betterBeforeFiltersForPadrino.rb

class AllButPattern 
  @@match = Struct.new(:captures)

  def initialize(app, *exceptions) 
    @controller = app.current_controller   
    @app = app
    @exceptions = exceptions
    @captures = @@match.new([])
  end

  def match(str)      
    if @exceptions.first.is_a?(Symbol)    
      @exceptions.each do |except| 
        if except.to_s.index('_')      
          if @app.router.runner.params.empty? 
            return @captures if @app.router.named_routes[except].path != str  
          else
            return @captures if @app.router.named_routes[except].url(@app.router.runner.params)[0] != str 
          end
        else 
          route_name = @controller.to_s << '_' << except.to_s 
          if @app.router.runner.params.empty? 
            return @captures if @app.router.named_routes[route_name.to_sym].path != str 
          else        
            return @captures if @app.router.named_routes[route_name.to_sym].url(@app.router.runner.params)[0] != str  
          end
        end
      end 
    elsif @exceptions.is_a?(Array)
      @captures unless @exceptions.include?(str)   
    end
    false
  end   
end       

def all_but(*args)   
  AllButPattern.new(self, *args)
end

test.rb

Brkit.controllers :user do      
  
  before all_but(:bob) do   
    puts "you've been hit before?"
  end     
  
  get :bob, :map => '/bob' do
    return 'bobs your uncle'
  end
  
  get :testget, :map => '/testget' do
    return 'test GET'
  end 
end