我想产生这个链接：
<a href="/settings" class="button"><span class="magnifier icon"></span>Search</a>
所以据我所知,我必须转换
<%= link_to "Upgrade",:settings,:class => "button" %>
到了一个区块,但当我这样做时：
<%= link_to "Upgrade",:class => "button" do %> <span class="magnifier icon">Search</span> <% end %>
它给了我以下错误：
undefined method `stringify_keys' for :settings:Symbol
但是,当我这样做时：<％= link_to“Upgrade”,：settings,：class => “按钮”％>它完美地运作.
如何将其转换为块？