app/controllers/phcpress/article/categories_controller.rb
def show
      @article_category = Phcpress::Article::Category.friendly.find(params[:id])
      @versions = Phcpress::CategoryVersions.where(item_id: params[:id], item_type: 'Phcpress::Article::Category')
    end
def show
      @article_category = Phcpress::Article::Category.friendly.find(params[:id])
      @versions = Phcpress::CategoryVersions.where(item_id: params[:id], item_type: 'Phcpress::Article::Category')
    end
Categories Show