提交的 Sequelize 事务的结果是 "undefined"

Question

我正在使用 returns 成功的 Sequelize 事务，但是，结果未定义。如文档中所述：

.then(function (result) {
  // Transaction has been committed
  // result is whatever the result of the promise chain returned to the transaction callback

结果应该包含内容！

我的代码成功运行并更新了数据库，并进入了 .then 块，但结果记录为 "undefined"。

return sequelize.transaction(t => {
        return createUser(body, {transaction: t})
        .then(user => {
            if (user != null) {
                return createSetup({"user_id" : user.dataValues.id}, {transaction: t})
                .then(setup => {
                    console.log("setup was created")
                })
                .catch(err => {
                    throw new Error("the setup key was not created successfully... reverting transaction 2")
                })
            }
            else {
                throw new Error("no return value from creating user");
            }
        })
        .catch(err => {
            throw new Error("Failed to create user")
        })
    })
    .then(result => {
        console.log(result) //this returns undefined
        res.status(200).send({
            success: true,
            message: "The user was successfully created.",
        })
    })
    .catch(error => {
        console.log("error")
        res.status(400).send({
            success: false,
            message: error
        })
    })
})

我真的想要 user 对象的结果，但无论我做什么，它仍然是未定义的。我在交易中的后续功能上尝试了 returns 和 returns。

Answer 1

试试这个

.then(setup => {
                    return { user, setup }
                })

Answer 2

我假设

return createUser(body, {transaction: t})

将是“承诺链的结果 returned 到事务回调

但是，我还需要 return 用户对象才能在 result

中获取它

return sequelize.transaction(t => {
        return createUser(body, {transaction: t})
        .then(user => {
            if (user != null) {
                return createSetup({"user_id" : user.dataValues.id}, {transaction: t})
                .then(setup => {
                    //this line is necessary to get the value in the result of the transaction
                    return user, setup
                })

提交的 Sequelize 事务的结果是 "undefined"

Result of committed Sequelize transaction is "undefined"

sql-server

transactions

node.js

sequelize.js