Rails - Aug 2006 - Params being overwritten - how is this possible?

Hi all,

I''m trying to come up with a simple way to handle the user hitting a 
back button in a particular scenario, and I think flashing the params[] 
array would be a simple solution.  However, I have a piece of code that 
is doing something very unexpected in the controller.  The start of the 
controller looks like this:

def index
    logger.debug("VALUE OF PARAMS IS: #{params}")

    #handle the case when the user hit the back button
    if !flash[:params].nil?
      logger.debug("OVERWRITING PARAMS")
      params = flash[:params]
    else
      logger.debug("USING REGULAR PARAMS: #{params}")
    end
...


And I get this in the logs:

VALUE OF PARAMS IS: isbnurihttp://www.amazon.co.u (... rest of params)
USING REGULAR PARAMS:

So, it''s as if the parameter array is being wiped clean, even though
the
"if" block of the code isn''t being exectued, only the else
block.

How is this possible?

Thanks!
Tom

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