# File actionpack/lib/action_dispatch/request/utils.rb, line 10
def deep_munge(hash, keys = [])
return hash unless perform_deep_munge
hash.each do |k, v|
keys << k
case v
when Array
v.grep(Hash) { |x| deep_munge(x, keys) }
v.compact!
if v.empty?
hash[k] = nil
ActiveSupport::Notifications.instrument("deep_munge.action_controller", keys: keys)
end
when Hash
deep_munge(v, keys)
end
keys.pop
end
hash
end