method

deep_transform_keys

v4.2.7 - Show latest stable - 0 notes - Class: Hash

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What's this?

deep_transform_keys(&block) public

Returns a new hash with all keys converted by the block operation. This includes the keys from the root hash and from all nested hashes and arrays.

hash = { person: { name: 'Rob', age: '28' } }

hash.deep_transform_keys{ |key| key.to_s.upcase }
# => {"PERSON"=>{"NAME"=>"Rob", "AGE"=>"28"}}

Show source

# File activesupport/lib/active_support/core_ext/hash/keys.rb, line 88
  def deep_transform_keys(&block)
    _deep_transform_keys_in_object(self, &block)
  end

deep_transform_keys

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