instance method `slice`

Ruby on Rails 4.1.16

Since v4.0.13

Available in: v4.0.13 v4.1.16 v4.2.9 v5.2.8.1 v6.0.6 v6.1.7.10 v7.0.10 v7.1.6 v7.2.3 v8.0.4 v8.1.2

Compare with:

slice(*keys)

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)     # => {}

Parameters

keys rest

Source

# File actionpack/lib/action_controller/metal/strong_parameters.rb, line 314
    def slice(*keys)
      self.class.new(super).tap do |new_instance|
        new_instance.permitted = @permitted
      end
    end

Defined in actionpack/lib/action_controller/metal/strong_parameters.rb line 314 · View on GitHub · Improve this page · Find usages on GitHub

Defined in ActionController::Parameters

Signature

Parameters