如何在simple_fields_for中进行多选

Question

我已经写了以下内容来接受角色，如何让它接受多个值

= f.simple_fields_for :content_roles do |role|
  = role.input :role_id, label: "visible to", as: :select, label: "Role", collection: Role.all, required: true

Answer 1

只需将multiple: true添加到您的角色字段。

像这样：

= role.input :role_id, label: "visible to", as: :select, label: "Role", collection: Role.all, required: true, multiple: true

Answer 2

这是我当前在线项目中的代码。更新缺少的红宝石标签....