code: def render_meta_tag_content(meta_tag)
          method_name = "render_meta_tag_content_#{meta_tag.name}".to_sym
          send(method_name, meta_tag) if respond_to?(method_name, true)
  
          meta_tag.get_content(self)
        end
docs: Call render_meta_tag_content_description if method exists
   Controller:
    protected
  
     def render_meta_tag_content_description(meta_tag)
        if !params[:page].blank? && params[:page] != '1'
          meta_tag.content += " - page #{params[:page].to_i}"
        end
     end