How to couple the table created by the drift file 🤔️？

[greenking19]

This is a table created in the Dart file, which allows for coupling.
What should I do in the Drift file?
It seems that the Existing row classes in the document needs to be created first. My table is a bit complicated, so it would be a bit troublesome to manually create it.
If there are other ways, that would be even better.

Example

enum StatusEnum { open, close }

mixin WithStatus on Table {
  IntColumn get status => intEnum<StatusEnum>()();
}

class TodoItems extends Table with WithStatus {
  IntColumn get id => integer().autoIncrement()();
  TextColumn get title => text()();
  TextColumn get userId => text()();
}

class TaskItems extends Table with WithStatus {
  IntColumn get id => integer().autoIncrement()();
  TextColumn get title => text()();
  TextColumn get userId => text()();
}

void doSomething(dynamic data) {
  if (data is WithStatus) {
    // do something
  }
}

[simolus3]

There's no way to do declare an inheritance structure for tables in drift files, they can't share a a common mixin for columns.

But while there is no way to do this with type safety, you can still access columns of abstract tables. For instance, if you had

CREATE TABLE todo_items (
  status INTEGER ...,
  ...
);

CREATE TABLE task_items (
  status INTEGER ...,
  ...
);

Then you can do

void doSomething(TableInfo data) {
  if (data.columnsByName.containsKey('status')) {
    // do something
  }
}