有没有一种建议的方法可以在 RoR 中创建嵌套的多对多实体，以避免嵌套资源的 JSON 字段中的 *_attributes？

问：

我已经设法通过使用 for JSON 和下面的项目创建了嵌套的多对多实体。accepts_nested_attributes_for

我的问题是 - 有没有一种建议的方法可以实现同样的事情，我不必添加就可以在 RoR 服务器上创建对象数组？我所说的建议要么是框架本身所建议的，要么是尽可能干净的东西。_attributesemotion

JSON 被发布到 http://localhost:3000/periods：

{
    "period": {
        "date": "2022-03-17T03:00:52.820Z",
        "period": "morning",
        "emotions_attributes": [
            {
                "name": "ok"
            },
            {
                "name": "fine"
            }
        ]
    }
}

rails generate用于创建后续文件的命令：

rails g model Emotion name:string
rails g scaffold Period date:date period:string --skip-template-engine
rails g scaffold Entry emotion:references period:references --skip-template-engine

句点.rb：

class Period < ApplicationRecord
  has_many :entries
  has_many :emotions, through: :entries

  accepts_nested_attributes_for :emotions
end

情感.rb

class Emotion < ApplicationRecord
  has_many :entries
  has_many :periods, through: :entries
end

条目.rb

class Entry < ApplicationRecord
  belongs_to :emotion
  belongs_to :period
end

periods_controller.rb

class PeriodsController < ApplicationController
  before_action :set_period, only: %i[ show edit update destroy ]
  skip_before_action :verify_authenticity_token

  ...

  def create
    @period = Period.new(period_params)

    respond_to do |format|
      if @period.save
        format.html { redirect_to period_url(@period), notice: "Period was successfully created." }
        format.json { render :show, status: :created, location: @period }
      else
        format.html { render :new, status: :unprocessable_entity }
        format.json { render json: @period.errors, status: :unprocessable_entity }
      end
    end
  end
  
  ...

    # FYI turns out the id is key here to be able to even perform create 
    def period_params
      params.require(:period).permit(
        :date, 
        :period,
        emotions_attributes: [:id, :name]
      )
    end

路由.rb

Rails.application.routes.draw do
  resources :entries
  resources :periods

我希望能够发布的是：

{
    "period": {
        "date": "2022-03-17T03:00:52.820Z",
        "period": "morning",
        "emotions": [
            {
                "name": "ok"
            },
            {
                "name": "fine"
            }
        ]
    }
}