def get_date_name_by_number(str)
      case str
      when  1 then I18n.t("helpers.view_helper.get_date_name_by_number.date_1")
      when  2 then I18n.t("helpers.view_helper.get_date_name_by_number.date_2")
      when  3 then I18n.t("helpers.view_helper.get_date_name_by_number.date_3")
      when  4 then I18n.t("helpers.view_helper.get_date_name_by_number.date_4")
      when  5 then I18n.t("helpers.view_helper.get_date_name_by_number.date_5")
      when  6 then I18n.t("helpers.view_helper.get_date_name_by_number.date_6")
      when  7 then I18n.t("helpers.view_helper.get_date_name_by_number.date_7")
      when  8 then I18n.t("helpers.view_helper.get_date_name_by_number.date_8")
      when  9 then I18n.t("helpers.view_helper.get_date_name_by_number.date_9")
      when 10 then I18n.t("helpers.view_helper.get_date_name_by_number.date_10")
      when 11 then I18n.t("helpers.view_helper.get_date_name_by_number.date_11")
      when 12 then I18n.t("helpers.view_helper.get_date_name_by_number.date_12")
      end
    end
def get_date_name_by_number(str)
      case str
      when  1 then I18n.t("helpers.view_helper.get_date_name_by_number.date_1")
      when  2 then I18n.t("helpers.view_helper.get_date_name_by_number.date_2")
      when  3 then I18n.t("helpers.view_helper.get_date_name_by_number.date_3")
      when  4 then I18n.t("helpers.view_helper.get_date_name_by_number.date_4")
      when  5 then I18n.t("helpers.view_helper.get_date_name_by_number.date_5")
      when  6 then I18n.t("helpers.view_helper.get_date_name_by_number.date_6")
      when  7 then I18n.t("helpers.view_helper.get_date_name_by_number.date_7")
      when  8 then I18n.t("helpers.view_helper.get_date_name_by_number.date_8")
      when  9 then I18n.t("helpers.view_helper.get_date_name_by_number.date_9")
      when 10 then I18n.t("helpers.view_helper.get_date_name_by_number.date_10")
      when 11 then I18n.t("helpers.view_helper.get_date_name_by_number.date_11")
      when 12 then I18n.t("helpers.view_helper.get_date_name_by_number.date_12")
      end
    end
Returns a sub string of the month name
 Params:
 +str+:: integer of the month