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module Hashie
module Extensions
module StringifyKeys
# Convert all keys in the hash to strings.
#
# @example
# test = {:abc => 'def'}
# test.stringify_keys!
# test # => {'abc' => 'def'}
def stringify_keys!
keys.each do |k|
stringify_keys_recursively!(self[k])
self[k.to_s] = delete(k)
end
self
end
# Return a new hash with all keys converted
# to strings.
def stringify_keys
dup.stringify_keys!
end
protected
# Stringify all keys recursively within nested
# hashes and arrays.
def stringify_keys_recursively!(object)
if self.class === object
object.stringify_keys!
elsif ::Array === object
object.each do |i|
stringify_keys_recursively!(i)
end
object
elsif object.respond_to?(:stringify_keys!)
object.stringify_keys!
else
object
end
end
end
end
end
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