ruby-on-rails - 使用数据库值（rails）重新填充下拉菜单

Question

当转到表单的编辑视图时，将值先前发布到数据库中，除下拉菜单字段外，所有字段都将重新填充。例如，“惊讶”值现在在数据库中。当我打开编辑页面时，我只看到默认的“选择选项...”

这是我的表格中的内容：

<%= f.select :emotion, options_for_select([["Happy", "Happy"], ["Afraid", "Afraid"], ["Sad", "Sad"], ["Surprised", "Surprised"], ["Inspired", "Inspired"]]), :include_blank => 'Select Option...' %>

如何让它重新填充？

Answer 1

利用：

options_for_select([["Happy", "Happy"], ["Afraid", "Afraid"], ["Sad", "Sad"], ["Surprised", "Surprised"], ["Inspired", "Inspired"]], <selected_value>)

Answer 2

刚刚想通了！将 :include_blank 的值更改为数据库中的实际变量。

<%= f.select :emotion, ([["Happy", "Happy"], ["Afraid", "Afraid"], ["Sad", "Sad"], ["Surprised", "Surprised"], ["Inspired", "Inspired"]]), :include_blank => @table_name.emotion %>