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module ActionDispatch
class Request < Rack::Request
class Utils # :nodoc:
mattr_accessor :perform_deep_munge
self.perform_deep_munge = true
class << self
# Remove nils from the params hash
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
end
end
end
end
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