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slice

slice(*keys)

Instance Public methods

Returns a new ActionController::Parameters instance that includes only the given keys. If the given keys don't exist, returns an empty hash.

params = ActionController::Parameters.new(a: 1, b: 2, c: 3)
params.slice(:a, :b) # => {"a"=>1, "b"=>2}
params.slice(:d)     # => {}

Links:

https://github.com/rails/rails/blob/c7d93fb58077c1f43967ad79f15f2ae4beec44dd/actionpack/lib/action_controller/metal/strong_parameters.rb#L314

doc_ruby_on_rails

2015-06-20 00:00:00

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