Ruby:如何根据可变数量在Active Admin面板中复数/单个化单词(Active Admin,rails 3.2,ruby)

Question

我是Ruby on Rails的新手,我不能根据它的数量改变一个单词的结尾.

在下面的代码顶部附近,你会看到我写的

h3 "The deal has #{deal.prizes.where(:prize_type => u).count} #{u}

这里的"u"取一个名为PRIZE_TYPE的数组中的值之一.我怎么能这样做

• 如果count = 1,则显示"该交易有1个累积奖金"

• 如果count = 4,则显示"该交易有4个累积奖金

注意:计数不能是= 0或<0

这是我的代码:

panel "Details of Prizes" do

      PRIZE_TYPES.each do |u|

        table_for deal.prizes.where(:prize_type => u) do |t|
          h3 "The deal has #{deal.prizes.where(:prize_type => u).count} #{u}s
          initially set in the campaign for a total value of #{custom_number_to_currency (deal.category_prizes_total_initial_value(u)) }", class: 'title-within-table'
          if deal.prizes.where(:prize_type => u).count > 0 # if there is at least one record of 'jackpot prize'
            t.column("Prize")             { |prize| link_to( image_tag( prize.prize_image_url, class: 'main_img_in_admin_interface' ), admin_prize_path(prize), target: :blank ) }
            t.column("Name")              { |prize| link_to prize.prize_name, admin_prize_path(prize), target: :blank }
            t.column("Category")          { |prize| prize.prize_category }
            t.column("Initial quantity")  { |prize| prize.prize_initial_stock_quantity }

      end # end of Prize.each...

    end # end of panel "details of prizes"

和PRIZE_TYPE常量:

PRIZE_TYPES = ["Jackpot prize","Consolation prize", "awesome prize"]

Answer 1

你可以使用ruby的复数:

prize_type.pluralize(count)
"Jackpot prize".pluralize(1)
#> Jackpot prize
"Jackpot prize".pluralize(2)
#> Jackpot prizes

或者ActiveSupport :: Inflector.pluralize如果你想自己做检查:

prize_type.pluralize
"Jackpot prize".pluralize
#> "Jackpot Prizes"

或者rails具有使用组合Inflector和一些基本逻辑的复数:

pluralize(count, prize_type)
pluralize(1, prize_type)
#> 1 Jackpot prize
pluralize(2, prize_type)
#> 2 Jackpot prizes