Rails 3.0.5
Code that runs fine in 1.8.7 is balking in 1.9.2

I guess 1.9 has fundamentally changed something like this (assuming keys
are symbols):

my_hash.each do |key, value|
  my_hash[key.to_s] = value
end

to now require something like this:

my_hash.dup.each do |key, value|
  my_hash[key.to_s] = my_hash.delete(key)
end

However, I am getting the error at this simple line (the first line in a
little method to stuff params with some values):

params[:search_form] ||= {}

There is no iteration.

Even changing it to this didn't help. Didn't really think it would, but
tried it anyway.

if !params.has_key?(:search_form)
  params.store(:search_form, {})
end

Anyone know what the deal is here? Thanks.

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