Question

我在使用简单的IF语句时遇到问题。我尝试了几件事并没有成功。

   <% if item.ITEM.strip != 'OEM-LABELS' || item.ITEM.strip != 'DISCOUNT' || item.ITEM.strip != 'OEM-DVR' %>

   <% if item.ITEM.strip != 'OEM-LABELS' or item.ITEM.strip != 'DISCOUNT' or item.ITEM.strip != 'OEM-DVR' %>

Answer 1

如果我是你，我会简化如下

item = "A"
["C","B","A"].include?item #=> true
["C","B","D"].include?item #=> false


if ["C","B","D"].include?item
   do something

或

if !["C","B","D"].include?item  
   do something

Answer 2

嘿，所以很少（不用看你的代码）

为此逻辑

创建一个帮助器

def needs_discounting(item)
  LOGIC HERE
end

然后在你看来

  <% if needs_discounting(item.ITEM) %>
      STUFF
  <% end %>

Ruby IF或Statement无效

2 个答案: