You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: attendance_controller.rb
    path of file: ./repos/onebody/app/controllers
    
    the code of the file until where you have to start completion: class AttendanceController < ApplicationController
  skip_before_action :au
    
  def create
    batch = AttendanceBatch.new(@group, params[:attended_at])
    batch.update(params[:ids])
    batch.create_unlinked(params[:person]) if params[:person]
    respond_to do |format|
      format.html do
        redirect_to group_attendance_index_path(@group, attended_at: batch.attended_at)
      end
      format.json do
        render json: { status: 'success' }
      end
    end
  end