pull method not available for mongoose.Schema.Types.ObjectId[]

Question

Hey I have created a model User like so:

import mongoose from 'mongoose';
const Schema = mongoose.Schema;

const userSchema = new Schema(
  {
    email: {
      type: String,
      required: true,
    },
    password: {
      type: String,
      required: true,
    },
    name: {
      type: String,
      required: true,
    },
    status: {
      type: String,
      default: 'I am new!',
    },
    posts: [
      {
        type: Schema.Types.ObjectId,
        ref: 'Post',
      },
    ],
  },
  { timestamps: true }
);

export const User = mongoose.model('User', userSchema);

I want to use the pull method to fetch a specific postId and clear it.

export const deletePost = async (req: Request, res: Response, next: NextFunction) => {
  try {
    const postId = req.params.postId;
    const fetchedPost = await Post.findById(postId);
    if (!fetchedPost) {
      const error = new HttpError("Could not find post.", 404);
      return next(error);
    }
    if (fetchedPost.creator.toString() !== req.userId) {
      const error = new HttpError("Not Authorized!", 403);
      return next(error);
    }
    clearImage(fetchedPost.imageUrl);

    await Post.findByIdAndDelete(postId);

    // Clearing User and Post relation
    const user = await User.findById(req.userId)!;
    if (user) {
      user.posts.pull(postId);
      await user.save();
    }

    res.status(200).json({ message: "Deleted post!" });
  } catch (err) {
    return next(new HttpError("Failed to delete a post", 500));
  }
};

However I am getting error from my ts lsp Property 'pull' does not exist on type 'ObjectId[]'.ts(2339) any

Have things changed in the the mongoose where pull method is deprecated and do I need to create pull util method manually or am I doing something wrong?

Answer 1

I think you should use Types.ObjectId instead of Schema.Types.ObjectId

Here is the github thread where this was dicussed.

An excerpt:

mongoose.Types are the object you work with within a mongoose document. These are special array subclasses, buffer subclasses, etc that we've hooked into or created special to ease updates and track changes.