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我可以在state_select中传递什么选项。我正在尝试执行:selected =>状态并且它不工作。如何在Rails中预先选择状态卡门state_select
<%= f.state_select :state, 'US', {:prompt => '--Select One--', :selected => state}, :tabindex => autotab, :id => 'state_select, :state => state'%>