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Package detailsv2.13.2

realtime_client

Listens to changes in a PostgreSQL Database and via websockets. This is for usage with Supabase Realtime server.

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Install package

flutter pub add realtime_client

Package Overview

Package selection guidance compiled from public package information, community data, and project usage.

The realtime_client package enables Flutter applications to receive live updates from a PostgreSQL database using WebSockets, specifically designed for integration with the Supabase Realtime server. It allows apps to listen to database changes in real time, such as inserts, updates, and deletions, ensuring data remains synchronized across clients without manual polling. Ideal for collaborative apps, chat systems, or dashboards requiring instant data refreshes. The package supports all major platforms, including mobile, web, and desktop, making it suitable for cross-platform real-time experiences.

Use cases

  • Real-time chat applications
  • Live dashboard updates
  • Collaborative editing tools
  • Instant notification systems
  • Database change monitoring

Key features

  • WebSocket-based real-time updates
  • Supabase Realtime server integration
  • Cross-platform support
  • Event-driven data listening
  • Automatic reconnection handling

Suitable for

  • Developers building real-time features
  • Apps requiring live data synchronization
  • Supabase-powered projects
  • Multi-user interactive applications
  • Full-stack Flutter developers

Considerations

  • Requires a Supabase project with Realtime enabled
  • Network connectivity needed for WebSocket communication
  • Potential performance impact with high-frequency events
  • Authentication required for secure channel access
  • Limited to Supabase's Realtime infrastructure

Original README

Original README snapshot from the linked source repository. Visit the repository for the latest content.


Supabase Logo

Supabase Flutter

Flutter client library for Supabase.

Guides · Reference Docs · Migration Guides

Build Package License: MIT

Run locally

This repo is a monorepo powered by Melos containing supabase_flutter and its sub-libraries. All packages are located in the packages directory.

To install on a locally developed app:

  • Clone this repo
  • Install Melos globally if you haven't already: dart pub global activate melos
  • Run melos bootstrap or melos bs at the root of the cloned directory to install dependencies
  • Add the target package to your pubspec.yaml file specifying the path.
    supabase_flutter:
      path: <your-path-to-the-local-supabase-flutter-repo>/packages/supabase_flutter
    

Testing your app

The helpers the test suites of these packages run on are published in package:supabase_test, so your tests can build on the same primitives: mock HTTP clients, JWT builders, auth session fixtures and realtime frames. Add the package as a dev dependency:

dev_dependencies:
  supabase_test: ^0.1.0

Then stub the endpoints the code under test talks to and run it against a real SupabaseClient, with no running stack required:

final httpClient = MockSupabaseHttpClient()
  ..stubTable('todos', rows: [
    {'id': 1, 'task': 'Ship it', 'status': false},
  ]);
final supabase = testSupabaseClient(httpClient: httpClient);
addTearDown(supabase.dispose);

final todos = await supabase.from('todos').select();
expect(todos, hasLength(1));

See the supabase_test README for the full guide: stubbing database, rpc, edge function and auth endpoints, asserting on recorded requests, running tests as a signed-in user, and wiring Supabase.initialize in Flutter widget tests.

Testing this repo

The tests for the packages postgrest, supabase_auth, supabase_realtime and supabase_storage run against a local Supabase stack. To run these tests locally you need docker and the Supabase CLI installed.

The single configuration for the stack lives in the supabase directory at the repository root. Start it with:

supabase start

Run the Dart tests within the package directory in packages/<package> with the following command. The -j 1 flag runs the tests not concurrently, which works better since the tests run against the same services.

dart test -j 1

To stop the stack run the following command from the repository root:

supabase stop

Contributing

  • Fork the repo on GitHub
  • Clone the project to your own machine
  • Commit changes to your own branch
  • Push your work back up to your fork
  • Submit a Pull request so that we can review your changes and merge

License

This repo is licensed under MIT.

Resources

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Dependencies

Dependency list 6 items

Source repository

Projects using this package