"Connection "default" was not found" error nestjs typeorm

Question

When I try to get the repository where my sessions are stored(the second line of code) it throws the error "Connection "default" was not found" I initialized TypeORM in the App.module.ts file

main.ts

const app = await NestFactory.create(AppModule);
const sessionRepository = getRepository(Session);
app.useWebSocketAdapter(new WebsocketAdapter(app));
app.enableCors({ origin: 'http://localhost:5173', credentials: true });
app.use(
  session({
    secret: process.env.SESSION_SECRET,
    resave: false,
    saveUninitialized: false,
    name: 'session_cookie_name',
    cookie: {
      maxAge: 1000 * 60 * 60 * 24,
    },
    store: new TypeormStore().connect(sessionRepository),
  }),
);
app.use(passport.initialize());
app.use(passport.session());

await app.listen(3000);

App.module.ts

@Module({
  imports: [
    AuthModule,
    UsersModule,
    ConfigModule.forRoot({
      envFilePath: '.env.development',
    }),
    PassportModule.register({
      session: true,
    }),
    TypeOrmModule.forRoot({
      type: 'mysql',
      host: process.env.DB_HOST,
      port: parseInt(process.env.DB_PORT),
      username: process.env.DB_USERNAME,
      password: process.env.DB_PASSWORD,
      database: process.env.DB_NAME,
      entities: [User, Session],
      synchronize: true,
      logging: false,
    }),
    GatewayModule,
  ],
  controllers: [],
  providers: [],
})
export class AppModule {}

Can someone explain where I did wrong?

Answer 1

Rather than using getRepository() from TypeORM you can use app.get() from the NestApplication to get a provider. Pass in getRepositoryToken(Session) and { strict: true } to get the same repository as getRepository(Session), but now from the DI container.

Note: to do this, TypeormModule.forFeature([Session]) must also be in an imports array in the application, as this sets up the token for getRepositoryToken()