Rails Ransack 在多个 select 中包含空白

Rails Ransack include blank in multiple select

我在 Rails 3.2 应用程序中使用 gem Ransack。

以下适用于 select 多个值:

<td><%= f.collection_select :costproject_coststatus_id_in, Coststatus.all, :id, :statuscode, {}, { :multiple => true}

但是,有没有办法包含空格?

我试过这些:

<td><%= f.collection_select :costproject_coststatus_id_in, Coststatus.all, :id, :statuscode, {}, { :multiple => true, :include_blank => true }%></td>

<td><%= f.collection_select :costproject_coststatus_id_in, Coststatus.all, :id, :statuscode, include_blank: true, {}, { :multiple => true }%></td>

感谢帮助!!

好的 - 这有效:

<td><%= f.collection_select :costproject_coststatus_id_in, Coststatus.all, :id, :statuscode, {:include_blank => true}, { :multiple => true }%></td>