Question

我在尝试使用“ accepts_nested_attributes_for”通过父级创建关联的子记录时遇到以下错误：

ActiveRecord :: RecordInvalid（验证失败：调查问题详细信息调查不能为空，调查问题详细信息活动详细信息必须存在）：

想知道我是否缺少用于自动创建子记录的任何内容吗？

示例输入：（以下输入中的前4个键在保存之前合并到params哈希中）

{：organization_id =>“硬编码”，：activity_library_type => 0，：created_by =>“硬编码”，：updated_by =>“硬编码”，“ activity_name” =>“ ss-28”，“描述” => “”，“ content_path_url” =>“”，“ activity_status” => 0，“ activity_type” => 4，“ group” =>“ group”，“ code_level” =>“ code”，“ topic” =>“ topic “，”解决方案“ =>”解决方案“，” survey_question_details_attributes“ => [{” question“ =>” Question1“，” order“ => 1，” question_type“ => 0}]}}

参数：

params.require（：activity_detail）.permit（：activity_name，：description，：content_path_url，：activity_status，：activity_type，：group，：code_level，：topic，：solution，：duration_seconds，：survey_question_details_attributes => [：id，：question，：order，：question_type，：_ destroy]）

下面是控制器和模型（每个活动都包含许多问题）：

class ActivityController < ApplicationController
def create
    # Merged additional_attributes hash to content_params recieved from front end (first 4 keys mentioned above in sample input)
    full_activity_details_record = additional_attributes.merge(content_params)
    response = ActivityDetail.create(full_activity_details_record)
  end
end

class ActivityDetail < ApplicationRecord
  has_many :survey_question_details, dependent: :destroy, foreign_key: :survey_id
  accepts_nested_attributes_for :survey_question_details

  validates :activity_name, :organization_id,
            :activity_library_type, :activity_status, :activity_type,
            :created_by, :updated_by, presence: true
  validates :activity_name, uniqueness: { case_sensitive: false }, length: { maximum: 55 }
  validates :description, length: { maximum: 160 }

end


class SurveyQuestionDetail < ApplicationRecord
  belongs_to :activity_detail, foreign_key: :survey_id

  validates :question, :survey_id, :question_type, :order, presence: true
  default_scope { order(:order) }
end

Answer 1

由于您还没有分享您的观点，所以让我开始讨论。

首先，您已经验证了模型属性的存在状态为true，因此您将特别收到验证错误。

####in SurveyQuestionDetail model
###this is causing the error => Survey question details SURVEY can't be blank
##you must either pass the survey_id as hidden field or comment it out
validates :question, :survey_id, :question_type, :order, presence: true

更多，在您看来，您必须对表单中的嵌套属性使用fields_for

类似

<%= form_with(@activity_detail: show, local: true) do |form| %>
  # Show name and label
  <%= form.fields_for :survey_question_detail do |s| %>
    <%= s.label :number %>
    <%= s.number_field :number %>
    ##can also include hidden fields to add other model...survey_id
  <% end %>
  # Submit Button
<% end %>

希望这会有所帮助。

Answer 2

我认为创建的参数不完整。参数应放在：activity_detail键下

:activity_detail => {
  {
    :organization_id=>"hardcoded", 
    :activity_library_type=>0, 
    :created_by=>"hardcoded", 
    :updated_by=>"hardcoded", 
    "activity_name"=>"s-s-28", 
    "description"=>"", 
    "content_path_url"=>"", 
    "activity_status"=>0, 
    "activity_type"=>4, 
    "group"=>"group", 
    "code_level"=>"code", 
    "topic"=>"topic", 
    "solution"=>"solution", 
    "survey_question_details_attributes"=>[
      {
        "question"=>"Question1", 
        "order"=>1, 
        "question_type"=>0
      }
    ]
  }
}

无法使用“ accepts_nested_attributes_for”创建关联/嵌套的子记录

2 个答案: