ruby-on-rails - 为什么我现在不能编辑嵌套模型？

Question

我收到以下错误：

undefined method `campaign_fax_path' for #<ActionView::Base:0xb6515200>

我的路线定义如下：

map.resources campaigns, :has_many => :faxes

错误发生在这里：

NoMethodError in Faxes#edit

Showing app/views/faxes/_form.html.erb where line #1 raised

我使用一个非常基本的形式：

 <% form_for [@campaign, @fax] do |f| %>
  2   <%= f.error_messages %>
  3   <p>
  4     Campaign:
  5     <%= link_to @campaign.name, campaign_path(@campaign) %>
  6   </p>

当我做一个 rake routes | grep "campaign_fax*" 我得到以下信息：

         campaign_faxes GET    /campaigns/:campaign_id/faxes(.:format)               {:action=>"index", :controller=>"faxes"}
       new_campaign_fax GET    /campaigns/:campaign_id/faxes/new(.:format)           {:action=>"new", :controller=>"faxes"}

Answer 1

我假设您使用的是 rails 2.3.X

在你的 routes.rb 中试试这个

map.resources campaigns do |campaigns|
  campaigns.resources :faxes
end

请参阅：Rails 指南的嵌套路线部分

Answer 2

显示第 1 行出现的 app/views/faxes/_form.html.erb

也许部分有问题。你检查了吗？

map.resources campaigns, :has_many => :faxes **is that correct? I don't think so... maybe is:

map.resources campaign, :has_many => :faxes or

map.resources campaign, :has_many => :faxes

map.resources fax, :has_many => :campaigns