Javascript

Question

在 nodejs 应用程序中使用 sequelize.js，我有一个 promise.all 接受两个承诺（一个 user 查询和一个 color 查询）：

router.get(`/someEndPoint`, (req, res) => {
    let userAccount = user.findOne({
        where: {
            id: //some ID
        }
    });

    let colorStuff = color.findOne({
        where: {
            colorName: //some color
        }
    })

    Promise.all([userAccount , colorStuff ]).then(([result1, result2]) => {
        //do stuff, such as:
        res.send('success');
    }).catch(err => {
        console.log(err)
    });
});

在说 //do stuff 的部分，我的控制台一直给我这个警告：

a promise was created in a handler at... but was not returned from it, 
see (URL that I can't post) at Function.Promise.attempt.Promise.try

我不确定如何解决这个问题。我在 .then 之后认为承诺已解决？

Answer 1

如果没有其他上下文很难判断，但也许您需要 return Promise.all

return Promise.all([user, color])...

来自此处的蓝鸟文档：https://github.com/petkaantonov/bluebird/blob/master/docs/docs/warning-explanations.md#warning-a-promise-was-created-in-a-handler-but-was-not-returned-from-it

如果在 // do stuff 区域中创建了任何其他承诺，请务必 return 也创建这些承诺。

Javascript - 无法解决此问题 'warning: promise was created in a handler'

Javascript - can't resolve this 'warning: promise was created in a handler'

node.js

sequelize.js

bluebird