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未显示在视图中。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

您是否在控制器中构建showing对象？

@company.build_showing

如果您在accepts_nested_attributes_for模型上定义了Company，那么您需要在控制器和父对象中设置嵌套对象。