Error: Undefined name 'Offset' #3561
Replies: 1 comment 5 replies
-
|
You can't use Why are you running |
Beta Was this translation helpful? Give feedback.
-
|
How should I run the main function in the following cod? This is the entire code: import 'package:drift/drift.dart';
import 'package:drift_flutter/drift_flutter.dart';
import 'package:path_provider/path_provider.dart';
part 'database.g.dart';
class TodoItems extends Table {
IntColumn get id => integer().autoIncrement()();
TextColumn get title => text().withLength(min: 6, max: 32)();
TextColumn get content => text().named('body')();
DateTimeColumn get createdAt => dateTime().nullable()();
}
@DriftDatabase(tables: [TodoItems])
class AppDatabase extends _$AppDatabase {
// After generating code, this class needs to define a `schemaVersion` getter
// and a constructor telling drift where the database should be stored.
// These are described in the getting started guide: https://drift.simonbinder.eu/setup/
AppDatabase([QueryExecutor? executor]) : super(executor ?? _openConnection());
@override
int get schemaVersion => 1;
static QueryExecutor _openConnection() {
return driftDatabase(
name: 'my_database',
native: const DriftNativeOptions(
// By default, `driftDatabase` from `package:drift_flutter` stores the
// database files in `getApplicationDocumentsDirectory()`.
databaseDirectory: getApplicationSupportDirectory,
),
// If you need web support, see https://drift.simonbinder.eu/platforms/web/
);
}
}
void main() async {
// WidgetsFlutterBinding.ensureInitialized();
print('hi');
// final database = AppDatabase();
// await database.into(database.todoItems).insert(TodoItemsCompanion.insert(
// title: 'todo: finish drift setup',
// content: 'We can now write queries and define our own tables.',
// ));
// List<TodoItem> allItems = await database.select(database.todoItems).get();
// print('items in database: $allItems');
// print(database);
}
|
Beta Was this translation helpful? Give feedback.
-
|
The code was assembled from the Getting Started guide, and the file database.g.dart was also generated. |
Beta Was this translation helpful? Give feedback.
-
|
I see. |
Beta Was this translation helpful? Give feedback.
-
|
You could also take a look at this for a simple example that doesn't require Flutter. |
Beta Was this translation helpful? Give feedback.
-
|
Ok. Solved. Thanks for your help. |
Beta Was this translation helpful? Give feedback.
Uh oh!
There was an error while loading. Please reload this page.
Uh oh!
There was an error while loading. Please reload this page.
-
I followed the Getting Started guide (https://drift.simonbinder.eu/setup/), but not got started after all.
After setting up the dependencies and adding the database class in the guide, I ran the command 'dart run database.dart' to run the main function, but it reported a lot of errors like:
So what was wrong with the guide or code there? Or were any extra operations needed, not mentioned in the Getting Started guide?
Beta Was this translation helpful? Give feedback.
All reactions