Rails表单选择：预选一个选项

Question

我有这个rails代码：

 <% status_a = [ ["DRAFT", "DRAFT"], ["OPEN", "OPEN"], ["CLOSE", "CLOSE"] ] %>
 <%= form_for(:dash_action, url: brokers_dashboard_path ) do |f| %>
      <%= f.select(:select_status, options_for_select(status_a), {}, selected:'OPEN' %>
 <% end %>

运行时，会生成以下HTML代码：

<select selected="selected" name="dash_action[select_status]" id="dash_action_select_status">
<option value="DRAFT">DRAFT</option>
<option value="OPEN">OPEN</option>
<option value="CLOSE">CLOSE</option>
...

但我的期望是： 选中=“打开”而非“已选中”

为什么select方法没有做我想要的？

Answer 1

请尝试以下代码段，默认值应为options_for_select

的参数

f.select :select_status, options_for_select(status_a, 'OPEN')