Ruby on Rails：对象数组括号中的循环和索引

Question

为什么循环中的索引（在对象数组括号中）不能正常工作？

<% (1..7).each do |i| %>
  <%= select_tag 'hour[day][#{i}]', options_for_select(days_hours) %>
<% end %>

此循环中#{i}不应该变为1,2,3 ...... ....

<%= select_tag 'hour[day][1]', options_for_select(days_hours) %>
<%= select_tag 'hour[day][2]', options_for_select(days_hours) %>
<%= select_tag 'hour[day][3]', options_for_select(days_hours) %>
...
<%= select_tag 'hour[day][7]', options_for_select(days_hours) %>

当我检查我的HTML时，它只会保留#{i}。

Answer 1

尝试使用" "（双引号）代替' '（单引号）

<% (1..7).each do |i| %>
  <%= select_tag "hour[day][#{i}]", options_for_select(days_hours) %>
<% end %>