Sequelize 不更新表中的行

Question

I am using sequelize for the first time. I have a table called feed in my DB, with columns ID , caption , and url . In my controller I have a simple function where I am updating a row in a table:

router.patch('/:id', 
    requireAuth, 
    async (req: Request, res: Response) => {
        let { id } = req.params;
        const item =  await FeedItem.update({ ...req.body }, {
            where: {
              id: id
            }
        });
        if (item === null) {
            return res.status(404).send({ message: 'Feed not found' });
        }
        res.send(item);
});

I am sending json body that looks like this:

{
    "caption": "NewTest",
    "url": "Newtest.jpg"
}

I see that data is sent correctly in the console, but when I post to the endpoint with an id of 2, I get as a response:

[
    1
]

I can also see in the DB, that the row has not been updated. What am I doing wrong here, how can I updated a row in the table and return the new updated value?

Answer 1

FeedItem.update method returns count of affected rows. That is why you are getting 1 . If you need to have FeedItem instance itself you can retrieve it first and update the instance:

let feedItem = await FeedItem.findById(id);
if (!feedItem) {
   return res.status(404).send({ message: 'Feed not found' });
}
feedItem = await feedItem.updateAttributes(req.body);

return res.send(feedItem);