ruby-on-rails-3 - 将类添加到 options_from_collection_for_select 中的选项

Question

我想根据选项项向我的 select 标记中的选项元素添加一个类(“has-versions”)。如何添加该类？

 = select_tag 'project_version_id', "<option value='' disabled>-optional select version-</option>".html_safe + options_from_collection_for_select(current_user.current_project.project_versions, :id, :name, @test_case.script.try(:project_version_id))

我需要它是这样的:

<select name="project_version_id" id="project_version_id">
  <option disabled="" value="">-optional select version-</option>
  <option selected="selected" value="19">NOOB SAIBOT</option>
  <option class="has-versions" value="20">PEW PEW</option>
</select>

Answer 1

以下内容可以帮助您入门:2 项改进:

• 使用 :include_blank 作为“起始”值
• 在生成选择选项时传递:class

.

<%= select 
  "new_something", 
  "project_version_id", 
  options_for_select(["Item11", ["Item 2",{:class=>'has-versions'}]]),
  {:include_blank => '-optional select version-'} %>

提示:您可以根据需要对数组使用collect 来生成options_for_select。