Method: ActionController::Parameters#converted_arrays

Defined in:

lib/action_controller/metal/strong_parameters.rb

#converted_arrays ⇒ Object

Attribute that keeps track of converted arrays, if any, to avoid double looping in the common use case permit + mass-assignment. Defined in a method to instantiate it only if needed.

Testing membership still loops, but it’s going to be faster than our own loop that converts values. Also, we are not going to build a new array object per fetch.

# File 'lib/action_controller/metal/strong_parameters.rb', line 435

def converted_arrays
  @converted_arrays ||= Set.new
end