ruby-on-rails - 在 rails 中正确显示 @obj#{count}

Question

我如何才能<%= "@obj#{count}" %>在 DOM 中实际显示变量值而不是 @obj0、@obj1 等

我有需要显示的变量@obj0、@obj1、@obj2 等

Answer 1

A couple of ways.

First, the most correct (IMHO) is to put all your vars to an array and index that.

 arr = [@obj0, @obj1, @obj2]

 <%= arr[count] %>

Another option is to use eval. Avoid this (unless you really know what you're doing).

<%= eval("obj#{count}") %>

Answer 2

我不太确定你想要什么，但我想你想要

<%= @obj.count %>