app/controllers/concerns/continue_to_params.rb


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module ContinueToParams
  extend ActiveSupport::Concern

  def continue_params
    continue_params = params[:continue]
    return nil unless continue_params

    continue_params       = continue_params.permit(:to, :notice, :notice_now)
    continue_params[:to]  = root_url unless continue_params[:to].start_with?('/')

    continue_params
  end
end