The idea is that I am getting the params from a GET request in the form of a Hash (symbol→str) and I want to transform them into dates and booleans. For that reason, I created two private methods to_date and to_b.

class Report
  include ActiveModel::Model

  attr_accessor :start_date, :end_date, :show_sales, :show_daily_active_users,
                :show_registered_cc, :show_all_time_registered_cc, :show_users

  def initialize(params)
    params ||= {}
    @start_date = to_date(params, :start_date, Time.zone.today - 7.days)
    @end_date = to_date params, :end_date, Time.zone.today
    @show_sales = to_b params, :show_sales, true
    @show_daily_active_users = to_b params, :show_daily_active_users, true
    @show_registered_cc = to_b params, :show_registered_cc
    @show_all_time_registered_cc = to_b params, :show_all_time_registered_cc
    @show_users = to_b params, :show_users
  end

  def sales
     (...)
  end

  (...)

  private

  def to_date(params, key, default_val)
    if params.key?(key)
      Date.parse(params[key])
    else
      default_val
    end
  end

  def to_b(params, key, default_true = false)
    default_val = '1' if default_true
    params.fetch(key, default_val) == '1'
  end
end

The problem is that Rubocop says that the Assignment Branch Condition size for the method initialize is too high (15.81 over a limit of 15).

Is there anything I could change to fix that? I don't think that creating a new class just to do that is worth it.