Ruby on rails 如何在“选择”下拉列表中显示选定值_Ruby On Rails_Ruby

Ruby on rails 如何在“选择”下拉列表中显示选定值

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Ruby on rails 如何在“选择”下拉列表中显示选定值,ruby-on-rails,ruby,Ruby On Rails,Ruby,我有一个键值对数组： FEEDBACK_NOTIFICATION = [['Only in reports', 'only_in_reports'],['Immediately', 'immediately']] 在我看来，我尝试过： <%= f.select(:feedback_schedule, FEEDBACK_NOTIFICATION, options ={:prompt => "-Select-"}) %> <%= f.select(:feedback_s

我有一个键值对数组：

FEEDBACK_NOTIFICATION = [['Only in reports', 'only_in_reports'],['Immediately', 'immediately']]

在我看来，我尝试过：

<%= f.select(:feedback_schedule, FEEDBACK_NOTIFICATION, options ={:prompt => "-Select-"}) %>

<%= f.select(:feedback_schedule, options_for_select(FEEDBACK_NOTIFICATION), options ={:prompt => "-Select-"}) %>

<%= f.select(:feedback_schedule, options_for_select(FEEDBACK_NOTIFICATION, selected: feedback_schedule), options ={:prompt => "-Select-"}) %>

“-选择-”}）%>
“-选择-”}）%>
“-选择-”}）%>

即使数据库已经更新，当我返回编辑页面时，这些选项似乎都不会显示所选/更新的值。

“-Select-”}）%>将起作用