rails 找不到嵌套资源

Question

Rails 5. 我有一个接受嵌套资源（接收器）的反馈表。

class Feedback < ApplicationRecord
   belongs_to :receiver, class_name: 'User', foreign_key: :receiver_id
   accepts_nested_attributes_for :receiver
end

class FeedbacksController < ApplicationController
   def create
      begin
        @feedback = Feedback.new feedback_params
      rescue Exception => e
        binding.pry
      end
      ... do other stuff
   end

   def feedback_params
      params.require(:feedback).permit(:message, receiver_attributes: [:id, :email, :handle])
       end
   end
end

= f.fields_for :receiver do |r|
  = f.text_field :id, value: f.object.receiver.id, class: 'hidden'

我的测试在尝试创建反馈

时失败

#<ActiveRecord::RecordNotFound: Couldn't find User with ID=980191240 for Feedback with ID=>

使用 binding.pry，我可以找到具有测试 ID

的用户

User.find 980191240
#<User id: 980191240, email: "wong.amy@example.com", created_at: "2018-03-27 02:50:52", updated_at: "2018-03-27 02:50:52", first_name: "amy", last_name: "wong", handle: "wong">

任何帮助将不胜感激

Answer 1

我认为问题出在视图上使用的变量，在您的 receiver.id 情况下，您应该使用变量 r 而不是 f

= f.fields_for :receiver do |r|
  = r.text_field :id, value: f.object.receiver.id, class: 'hidden'

同时检查在创建反馈时是否传递了正确的参数

希望这能帮助您解决问题。

rails 找不到嵌套资源

rails can't find nested resource

ruby-on-rails

nested-forms