Алексей Яковлев

router.post('/add/post/:id', async(req, res) => {
    try {
        const {text, img} = await req.body;
        const user = await User.findById(req.params.id);

        await User.updateOne({
            firstName: user.firstName,
            lastName: user.lastName,
            email: user.email,
            password: user.password,
            background: user.background,
            photo: user.photo,
            followers: user.followers
        },
        {$push: {posts: {$each: [{text, img}]}}});

        res.redirect('/profile/'+user._id);
    } catch (e) {
        console.log('error ' + e);
    }
})