Date serialize not always working

[hunkaf]

I have a Model with a date field, where I applied serialization.
When running a simple query, it is working ok, but when I use sum('some field') on the Model, then date is not serialized.

Sample Code (to reproduce the issue)

MyModel

import { DateTime } from 'luxon'
import { column, BaseModel } from '@ioc:Adonis/Lucid/Orm'

export default class MyModel extends BaseModel {
  @column({ isPrimary: true })
  public id: number

  @column.date({
    serialize: (value) => value.toFormat('yyyy-LL-dd'),
  })
  public date: DateTime

  @column()
  public dataValue: number
}

Query

const result = await MyModel.query().select('date').sum('data_value').groupBy('date')

Expected outcome

{
    "result": [
        {
            "date": "2021-01-01",
            "sum(`data_value`)": 1030
        },
        {
            "date": "2021-01-02",
            "sum(`data_value`)": 1040
        }
    ]
}

Actual outcome

{
    "result": [
        {
            "date": "2021-01-01T00:00:00.000Z",
            "sum(`data_value`)": 1030
        },
        {
            "date": "2021-01-02T00:00:00.000Z",
            "sum(`data_value`)": 1040
        }
    ]
}

When I run a query without sum, it is working well:

const result = await MyModel.query().select('date').groupBy('date')

Outcome:

{
    "result": [
        {
            "date": "2021-01-01"
        },
        {
            "date": "2021-01-02"
        }
    ]
}

[thetutlage]

Fixed in 21181a3