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transform_keys

transform_keys()

Instance Public methods

Returns a new hash with all keys converted using the block operation.

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

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

Links:

https://github.com/rails/rails/blob/6f24aa29d6c2568cd0112d813fe18e519844d94c/activesupport/lib/active_support/core_ext/hash/keys.rb#L8

doc_ruby_on_rails

2015-06-20 00:00:00

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