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: categorizations_controller.rb
    path of file: ./repos/workarea/admin/app/controllers/workarea/admin
    
    the code of the file until where you have to start completion: module Workarea
 
    
      def create
        Catalog::Category.in(id: params[:category_ids]).each do |category|
          category.add_product(@product.id)
        end

        flash[:success] = t('workarea.admin.categorizations.flash_messages.added')
        redirect_to catalog_product_categorizations_path(@product)
      end