method

slice

v7.1.3.4 - Show latest stable - 0 notes - Class: Parameters

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What's this?

slice(*keys) public

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) # => #<ActionController::Parameters {"a"=>1, "b"=>2} permitted: false>
params.slice(:d)     # => #<ActionController::Parameters {} permitted: false>

Show source

# File actionpack/lib/action_controller/metal/strong_parameters.rb, line 721
    def slice(*keys)
      new_instance_with_inherited_permitted_status(@parameters.slice(*keys))
    end

slice

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