如何在rails中更改选择表单助手的html？

Question

当我使用select_tag帮助程序时，所有内容都完美地用于：

<%= select_tag :district_id, options_from_collection_for_select(districts, "id", "title", prompt: "All"), { class: "select", id: "district" } %>

但我无法处理选择助手。尝试改变这些方式：

1）<%= form.select :district_id, options_from_collection_for_select(districts, "id", "title", prompt: "All"), html_options: { class: "select_inside_col", id: "locality" } %>

2）<%= form.select :district_id, options_from_collection_for_select(districts, "id", "title", prompt: "All"), html: { class: "select_inside_col", id: "locality" } %>

3）<%= form.select :district_id, options_from_collection_for_select(districts, "id", "title", prompt: "All"), class: "select_inside_col", id: "locality" %>

结果始终相同 - 它忽略了html选项（<select name="district_id" id="district_id">），但是，options_from_collection_for_select工作正常。 有什么诀窍？

Answer 1

根据文档here尝试此操作：

<%= form.select :district_id, districts.map { |d| [d.title, d.id] }, { include_blank: "All" }, { class: "select_inside_col", id: "locality" } %>

注意，它直接将区域集合作为第二个参数（不包含在options_from_collection_for_select中）。