在Sequelize中包含findOne查询中的模型会返回错误

Question

我正在尝试使用Sequelize作为ORM从数据库获取其ID。我在belongsTo协会中设置了模型。所以1个场地可以有1个电话号码和1个地址。我确实阅读了他们网站上的Sequelize文档，但没有找到解决此问题的方法。下面我向您提供了查询，错误消息以及模型相互连接的方式。

这是查询：

function findById(id) {
  return this.findOne({
    where: { id: id },
    include: [
      {
        model: models.Address,
        as: "venue_address"
      },
      {
        model: models.PhoneNumber,
        as: "phone_number"
      }
    ]
  }).then((venue) => {
    if (!venue) {
      return utils.createError(404, `Venue with id ${id} does not exist`);
    }
    return venue;
  });
}

Sequelize返回以下错误：

TypeError: Cannot read property 'getTableName' of undefined
    at Function._validateIncludedElement (/Users/kevin/Tabbs/API-Mysql/node_modules/sequelize/lib/model.js:465:30)
    at options.include.options.include.map.include (/Users/kevin/Tabbs/API-Mysql/node_modules/sequelize/lib/model.js:395:37)
    at Array.map (<anonymous>)
    at Function._validateIncludedElements (/Users/kevin/Tabbs/API-Mysql/node_modules/sequelize/lib/model.js:390:39)
    at Promise.try.then.then (/Users/kevin/Tabbs/API-Mysql/node_modules/sequelize/lib/model.js:1576:14)
    at tryCatcher (/Users/kevin/Tabbs/API-Mysql/node_modules/bluebird/js/release/util.js:16:23)
    at Promise._settlePromiseFromHandler (/Users/kevin/Tabbs/API-Mysql/node_modules/bluebird/js/release/promise.js:512:31)
    at Promise._settlePromise (/Users/kevin/Tabbs/API-Mysql/node_modules/bluebird/js/release/promise.js:569:18)
    at Promise._settlePromise0 (/Users/kevin/Tabbs/API-Mysql/node_modules/bluebird/js/release/promise.js:614:10)
    at Promise._settlePromises (/Users/kevin/Tabbs/API-Mysql/node_modules/bluebird/js/release/promise.js:693:18)
    at Async._drainQueue (/Users/kevin/Tabbs/API-Mysql/node_modules/bluebird/js/release/async.js:133:16)
    at Async._drainQueues (/Users/kevin/Tabbs/API-Mysql/node_modules/bluebird/js/release/async.js:143:10)
    at Immediate.Async.drainQueues [as _onImmediate] (/Users/kevin/Tabbs/API-Mysql/node_modules/bluebird/js/release/async.js:17:14)
    at runCallback (timers.js:756:18)
    at tryOnImmediate (timers.js:717:5)
    at processImmediate [as _immediateCallback] (timers.js:697:5)
Unhandled rejection Error: Transaction cannot be rolled back because it has been finished with state: commit
    at Transaction.rollback (/Users/kevin/Tabbs/API-Mysql/node_modules/sequelize/lib/transaction.js:85:35)
    at models.Address.createAddress.then.catch (/Users/kevin/Tabbs/API-Mysql/server/routes/venue.js:57:13)
    at tryCatcher (/Users/kevin/Tabbs/API-Mysql/node_modules/bluebird/js/release/util.js:16:23)
    at Promise._settlePromiseFromHandler (/Users/kevin/Tabbs/API-Mysql/node_modules/bluebird/js/release/promise.js:512:31)
    at Promise._settlePromise (/Users/kevin/Tabbs/API-Mysql/node_modules/bluebird/js/release/promise.js:569:18)
    at Promise._settlePromise0 (/Users/kevin/Tabbs/API-Mysql/node_modules/bluebird/js/release/promise.js:614:10)
    at Promise._settlePromises (/Users/kevin/Tabbs/API-Mysql/node_modules/bluebird/js/release/promise.js:689:18)
    at Async._drainQueue (/Users/kevin/Tabbs/API-Mysql/node_modules/bluebird/js/release/async.js:133:16)
    at Async._drainQueues (/Users/kevin/Tabbs/API-Mysql/node_modules/bluebird/js/release/async.js:143:10)
    at Immediate.Async.drainQueues [as _onImmediate] (/Users/kevin/Tabbs/API-Mysql/node_modules/bluebird/js/release/async.js:17:14)
    at runCallback (timers.js:756:18)
    at tryOnImmediate (timers.js:717:5)
    at processImmediate [as _immediateCallback] (timers.js:697:5)

模型如下关联：

models.Venue.belongsTo(models.PhoneNumber, {
      as: "phone_number",
      onDelete: "CASCADE",
      foreignKey: { allowNull: false }
    });
    models.Venue.belongsTo(models.Address, {
      as: "venue_address",
      onDelete: "CASCADE",
      foreignKey: { allowNull: false }
    });

当我不包含任何内容时，这就是我收到的内容：

感谢解决此问题的所有帮助！

Answer 1

我认为您的表格正在按顺序初始化。如果你在这里看到我的例子：Example Index File你会注意到我有一个特定顺序的模型数组，我循环来初始化表。我认为你有一个外键依赖，在创建关联之前没有被初始化，这就是你看到这个错误的原因。

简短回答：您需要确保在依赖关系之前初始化外键依赖关系。