我有以下作为我的 f 选择
如何修改以显示数据库中的内容？
<%= f.select :phase_names, options_for_select([["Select One", "", @phase_names_string_value], "RFP Stage", "Pre Contract", "Awarded", "Unsuccessful", "Completed"]), :class => 'inputboxes' %>
阶段名称来自数据库中的第二个表。但是，每个项目一次只能处于一个阶段。
提前致谢
options_for_select(container, selected = nil)
容器是 display\value 组合，所以你需要[[value,name],[value,name]]或者如果它相同[name]
喜欢["RFP Stage", "Pre Contract", "Awarded", "Unsuccessful", "Completed"]
现在您有了容器，您需要一些东西来匹配所选值
@current_value = MyModel.find(1).vari # Assume MyModel table with id has col vari=Completed
然后，你可以做
select_tag "select_name", options_for_select(["RFP Stage", "Pre Contract", "Awarded", "Unsuccessful", "Completed"].insert(0, "Select One"), @current_value)
另一种方法是拥有一个对象集合，其中包含选项，让我们说:name（显示）和:value（用作值）其中 selected 有:phase_names = :value
f.collection_select :phase_names, [:name => "rStage", :value => "Pre Contract"] , :value, :name, {:include_blank => 'Select one'}
就像 activerecord 类一样工作