Question

我有两个模特：面试和受访者

对受访者的采访是多对一的关系。我正在创建一个用于创建新面试的表单，通过该表单我还接受Interviewee的嵌套属性。在受访者模型中还有一个具有唯一约束的字段“电子邮件”。

如果模型中已经存在具有指定“电子邮件”的受访者，那么我只想将采访链接到它。

以下是我的模特：

Interviewee.rb：

class Interviewee < ApplicationRecord
    has_many :interviews, inverse_of: :interviewee

    def self.find_by_email(email)
        where("email = ?", email)
    end
end

Interview.rb：

class Interview < ApplicationRecord
  belongs_to :interviewee, inverse_of: :interviews
  has_many :meetings
  has_many :interviewers, through: :meetings
  accepts_nested_attributes_for :interviewee
  accepts_nested_attributes_for :interviewers
end

面试总监：

class InterviewsController < ApplicationController
    def index
        @interviews = Interview.all
    end

    def new
        @interview = Interview.new(date: Date.current)
        #2.times {@interview.interviewers.build}
        @interview.interviewers.build
        @interview.build_interviewee
    end

    def create
        render plain: interview_params["interviewee_attributes"]["email"].inspect
        @interview = Interview.new(interview_params)
        logger.debug "#{@interview.interviewee.email}"

        # Check if the interviewee already exists
        interviewee = Interviewee.find_by(email:@interview.interviewee.email)

        if interviewee.present?
            logger.debug "Interviewee exists, linking to it"
            @interview.interviewee.id = interviewee.id
        else
            logger.debug "Interviewee does not exist"
        end



        # Check if the interviewers already exists

        # If they, exist, display alert message on frontend
        #begin
        @interview.save
           #redirect_to interviews_url
        # rescue ActiveRecord::RecordNotUnique => ex
        #     logger.error "#{ex}"
        #     flash[:error] = "#{ex}"
        #     redirect_to new_interview_url
        # end
    end

    private
        def interview_params
            params.require(:interview).permit(
                :title, :date, :start_time, :end_time,
                interviewee_attributes: [:id, :email],
                interviewers_attributes: [:id, :email]
            )
        end
end

当我尝试保存其电子邮件已存在于表格中的受访者时，它会给我这个错误：

SQLite3 :: ConstraintException：UNIQUE约束失败：interviewees.id：INSERT INTO“interviewees”（“id”，“email”，“created_at”，“updated_at”）VALUES（？，？，？，？）

不应该只是创建Interview模型而不插入Interviewee模型，因为我传递了http://api.rubyonrails.org/classes/ActiveRecord/NestedAttributes/ClassMethods.html中给出的已存在的id？

问候。

Rails：更新在表单中具有唯一约束的嵌套属性

0 个答案: