Hi, so in general I have an iterating problem:

// @route       POST api/profile/rating/:id
// @description Add rating
// @access      Private
router.post(
  "/rating/:id",
  passport.authenticate("jwt", { session: false }),
  (req, res) => {
    console.log("Profile ID that we are rating", req.body.profileId);
    Profile.findById(req.body.profileId)
      .then(profile => {
        console.log("All in the profile ratings", profile.ratings);
        if (
          profile.ratings.filter(
            rating => rating.user.toString() === req.user.id
          ).length > 0
        ) {
          return res
            .status(400)
            .json({ alreadyrated: "User already rated this profile" });
        }
        profile.ratings.unshift(
          { user: req.user.id },
          { ratingNumber: req.body.ratingNumber }
        );

        profile.save().then(profile => res.json(profile));
      })
      .catch(err => {
        res.status(404).json({ profilenotfound: "No profile found" });
      });
  }
);

This is the console.log I get:

 All in the profile ratings CoreMongooseArray [
[0]   { _id: 5c7d46893a028e1dec3e3f0e,
[0]     user: 5c7d3e1618874a2540350d20 },
[0]   { _id: 5c7d46893a028e1dec3e3f0f, ratingNumber: 5 } ]

And the error is: { profilenotfound: "No profile found" }

So the problem is that this code worked when I didn't have another element (this ratingNumber and his ID), but now when I have it when I want to compare if the id of the person that is rating already exists I get an error since I cannot correctly check it.