Combining multiple SOURCEs into one single TARGET

[herna]

Hi,

I don't know if there's a workaround for this.

In my project I have the case where one single class (form) is a combination of several other classes (model objects that reflect tables from the database).

I have for example these 2 models:

@freezed
class EquipmentBase with _$EquipmentBase {
  const factory EquipmentBase({
    required int id,
    required String name,
  }) = _EquipmentBase;
}

@freezed
class Equipment with _$Equipment {
  const factory Equipment({
    required int id,
    required int type,
  }) = _Equipment;
}

And this single form object:

@freezed
class EquipmentForm with _$EquipmentForm {
  const factory EquipmentForm({
    required int id,
    required String name,
    required int type,
  }) = _EquipmentForm;
}

I'd like to be able to get an EquipmentForm (TARGET) based on both Equipment and EquipmentBase (SOURCES)

At the moment I just make a double conversion and combine manually the properties at the end:

• Convert EquipmentBase to EquipmentForm
• Convert Equipment to EquipmentForm
• Use copyWith() to combine both EquipmentForm objects

Is there anyway I can do this at the moment? Maybe through a custom converter or similar?

Thanks.

[tenhobi]

Hi, at the moment, no. We would like to support this case with normal classes. (not for sealed/freezed, reasons similar to #148).

The implementation could be done for N input classes to 1 output, probably as a new MapTypeMultiple or something like that. But in the near future, I don't think we will have enough time to implement that.

You are, however, free to take the initiative if you'd like to!

[herna]

Thanks @tenhobi

Not a big deal for me at the moment either, just an improvement for the future.