pgAdmin 中存在 Sequelize 关联，但它在查询期间一直在寻找未知列答案

【问题标题】：Sequelize association exists in pgAdmin but it keeps looking for unknown column during queriespgAdmin 中存在 Sequelize 关联，但它在查询期间一直在寻找未知列
【发布时间】：2019-08-25 05:02:44
【问题描述】：

一段时间以来，我一直在努力让我的关联正常工作。我有一个拍卖模型和一个投标模型，拍卖模型有很多投标。 Auctions 上的外键“BidId”与 Bids 上的“bid_id”相关联。

Auction.js

const Sequelize = require('sequelize');
const sequelize = require('../config/database');

const User = require('./User');
const Status = require('./Status');
const Vehicle = require('./Vehicles')
const Bids = require('./Bids');
const tableName = 'Auctions';
const Auction = sequelize.define('Auctions', {
  auc_id: {
    type: Sequelize.UUID,
    defaultValue: Sequelize.UUIDV4, // generate the UUID automatically
    primaryKey: true,
  },
  features: {
    type: Sequelize.JSONB,
  },
  bid_amount: {
    type:Sequelize.STRING
  },
  BidId: {
    type: Sequelize.INTEGER
  }
});

module.exports = Auction

Bids.js

const Sequelize = require('sequelize');


// const resolver = require('graphql-sequelize');
const sequelize = require('../config/database');
const Auction = require('./Auction');

const tableName = 'bids';
const Bids = sequelize.define('Bids', {
  bid_id: {
    type: Sequelize.INTEGER,
    autoIncrement: true,
    primaryKey: true
  },
  createdAt: {
   type: Sequelize.DATE,
   // defaultValue: Sequelize.NOW
  },
  updatedAt: {
    type: Sequelize.DATE,
    defaultValue: Sequelize.NOW,
  },
  amount: {
    type: Sequelize.INTEGER
  },
  bid_amount: {
    type:Sequelize.STRING
  },
  bid_no: {
    type: Sequelize.UUID,
    defaultValue: Sequelize.UUIDV4,
  },
}, 
{tableName})


Bids.hasOne(Auction, {foreignKey: 'BidId'}) // Bids is the source, Auction is the target
Auction.hasMany(Bids);
module.exports = Bids

当我使用以下查询时： const findBidOnAuction = () => {Auction.findAll( {where:{BidId:1},include:[{model:Bids}]}).then(data => console.log("result", data))} 我收到错误：Unhandled rejection SequelizeDatabaseError: column GSMBids.GSMAuctionAucId does not exist

我不知道 GSMBids.GSMAuctionAucId 应该来自哪里，我假设 Sequelize 在使用关联时默认需要一个具有该名称的列，但这没有意义，因为我定义了专门链接的列。看起来它正在尝试链接auc_id，但我不希望那样。

编辑：如果我切换查询并执行此操作： const findBidOnAuction = () => {Bids.findAll( {where:{bid_id:1},include:[{model:Auction}]}).then(data => console.log("result", data))}

我收到Unhandled rejection SequelizeEagerLoadingError: GSMAuction is not associated to GSMBids!

【问题讨论】：

标签： node.js sequelize.js pgadmin

【解决方案1】：

我怀疑 Sequelize 不知道拍卖中的哪个字段与出价相关联。你可以试试：

Auction.hasMany(Bids,
         {
         sourceKey : "BidId",  // auction
         foreignKey: "bid_id"  // bids
         });

即使错误不再出现，检查生成的 SQL 并确保连接正确！

【讨论】：