The @virtual is recognized in extended class

[smujaddid]

Is there an existing issue for this?

• I have searched the existing issues

Current behavior

Assume I have these classes:

@Schema()
class Asset {
  @Prop({ required: true, trim: true })
  originalFilename: string
  
  @Prop({
    type: String,
    required: false,
    trim: true,
    nullable: true,
    default: null,
  })
  url?: string | null

  @Prop({
    type: MongooseSchema.Types.ObjectId,
    ref: 'User',
    required: false,
    index: true,
    nullable: true,
    default: null,
  })
  uploadedById?: Types.ObjectId | null

  @Virtual({
    options: {
      ref: 'User',
      localField: 'uploadedById',
      foreignField: '_id',
      justOne: true,
      nullable: true,
    },
  })
  uploadedBy?: UserDocument | null
}

@Schema()
class GroupPhoto extends Asset {
  @Prop({
    type: MongooseSchema.Types.ObjectId,
    ref: 'Group',
    required: false,
    index: true,
    nullable: true,
    default: null,
  })
  groupId?: Types.ObjectId | null

  @Virtual({
    options: {
      ref: 'Group',
      localField: 'groupId',
      foreignField: '_id',
      justOne: true,
      nullable: true,
    },
  })
  group?: GroupDocument | null
}

then trying to populate uploadedBy by using

await this.groupPhotoModel
      .find({})
      .populate('uploadedBy')
      .exec()

will result in error:

StrictPopulateError: Cannot populate path `uploadedBy` because it is not in your schema. Set the `strictPopulate` option to false to override.

I don't want to set strictPopulate to false.
The only way it will be working if I re-declare it on extended class GroupPhoto such as:

class GroupPhoto extends Asset {
  // ... redacted

  @Virtual({
    options: {
      ref: 'User',
      localField: 'uploadedById',
      foreignField: '_id',
      justOne: true,
      nullable: true,
    },
  })
  declare uploadedBy?: UserDocument | null
}

The thing is, properties with @prop can still be working on extended class such as url and originalFilename. Both will be inherited along with its decorator on the extended class.

Minimum reproduction code

https://gist.github.com/smujaddid/1cb930d92fe6483f9f1a072836c43266

Steps to reproduce

No response

Expected behavior

I'm expecting properties decorated with @virtual do not need to be re-declared on extended class just like @prop

Package version

10.1.0

mongoose version

8.8.1

NestJS version

10.4.8

Node.js version

20.18.0

In which operating systems have you tested?

• macOS
• Windows
• Linux

Other

No response

[kamilmysliwiec]

Would you like to create a PR for this issue?