def get_keyword_from_url
      if request.env["REQUEST_PATH"]
        req_url = request.env["REQUEST_PATH"].split("/")
        keyword_names = Keyword.all.map(&:name)
        keyword = req_url & keyword_names
      end
    end
def get_keyword_from_url
      if request.env["REQUEST_PATH"]
        req_url = request.env["REQUEST_PATH"].split("/")
        keyword_names = Keyword.all.map(&:name)
        keyword = req_url & keyword_names
      end
    end
grab the keyword form request url