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Description:

flutter data

Flutter Data

Persistent reactive models in Flutter with zero boilerplate #
Flutter Data is an offline-first data framework with a customizable REST client and powerful model relationships.
Inspired by Ember Data and ActiveRecord.
Features #

Repositories for all models 🚀

CRUD and custom remote endpoints
StateNotifier watcher APIs

Built for offline-first 🔌

Hive-based local storage at its core
Failure handling & retry API

Intuitive APIs, effortless setup 💙

Truly configurable and composable via Dart mixins and codegen
Built-in Riverpod providers for all models

Exceptional relationship support ⚡️

Automatically synchronized, fully traversable relationship graph
Reactive relationships

Check out the Tutorial 📚 where we build a TO-DO app from the ground up in record time.
👩🏾‍💻 Usage #
(See the quickstart guide for setup and boot configuration.)
For a given User model annotated with @DataRepository:
@JsonSerializable()
@DataRepository([MyJSONServerAdapter])
class User extends DataModel<User> {
@override
final int? id; // ID can be of any type
final String name;
User({this.id, required this.name});
// `User.fromJson` and `toJson` optional
}

mixin MyJSONServerAdapter on RemoteAdapter<User> {
@override
String get baseUrl => "https://my-json-server.typicode.com/flutterdata/demo/";
}
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After a code-gen build, Flutter Data will generate a Repository<User> (and shortcuts like ref.users for Riverpod):
@override
Widget build(BuildContext context, WidgetRef ref) {
final state = ref.users.watchOne(1);
if (state.isLoading) {
return Center(child: const CircularProgressIndicator());
}
final user = state.model;
return Text(user.name);
}
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Update the user:
TextButton(
onPressed: () => ref.users.save(User(id: 1, name: 'Updated')),
child: Text('Update'),
),
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ref.users.watchOne(1) will make a background HTTP request (to https://my-json-server.typicode.com/flutterdata/demo/users/1 in this case), deserialize data and listen for any further changes to the User – whether those are local or remote!
state is of type DataState which has loading, error and data substates.
In addition to the reactivity, DataModels get extensions and automatic relationships, ActiveRecord-style, so the above becomes:
GestureDetector(
onTap: () => User(id: 1, name: 'Updated').save(),
child: Text('Update')
),
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More examples:
final task = await Task(title: 'Finish docs').save();
// or its equivalent:
final task = await ref.tasks.save(Task(title: 'Finish docs'));
// POST https://my-json-server.typicode.com/flutterdata/demo/tasks/
print(task.id); // 201

final user = await repository.findOne(1, params: {'_embed': 'tasks'});
// (remember repository can be accessed via ref.users)
// GET https://my-json-server.typicode.com/flutterdata/demo/users/1?_embed=tasks
print(user.tasks.length); // 20

await user.tasks.last.delete();
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Explore the Documentation.
Compatibility #
Fully compatible with the tools we know and love:

Flutter
✅
And pure Dart, too.

Flutter Web
✅
Supported (untested)

json_serializable
✅
Fully supported (but not required)

Riverpod
✅
Supported & automatically wired up

Classic JSON REST API
✅
Built-in support!

JSON:API
✅
Supported via external adapter

Firebase, Supabase, GraphQL
✅
Can be fully supported by writing custom adapters

Freezed
✅
Supported!

📲 Apps using Flutter Data in production #

Drexbible

➕ Questions and collaborating #
Please use Github to ask questions, open issues and send PRs. Thanks!
Tests can be run with: dart test
📝 License #
See LICENSE.