我可以在 select_tag 中包含空白字段吗? [英] Can I include blank field in select_tag?

问题描述

是否可以添加类似 :include_blank => 的选项?在方法 select_tag 中的请选择" 就像 select 方法一样?它似乎不起作用.select_tag 方法有什么替代方法吗?

Is it possible to add an option like :include_blank => 'Please Select' in a method select_tag like it is possible with the select method? It seems not to work. Is there any substitute for this for select_tag method?

推荐答案

在 Rails 3 中，select_tag 有一个 :prompt 选项:

In Rails 3 there is a :prompt option for select_tag:

select_tag "things", many_thing_as_options, :prompt => "Please select"

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