Rails - SimpleForm 中默认选中的单选按钮:collection

问题描述

我对 SimpleForm 中的单选按钮有一些小问题.

I've litte problem with radiobuttons in SimpleForm.

当我使用

= f.association :manufactureType, :collection => ManufactureType.all, :as => :radio

Rails 只生成很少的单选按钮，但没有一个被选中.我希望默认选择第一个单选按钮.我该怎么做?

Rails simply generates few radiobuttons, but none of them are selected.I want first radiobutton to be selected by default. How can i make it?

谢谢

推荐答案

如果您将制造类型传入视图，您可以执行以下操作:

If you pass in the manufacture types into the view, you can do the following:

:checked => @manufacture_types[0]

或

:checked => ManufactureType.first

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