css - rails : Can't add CSS class from variable in link_to

Question

语法错误发生在:

<% @list1.each do |list| %>
  <div class="well well-sm">
    <%= list.test_name %> <%= link_to 'Do It', '#', class: <%= list.test_type %>
  </div>
<% end %>
  

也试过 class: <%= #{list}.test_type %>等等……这是怎么回事？

Answer 1

您有多余的 erb 打开标签 <%= ，而是:

<%= list.test_name %> <%= link_to 'Do It', '#', class: <%= list.test_type %>
^^^open          close^^  ^^open                                     ^^^open       close^^

使用:

<%= list.test_name %> <%= link_to 'Do It', '#', class: list.test_type %>

我建议你阅读 An Introduction to ERB Templating