https://github.com/supabase-community/flutter-chat

Simple chat application built with Flutter and Supabase.
https://github.com/supabase-community/flutter-chat

chat chat-application flutter realtime supabase

Last synced: 28 days ago
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Simple chat application built with Flutter and Supabase.

• Host: GitHub
• URL: https://github.com/supabase-community/flutter-chat
• Owner: supabase-community
• Created: 2022-04-22T00:52:35.000Z (over 2 years ago)
• Default Branch: main
• Last Pushed: 2024-05-23T01:24:19.000Z (8 months ago)
• Last Synced: 2024-12-16T11:33:11.107Z (about 1 month ago)
• Topics: chat, chat-application, flutter, realtime, supabase
• Language: Dart
• Homepage: https://supabase.com
• Size: 229 KB
• Stars: 107
• Watchers: 8
• Forks: 27
• Open Issues: 4
• Metadata Files:
  • Readme: README.md

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README

        
# Flutter Chat Example

Simple chat app to demonstrate the realtime capability of Supabase with Flutter. You can follow along on how to build this app on [this article](https://supabase.com/blog/flutter-tutorial-building-a-chat-app).

You can also find an example using [row level security](https://supabase.com/docs/guides/auth/row-level-security) to provide chat rooms to enable 1 to 1 chats on the [`with-auth` branch](https://github.com/supabase-community/flutter-chat/tree/with_auth). 

## SQL

```sql

-- *** Table definitions ***

create table if not exists public.profiles (

    id uuid references auth.users on delete cascade not null primary key,

    username varchar(24) not null unique,

    created_at timestamp with time zone default timezone('utc' :: text, now()) not null,

    -- username should be 3 to 24 characters long containing alphabets, numbers and underscores

    constraint username_validation check (username ~* '^[A-Za-z0-9_]{3,24}$')

);

comment on table public.profiles is 'Holds all of users profile information';

create table if not exists public.messages (

    id uuid not null primary key default uuid_generate_v4(),

    profile_id uuid default auth.uid() references public.profiles(id) on delete cascade not null,

    content varchar(500) not null,

    created_at timestamp with time zone default timezone('utc' :: text, now()) not null

);

comment on table public.messages is 'Holds individual messages within a chat room.';

-- *** Add tables to the publication to enable realtime ***

alter publication supabase_realtime add table public.messages;

-- Function to create a new row in profiles table upon signup

-- Also copies the username value from metadata

create or replace function handle_new_user() returns trigger as $$

    begin

        insert into public.profiles(id, username)

        values(new.id, new.raw_user_meta_data->>'username');

        return new;

    end;

$$ language plpgsql security definer;

-- Trigger to call `handle_new_user` when new user signs up

create trigger on_auth_user_created

    after insert on auth.users

    for each row

    execute function handle_new_user();

```