無法在多態關聯上保存嵌套模型

Question

強制要求保存關於多態關聯的嵌套模型的幫助。我失去了一些東西，但無法弄清楚什麼。永恆的相當直接。有地址可以有多個電話。 所以模型

class Address < ActiveRecord::Base  
    has_many :phones, as: :phoneable 
    accepts_nested_attributes_for :phones, allow_destroy: true 
    validates :city, :street, :building, :name, presence: true 
end 

和

class Phone < ActiveRecord::Base 
    belongs_to :phoneable, polymorphic: true 
    validates :number, :extension, presence: true   
end 

addresses_controller.rb

def new 
    @address = Address.new 
    @phone = @address.phones.build 
    authorize @address 
end 

def create 
    @address = Address.create(address_params) 
    authorize @address 
    if @address.save 
    binding.pry 
    flash[:success] = "Address #{@address.name} created" 
    redirect_to address_path(@address) 
    else 
    flash.now[:danger] = 'Failed' 
    render :new 
    end 
end 

def address_params 
    params.require(:address).permit(:name, :street, :building, :city, phones_attributes: [:id, :number, :extension, :details]) 
end 

/app/views/address.html.erb

<div class="row"> 
     <div class="col-md-12"> 
     <%= form_for(@address, html: {class: 'form-horizontal', role: 'form'}) do |f| %> 
      <%= render 'shared/errors', obj: @address, model_name: 'addresses' %> 
      <div id="create-form"> 
      <div class="form-group"> 
       <div class="control-label col-md-4"> 
       <%= f.label :city, 'Город' %> 
       </div> 
       <div class="col-md-4"> 
       <%= f.select(:city, options_for_select(['Moscow', 'Samara']), {}, {class: "form-control"}) %> 
       </div> 
      </div> 

      <div class="form-group"> 
       <div class="control-label col-md-4"> 
       <%= f.label :street, 'Street' %> 
       </div> 
       <div class="col-md-4"> 
       <%= f.text_field :street, class: 'form-control' %> 
       </div> 
      </div> 

      <div class="form-group"> 
       <div class="control-label col-md-4"> 
       <%= f.label :building, 'Building' %> 
       </div> 
       <div class="col-md-4"> 
       <%= f.text_field :building, class: 'form-control' %> 
       </div> 
      </div> 

      <div class="form-group"> 
       <div class="control-label col-md-4"> 
       <%= f.label :name, 'Place name' %> 
       </div> 
       <div class="col-md-4"> 
       <%= f.text_field :name, class: 'form-control' %> 
       </div> 
      </div> 

      <div class="form-group"> 
       <div class="control-label col-md-4"> 
       <%= f.label :phones, 'Phone' %> 
       </div> 
       <div class="col-md-4"> 
       <%= f.fields_for :phone do |phone_form| %> 
        <%= phone_form.text_field :number, class: 'form-control' %> 
       </div> 
      </div> 

      <div class="form-group"> 
       <div class="control-label col-md-4"> 
       <%= phone_form.label :extension, 'Ext.' %> 
       </div> 
       <div class="col-md-4"> 
       <%= phone_form.text_field :extension, class: 'form-control' %> 
       </div> 
       <% end %> 
      </div> 

      <div class="form-group"> 
       <div class='col-md-offset-4 col-md-6'> 
       <%= f.submit @address.new_record? ? 'Add' : 'Update', class: 'btn btn-primary btn-md' %> 
       </div> 
      </div> 
      </div> 
     <% end %> 
     </div> 
    </div> 

我遇到的第一個問題是，如果我將:phones代替:phone代入下列行<%= f.fields_for :phone do |phone_form| %>我的電話文本字段不會在視圖中呈現，但它們應該。一位用戶在這裏強調這一刻https://stackoverflow.com/a/3328041/2049476 如果我使用:phone一切以某種方式正常工作，但似乎是錯誤的。 而第二個。 電話對象不會保存在數據庫中，當我創建新地址或編輯當前電話時，如果我將所有字段留空，電話不會顯示任何驗證錯誤。 在這裏我有params哈希

{"utf8"=>"✓", "authenticity_token"=>"inwXr3Ev/Aj/hZRY2IadizDHDgdSFo2zFhY9DAvysfFu3jjD9AS66esKVsTzEuKo2WC46YQt6HnOKTgInvfUEg==", "address"=>{"city"=>"Moscow", "street"=>"ul. Tsentralnaya d. 4 kv. 220", "building"=>"1212", "name"=>"Astoria", "phone"=>{"number"=>"9215555555", "extension"=>"111"}}, "commit"=>"Add", "controller"=>"addresses", "action"=>"create"}

我缺少什麼？ 2個問題

Answer 1

嘗試回答：

1. 正確的方法是通過:phones，然後phone作爲變量field_for，喜歡的是做here：

   <%- @address.phones.each.with_index do |phone, index| %> 
       <%- f.fields_for :phones, phone do |phone_form| %> 
   
       <%- end %> 
   <%- end %> 
   

2. 應該可以解決從第1個問題開始，由於字段shoudl通過params而不是phone散列發送ot服務器，但是phones_attributes散列數組，以便accepts_nested_attributes_for可以接受電話：

   phones_attributes: [{ ... },{ ... }]