使用数据库值重新填充下拉菜单（rails）

Question

当转到表单的“编辑”视图时，如果先前已将值发布到数据库，则会重新填充所有字段，但下拉菜单字段除外。例如，“惊讶”值现在位于数据库中。当我打开编辑页面时，我只看到默认的“选择选项...”

以下是我的表格：

<%= 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

使用：

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

Answer 2

想出来了！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 %>