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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!
StringifyKeys.stringify_keys!(self)
self
end
# Return a new hash with all keys converted
# to strings.
def stringify_keys
dup.stringify_keys!
end
module ClassMethods
# Stringify all keys recursively within nested
# hashes and arrays.
# @api private
def stringify_keys_recursively!(object)
case object
when self.class
object.stringify_keys!
when ::Array
object.each do |i|
stringify_keys_recursively!(i)
end
when ::Hash
stringify_keys!(object)
end
end
# Convert all keys in the hash to strings.
#
# @param [::Hash] hash
# @example
# test = {:abc => 'def'}
# test.stringify_keys!
# test # => {'abc' => 'def'}
def stringify_keys!(hash)
hash.keys.each do |k|
stringify_keys_recursively!(hash[k])
hash[k.to_s] = hash.delete(k)
end
hash
end
# Return a copy of hash with all keys converted
# to strings.
# @param [::Hash] hash
def stringify_keys(hash)
hash.dup.tap do | new_hash |
stringify_keys! new_hash
end
end
end
class << self
include ClassMethods
end
end
end
end
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