I would like to update the author name of a post (esc. old posts by that user) anytime that user updates his profile name.

My code looks like this,

router('/:id', async(req, res) {
if (req.body._id == req.params.id) {

try {
const user = await User.find(req.params.id):
let oldfirstName = user.firstname;
let oldlastName = user.lastname;

const author = oldfirstName   ' '    oldlastName;

const postsByUser = await Post.find({author: author}); // gets posts by same user

const updatedUser = await User.findByIdAndUpdate(req.params.id, {
{
$set: {
firstname: req.body.firstname,
lastname: req.body.lastname,
}
}
});

let updatedAuthor = updatedUser.firstname   ' '    updatedUser.lastname;

await postsByUser.updateMany({}, {author: updatedAuthor});


});
res.status(200).json();
} catch (err) {
res.status(500).json();
}

}

What am I doing wrong please?

I am building a blog. Users full name equals the displayed author name. I tried updating the author's name on old posts anytime there is an update in user's firstname or lastname on profile. I could update user's profile, but the new update does not apply to old posts by that user.

CodePudding user response：

This line seems off to me:

await postsByUser.updateMany({}, {author: updatedAuthor});

postsByUser is not a Model.

You likely just want to issue an update like this: await Post.updateMany({author: author}, {$set: {author: updatedAuthor}}) Which is essentially saying "update all posts where author is the "old" author name, and set it to the new author name".