Question

rails 3.2 Ruby 2.1.5

我正在尝试为故障单创建一个表单，其中包含许多部分。

其中一个sectios称为customer_info

在app / views / tickets / show.html.slim中，我有：

= render 'tickets/sections/customer_info', locals: { customer_info: CustomerInfo.new, ticket: @ticket }

在我的app / views / tickets / sections / _customer_info.html.slim中，我有：

= form_for customer_info do |f|
  - f.hidden_field :ticket_id, :value => ticket.id
  .form-horizontal-column.customer-info
    .form-group
      = f.label :pre_tax_total
      = f.text_field :pre_tax_total, maxlength: 50
    .form-group
      = f.label :post_tax_total
      = f.text_field :post_tax_total, maxlength: 50
   .actions = f.submit 'Save'
  .clear

当应用尝试呈现customer_info表单时，我收到以下错误消息：

undefined method `model_name' for NilClass:Class

当它到达表格中的第一行时：

= form_for customer_info do |f|

知道怎么做吗？

Answer 1

尝试从

更改渲染代码

= render 'tickets/sections/customer_info', locals: { customer_info: CustomerInfo.new, ticket: @ticket }

到

= render partial: 'tickets/sections/customer_info', locals: { customer_info: CustomerInfo.new, ticket: @ticket }

如果使用partial，请务必添加locals。

Answer 2

使用类似的东西

= render 'tickets/sections/customer_info', locals: { ticket: @ticket }

和

= form_for CustomerInfo.new do |f|
  - f.hidden_field :ticket_id, :value => ticket.id
  .form-horizontal-column.customer-info
    .form-group
      = f.label :pre_tax_total
      = f.text_field :pre_tax_total, maxlength: 50
    .form-group
      = f.label :post_tax_total
      = f.text_field :post_tax_total, maxlength: 50
   .actions = f.submit 'Save'
  .clear

渲染部分视图导致错误

2 个答案: