index_by

index_by()

Instance Public methods

Convert an enumerable to a hash.

people.index_by(&:login)
  => { "nextangle" => <Person ...>, "chade-" => <Person ...>, ...}
people.index_by { |person| "#{person.first_name} #{person.last_name}" }
  => { "Chade- Fowlersburg-e" => <Person ...>, "David Heinemeier Hansson" => <Person ...>, ...}

Links:

https://github.com/rails/rails/blob/a476020567a47f5fbec3629707d5bf31b400a284/activesupport/lib/active_support/core_ext/enumerable.rb#L34

doc_ruby_on_rails

2015-06-20 00:00:00

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