Rails render view outside controller

render.rb

    class FakeController < ActionController::Base
      include ApplicationHelper

      def current_user
        @current_user ||= User.find(params[:user_id])
      end
    end
    
    renderer = FakeController.renderer.new(
      'action_dispatch.request.path_parameters' => {
        user_id: 4685
      }
    )
    renderer.render(file: 'shared/events/index.pdf.erb', layout: "layouts/pdf", assigns: {events: Event.where(id: 463385), organization: Organization.find(42)})