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deep_transform_keys

deep_transform_keys(&block)

Instance Public methods

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"}}

Links:

https://github.com/rails/rails/blob/6f24aa29d6c2568cd0112d813fe18e519844d94c/activesupport/lib/active_support/core_ext/hash/keys.rb#L84

doc_ruby_on_rails

2025-01-10 15:47:30

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