活动记录-用户id-rails 4

Question

我是rails的新手，如果有任何帮助，我们将不胜感激。我有模特用户和广告。用户有许多广告，广告属于用户。

问题：当用户创建广告时，我希望创建的广告自动链接到创建广告的当前用户。我不确定如何进行

我知道如何在控制台中为用户分配广告

advert = Advert.first
advert.userr_id = 3
advert.save

但我不确定如何在我的控制器中实现这一点。任何方向建议都将不胜感激

模式

ActiveRecord::Schema.define(version: 20150330233948) do
  create_table "adverts", force: true do |t|
    t.string   "title"
    t.text     "content"
    t.integer  "category_jobtype_id"
    t.integer  "category_positiontype_id"
    t.integer  "salarystart"
    t.integer  "salaryend"
    t.integer  "category_country_id"
    t.string   "city"
    t.string   "town"
    t.string   "postcode"
    t.integer  "category_editorialapproval_id"
    t.integer  "category_applicationrequest_id"
    t.datetime "created_at"
    t.datetime "updated_at"
    t.integer  "userr_id"
  end
  create_table "userrs", force: true do |t|
    t.string   "email",                    default: "", null: false
    t.string   "encrypted_password",       default: "", null: false
    t.string   "reset_password_token"
    t.datetime "reset_password_sent_at"
    t.datetime "remember_created_at"
    t.integer  "sign_in_count",            default: 0,  null: false
    t.datetime "current_sign_in_at"
    t.datetime "last_sign_in_at"
    t.string   "current_sign_in_ip"
    t.string   "last_sign_in_ip"
    t.datetime "created_at"
    t.datetime "updated_at"
    t.string   "firstname"
    t.string   "lastname"
    t.string   "companyname"
    t.integer  "category_businesstype_id"
  end
  add_index "userrs", ["email"], name: "index_userrs_on_email", unique: true
  add_index "userrs", ["reset_password_token"], name: "index_userrs_on_reset_password_token", unique: true
end

型号

class Advert < ActiveRecord::Base
  belongs_to :user
end
class Userr < ActiveRecord::Base
  has_many :adverts
end

控制器：广告

class AdvertsController < ApplicationController
  respond_to :html, :xml, :json
  before_action :set_advert, only: [:show, :edit, :update, :destroy]
  def index
    @adverts = Advert.all
    respond_with(@adverts)
  end
  def show
    respond_with(@advert)
  end
  def new
    @advert = Advert.new
    respond_with(@advert)
  end
  def edit
  end
  def create
    @advert = Advert.new(advert_params)
    @advert.save
    respond_with(@advert)
  end
  def update
    @advert.update(advert_params)
    respond_with(@advert)
  end
  def destroy
    @advert.destroy
    respond_with(@advert)
  end
  private
    def set_advert
      @advert = Advert.find(params[:id])
    end
    def advert_params
      params.require(:advert).permit(:title, :content, :category_jobtype_id, :category_positiontype_id, :salarystart, :salaryend, :category_country_id, :city, :town, :postcode, :category_editorialapproval_id, :category_applicationrequest_id)
    end
end

控制器：用户

任何帮助都将不胜感激。推荐一本书或一本教程会很有帮助。。。。非常感谢

Answer 1

一旦您可以访问用户对象，基本上您就可以执行以下操作：

def create
  @advert = Advert.create(advert_params)
  user.adverts << @advert
  respond_with(@advert)
end

当您使用has_many方法时，模型会"免费"接收一些方法。<<()方法只是其中之一。您可以在这里找到许多关于关联和这些自动生成的方法的信息。