undefined params and session hashes in before_filter

Question

Does anybody know why, when using ruby-debug by calling debugger in a method called as a before_filter, the params and session hashes are not defined?

class MyExampleController < ActionController::Base

  before_filter :test_hashes

  def test_hashes
    pp session    
    pp params   #both work as expected..

    debugger #calling the debug console
  end

  def index
    #whatever..
  end

end

#the rdb console
(rdb:5) pp params
NameError Exception: undefined local variable or method 'params' for #<ActionController::Filters::BeforeFilter:0x3eafda0>
(rdb:5) pp session
NameError Exception: undefined local variable or method 'session' for #<ActionController::Filters::BeforeFilter:0x3eafda0>

Is this normal behaviour or am I doing something wrong?

Answer 1

No idea why it doesn't work, but you can get to the variables through controller.params and controller.session

Answer 2

Try putting a b.s. line after the call to debugger and see what happens.