Rails accept_nested_attributes>構建在驗證失敗時丟失

Question

當使用accepts_nested_attributes保存到location模型並保存到location模型時，Rails將在之前保存值時返回表單空白。

class Sale < ActiveRecord::Base 
    belongs_to :location 
    belongs_to :user 
end 

class Location < ActiveRecord::Base 
    belongs_to :user 
    has_many :sales 
    validates_presence_of :street_address, :town, :state, :zip 
end 

class User < ActiveRecord::Base 
    has_many :sales 
    has_many :locations 
end 

如果沒有驗證錯誤發生時，它會創建位置精絕，然而，當發生驗證錯誤的表單中的任何部分，似乎位置字段的數據丟失。

任何想法？

控制器代碼

def new 
    user = User.find(current_user.id) 
    1.times { @sale.items.build; @sale.build_location; @sale.sale_times.build; } 
    end 

    def create 
    @sale = Sale.new(params[:sale]) 
    respond_to do |format| 
     if @sale.save 
     format.html { redirect_to @sale, notice: 'Sale was successfully created.' } 
     format.json { render json: @sale, status: :created, location: @sale } 
     else 
     format.html { 
      1.times { @sale.items.build; @sale.build_location; } 
      render action: "new" 
      } 
     format.json { render json: @sale.errors, status: :unprocessable_entity } 
     end 
    end 
    end 

Answer 1

這是一個在這裏一個類似的問題：rails fields_for does not render after validation error on nested form

看的第一個答案，這應該有助於