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: reordering_concern.rb
    path of file: ./repos/coursemology2/app/controllers/concerns/course/survey
    
    the code of the file until where you have to start completion: # frozen_string_literal: true
module Course::Survey::ReorderingConcern
  ex
    
  def reorder_sections
    if valid_section_ordering?(ordered_section_ids)
      update_sections_ordering(ordered_section_ids)
      render_survey_with_questions_json
    else
      head :bad_request
    end