Question

我有两个模型（Bcase和C_entry），我试图在每个Bcase创建表单上获得10个空白c_entry字段！

我所做的是：

型号：

bcase.rb

class Bcase < ActiveRecord::Base
        has_many :c_entries, :dependent => :destroy
    accepts_nested_attributes_for :c_entries        
end

c_entry.rb

class CEntry < ActiveRecord::Base
    belongs_to :bcase
end

bcase_controller.rb

  def new
        @bcase = Bcase.new
        10.times {@bcase.c_entries.build}
  end

def bcase_params
    params.require(:bcase).permit(:pimp_id, :comment_text, :status, c_entries_attributes:[:id, :description, :bcase_id])
end

表格（以bcase呈现 - ＆gt; new.html.erb）

<%= simple_form_for :bcase, url: bcase_path do |f| %>
    <div class="form-inputs">
        <% f.simple_fields_for :c_entries do |entry| %> 
        <%= entry.input :description %>
        <% end %>
    </div>
<% end %>

但是如果我在浏览器中打开localhost上的视图，表单就是空的。我测试了一切，我知道一切都适用于bcase属性，但不适用于嵌套属性。如果我尝试仅初始化1个对象而不是10 @bcase.c_entries.build没有任何更改，仍然会显示嵌套的任何内容。此外，我尝试通过rails控制台创建c_entries，这是有效的。我还使用了Bcase.first.c_entries.build命令。

编辑：好的，问题已经解决但现在我的视图只显示1个条目而不是10条！我做错了什么？

EDIT2：

佣金路线

        Prefix Verb   URI Pattern                       Controller#Action
     protocols GET    /protocols(.:format)              protocols#index
               POST   /protocols(.:format)              protocols#create
  new_protocol GET    /protocols/new(.:format)          protocols#new
 edit_protocol GET    /protocols/:id/edit(.:format)     protocols#edit
      protocol GET    /protocols/:id(.:format)          protocols#show
               PATCH  /protocols/:id(.:format)          protocols#update
               PUT    /protocols/:id(.:format)          protocols#update
               DELETE /protocols/:id(.:format)          protocols#destroy
         pimps GET    /                                 pimps#index
      new_pimp GET    /new(.:format)                    pimps#new
     edit_pimp GET    /:id/edit(.:format)               pimps#edit
          pimp GET    /:id(/.:format)                   pimps#show
               POST   /(.:format)                       pimps#create
               PUT    /:id(.:format)                    pimps#update
               PATCH  /:id(.:format)                    pimps#update
               DELETE /:id(.:format)                    pimps#destroy
   new_mepager GET    /:pimp_id/onepager/new(.:format)  mepagers#new
  edit_mepager GET    /:pimp_id/onepager/edit(.:format) mepagers#edit
       mepager GET    /:pimp_id/onepager(.:format)      mepagers#show
create_mepager POST   /:pimp_id/onepager(.:format)      mepagers#create
               PUT    /:pimp_id/onepager(.:format)      mepagers#update
               PATCH  /:pimp_id/onepager(.:format)      mepagers#update
               DELETE /:pimp_id/onepager(.:format)      mepagers#destroy
     new_bcase GET    /:pimp_id/bcase/new(.:format)     bcases#new
    edit_bcase GET    /:pimp_id/bcase/edit(.:format)    bcases#edit
         bcase GET    /:pimp_id/bcase(.:format)         bcases#show
  create_bcase POST   /:pimp_id/bcase(.:format)         bcases#create
               PUT    /:pimp_id/bcase(.:format)         bcases#update
               PATCH  /:pimp_id/bcase(.:format)         bcases#update
               DELETE /:pimp_id/bcase(.:format)         bcases#destroy

Simple_form_for

<%= simple_form_for bcase_path(@pimp) do |f| %>
  <%= f.error_notification %>

<%= simple_fields_for :c_entries do |ff| %>
<div class="form-actions">
<%= ff.input :description, label: false %>
<% end %>
</div>

<% end %>

bcase_controller.rb

def setall
   @pimp = Pimp.find(params[:pimp_id])
   @bcase = @pimp.bcase
end

simple_form_for

中的@bcase出错

NoMethodError in Bcases#new 
Showing c:/Users/Public/Documents/Sites/improvement/app/views/bcases/_form.html.erb where line #1 raised: 

undefined method `bcases_path' for #<#<Class:0x53efbc0>:0x4d195d0>

EDIT3：

在

之后进行了一些更多的测试和包含

<p><%= "Nr of c-entries = #{@bcase.c_entries.size}" %></p>

是什么让我10支持

<%= @bcase.c_entries.each do |entry| %>
<%= entry.description %>
<% end %>

这显示了10个空条目！所以他们在那里，我不知道怎么看他们！

[#<CEntry id: nil, bcase_id: nil, order_no: 1, description: nil, hours: nil, nrc: nil, created_at: nil, updated_at: nil>, #<CEntry id: nil, bcase_id: nil, order_no: 2, description: nil, hours: nil, nrc: nil, created_at: nil, updated_at: nil>, #<CEntry id: nil, bcase_id: nil, order_no: 3, description: nil, hours: nil, nrc: nil, created_at: nil, updated_at: nil>, #<CEntry id: nil, bcase_id: nil, order_no: 4, description: nil, hours: nil, nrc: nil, created_at: nil, updated_at: nil>, #<CEntry id: nil, bcase_id: nil, order_no: 5, description: nil, hours: nil, nrc: nil, created_at: nil, updated_at: nil>, #<CEntry id: nil, bcase_id: nil, order_no: 6, description: nil, hours: nil, nrc: nil, created_at: nil, updated_at: nil>, #<CEntry id: nil, bcase_id: nil, order_no: 7, description: nil, hours: nil, nrc: nil, created_at: nil, updated_at: nil>, #<CEntry id: nil, bcase_id: nil, order_no: 8, description: nil, hours: nil, nrc: nil, created_at: nil, updated_at: nil>, #<CEntry id: nil, bcase_id: nil, order_no: 9, description: nil, hours: nil, nrc: nil, created_at: nil, updated_at: nil>, #<CEntry id: nil, bcase_id: nil, order_no: 10, description: nil, hours: nil, nrc: nil, created_at: nil, updated_at: nil>]

EDIT4：

现在将bcases_path包含在我的路由中进行调试。现在我的form_for适用于@bcase，但这并没有解决我遇到的问题。

EDIT5：

它以某种方式与

一起使用

<%= @bcase.c_entries.each do |hallo| %>
 <%= f.simple_fields_for :c_entries, hallo do |fff| %>
    <%= fff.input :description %>
 <% end %>
<% end %>

可能导致指定了c_entries。但是这个解决方案看起来并不那么精益！是否可以在bcase控制器中以某种方式指定它？

Answer 1

啊，发现了！您忘记了=中的<%=。因此块将正确执行，但不会添加到表单中。

所以写

<%= simple_form_for @bcase do |f| %>
  <div class="form-inputs">
    <%= f.simple_fields_for :c_entries do |entry| %> 
      <%= entry.input :description %>
    <% end %>
  </div>

嵌套表单不起作用

1 个答案: