24716645/4862360
    host_ip = `/sbin/ip route|awk '/default/ { print $3 }'`.strip

    BetterErrors::Middleware.allow_ip!(host_ip) if defined?(BetterErrors::Middleware)
    config.web_console.whitelisted_ips << host_ip
  end