Disabling error reporting from Sinatra to a browser

To disable error reporting to a browser add next line to your application:

disable :show_exceptions

Adding Google Analytics to Sinatra application

To add Google Analytics code to Sinatra application there’s a need to install gem rack-google-analytics.

gem install rack-google-analytics

Add this to your app.rb:

require 'rack-google-analytics'
use Rack::GoogleAnalytics, :tracker => 'UA-XXXXXXXX-X'

And restart the app.

If you encounter en error:

make: g++: Command not found
make: *** [kb.o] Error 127

while trying to update your Ruby gems on Centos, it means that you don’t have C++ compiler installed. Here’s how to fix it:

yum install gcc-c++