instance method `deep_transform_keys`

Ruby on Rails 7.1.6

Since v4.0.13

Available in: v4.0.13 v4.1.16 v4.2.9 v5.2.8.1 v6.0.6 v6.1.7.10 v7.0.10 v7.1.6 v7.2.3 v8.0.4 v8.1.2

Compare with:

deep_transform_keys(&block)

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"}}

Parameters

block block

Source

# File activesupport/lib/active_support/core_ext/hash/keys.rb, line 65
  def deep_transform_keys(&block)
    _deep_transform_keys_in_object(self, &block)
  end

Defined in activesupport/lib/active_support/core_ext/hash/keys.rb line 65 · View on GitHub · Improve this page · Find usages on GitHub

Defined in Hash

Signature

Parameters