Node.js 7 如何使用异步/等待的续集事务? [英] Node.js 7 how to use sequelize transaction with async / await?

问题描述

Node.js 7 及更高版本已经支持 async/await 语法.我应该如何将 async/await 与 sequelize transactions 一起使用?

Node.js 7 and up already support async/await syntax. How should I use async/await with sequelize transactions?

推荐答案

let transaction;    

try {
  // get transaction
  transaction = await sequelize.transaction();

  // step 1
  await Model.destroy({ where: {id}, transaction });

  // step 2
  await Model.create({}, { transaction });

  // step 3
  await Model.update({}, { where: { id }, transaction });

  // commit
  await transaction.commit();

} catch (err) {
  // Rollback transaction only if the transaction object is defined
  if (transaction) await transaction.rollback();
}

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