如何在Rails中使用form_for中的select方法

Question

我想在Rails中使用form_for中的select方法.我不太清楚该怎么做.谁能指点我一个例子？

Answer 1

你在谈论select或select_tag或collection_select？

# advanced users only
= f.select :field_id, options_for_select(Model.collect{|m| [m.name, m.id]})

# easiest, assuming you have a model
= f.collection_select :field_id, Model.all, :id, :name

# without model
= select_tag 'model[field_id]', @model.field_id, options_for_select(Model.collect{|m| [m.name, m.id]})