[Facebooker-talk] alias_method_chain in Facebooker Causing Stack Level Too Deep

David Law daklaw at gmail.com
Tue Jan 20 16:11:07 EST 2009


I installed the Facebooker plugin and upon placing it on a staging server, I
keep running into stack level too deep errors.  It seems to stem from
Facebooker using alias_method_chain to override some of the
ActionController methods.  I believe it's getting loaded twice causing
confusion.  I've tried various methods include wrapping a unless
respond_to?(:method) around the alias_method_chain call to keep it
from being called twice.  However, none of this has worked?  Has anyone run
into this problem and found a remedy?  I know alias_method_chain is a pretty
popular way to override methods, so I
can't imagine this being the first instance of alias_method_chain causing
this problem.  Here is some of the sample code I'm looking to fix:

module ::ActionController
  class Base
    def self.inherited_with_facebooker(subclass)
      inherited_without_facebooker(subclass)
      if subclass.to_s == "ApplicationController"
        subclass.send(:include,Facebooker::Rails::Controller)
        subclass.helper Facebooker::Rails::Helpers
      end
    end
    class << self
      unless ActionController::Base.respond_to?
(:inherited_with_facebooker)
        alias_method_chain :inherited, :facebooker
      end

    end
  end
end
Here you can see the method inherited has been aliased to
inherited_with_facebooker and inherited_without_facebooker has been aliased
to inherited.  However, when the method is called
inherited_without_facebooker goes into an endless recursive call which
results in a stack level too deep error.  I tried to prevent
alias_method_chain from being called twice (which is what I suspect the
problem being) by checking if inherited_with_facebooker already exists.  It
has not seemed to fix the problem.  Does anyone else have a possible
solution I may try.  Thanks again!
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