Upgraded Rails to 6, getting Blocked host Error
Add this line to config/environments/development.rb
config.hosts << /.*\.ngrok\.io/
Restart your rails server and it will work
If you want to disable this functionality on your development environment, you can add config.hosts.clear
to config/environments/development.rb
.
This article worked for me:
The first option is to whitelist the hostnames in
config/environments/development.rb
:Rails.application.configure do config.hosts << "hostname" # Whitelist one hostname config.hosts << /application\.local\Z/ # Whitelist a test domain end
The second option is to clear the entire whitelist, which lets through requests for all hostnames:
Rails.application.configure do config.hosts.clear end
Credit goes to Manfred Stienstra.
The Blocked Host is a new feature of Rails 6. You can add this pattern to your config/environments/development.rb
to have no worries of that in case of dynamic urls
config.hosts << /[a-z0-9]+\.c9users\.io/
Also for ngrok user, just replace above c9users
by ngrok
Update: ngrok is currently using -
and .
as subdomain in their URLs so this should be accurate config.hosts << /[a-z0-9-.]+\.ngrok\.io/
Source: https://github.com/MikeRogers0/puma-ngrok-tunnel