Global before and after filters in Padrino

December 5, 2013

Adding before and after filters in Padrino is very easy. According to the Padrino documentation you add before and after filters by adding a block named before at the top of your controller.

# Before filter in Padrino
before do
    #insert code or / and function calls here
end

In Padrino the before and after filters are scoped to the controller they are added in. The documentation does not say anything about global filters. After thinking about this for a bit I tried to add before filters to the app.rb file that is located in the root of your app folder. Here is an example of how the app.rb file looks.

module ProjectName
  class App < Padrino::Application
    register SassInitializer
    use ActiveRecord::ConnectionAdapters::ConnectionManagement
    register Padrino::Rendering
    register Padrino::Mailer
    register Padrino::Helpers
    enable :sessions

    # Before filter
    before do
      # Code, function and helper calls goes here
    end

    # After filter
    after do
      # Code, function and helper calls goes here
    end
  end
end

I’m not sure if this is the correct or best way of adding global before and after filters in Padrino, but it works just fine and I haven’t seen any side effects of it.