Rails 视图中的 fields_for

Question

当我尝试在下面的视图代码中使用 fields_for 时，company_name 没有显示在视图中。我做错了什么？

= form_for @company do |f|
  -if @company.errors.any?
    #error_explanation
      %h2= "#{pluralize(@company.errors.count, "error")} prohibited this company from being saved:"
      %ul
        - @company.errors.full_messages.each do |msg|
          %li= msg
  =f.fields_for :showing do |t|
    .field
      = t.label :company_name
      = t.text_field :company_name
  .field
    = f.label :geography
    = f.text_area :geography

Answer 1

您是否没有在控制器中构建 showing 对象？

@company.build_showing

如果您已在 Company 模型上定义了 accepts_nested_attributes_for，那么您需要在控制器以及父对象中设置嵌套对象。