How to dynamically populate array of objects in mongoose?

I am trying to dynamically populate array of objects in mongoose. On my user model I want an array that contains all posts that user made. The problem is that I have multiple types of posts.Different post models:const ImagePost = mongoose.model('ImagePost', new Schema({ url: String })) const TextPost = mongoose.model('TextPost', new Schema({ text: String })) My user model looks like this:const userSchema = new Schema({ userName: { type: String, required: true }, posts: [{ postId: { type: Schema.Types.ObjectId, required: true, refPath: "postModel" }, postModel: { type: String, required: true, enum: ['ImagePost', 'TextPost'] } }] }) const User = mongoose.model('User', userSchema) How can I get the user from my database and automatically populate the posts the user made?The whey I think it should work is this but for some reason it doesn't do anything:User.findById('5d302c7caf1b8906ccb611b6').populate('posts.postId')

Submitted July 18, 2019 at 11:07AM by Wojtek1942