gistfile1.rb

item.categories.each do |rss_category|
            
            rss_category.strip.split(',').each do |rss_category_split|
            
            if rss_category_split
              # Create the new category is necessary
              category = Category.find_by_name(rss_category_split.strip)
              if !category
                  
                # Try to find a merge category before creating a new category.x
                categoryMerge = CategoryMerge.find_by_merge_src(rss_category_split.strip)
                if categoryMerge
                  category = Category.find_by_id(categoryMerge.merge_target)
                end
                  
                if !category
                  category = Category.new
                  category.name = rss_category_split.strip
                end
              end
            
              new_feed_item.categories << category
            end
          end
        end #each_with_index