ruby-on-rails – Rails：在View中检查has_many

class Bunny < ActiveRecord::Base
  has_many :carrots
end

…如果@bunny有胡萝卜,我如何查看View？我想做这样的事情：

<% if @bunny.carrots? %>
  <strong>Yay! Carrots!</strong>
  <% for carrot in @bunny.carrots %>
    You got a <%=h carrot.color %> carrot!<br />
  <% end %>
<% end %>

我知道@ bunny.carrots？不起作用 – 会怎么样？

<% if @bunny.carrots.any? %>
  <strong>Yay! Carrots!</strong>
  <% for carrot in @bunny.carrots %>
    You got a <%=h carrot.color %> carrot!<br />
  <% end %>
<% end %>