Question

我想为集合制作一个选择框。我使用方法options_for_select但它只生成<option></option>字段，而不是外部<select></select>。这是我的代码：

<% categories_array = Category.all.map{|category| [category.name, category.id]} %>
<%= options_for_select(categories_array) %>

结果如下：

<option value="5483c910485559047a000000">Programming</option>
<option value="5483c921485559047a010000">Business</option>
<option value="5483c92b485559047a020000">Game Programming</option>

但我期待：

<select id = "categoryId">
  <option value="5483c910485559047a000000">Programming</option>
  <option value="5483c921485559047a010000">Business</option>
  <option value="5483c92b485559047a020000">Game Programming</option>
</select>

此外，我可以在将此表单发布到服务器时获得此值。我怎么能这样做

谢谢:)

Answer 1

您可以在此处查看select和options帮助器的组合方式：

http://guides.rubyonrails.org/form_helpers.html#making-select-boxes-with-ease

如上所述：

<%= select_tag(:city_id, options_for_select(...)) %>

Rails：为表单生成选择框

1 个答案: