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: voting_members_controller.rb
    path of file: ./repos/arooo/app/controllers/members
    
    the code of the file until where you have to start completion: class Members::VotingMembersController < Members::MembersController
  ALL_AGREEMENTS = %w[confidentiality attended_training policy
    
  def update
    if agreements_missing?
      flash[:error] = "You must agree to the statements below to become a voting member."
      return render :edit
    elsif !current_user.voting_member?
      current_user.update!(voting_policy_agreement: true)
      flash[:message] = "Thank you for volunteering to serve as a voting member! A membership coordinator will be in touch soon."
    end