import { AdminModule } from 'admin-nestjs/typeorm';

@Module({
  imports: [
    AdminModule.forRoot([User, Post], dataSource)
  ]
})
export class AppModule {}

DataSource

It must be initialized and connected to the database beforehand, otherwise the repositories will not work.

import { DataSource } from 'typeorm';
import { User, Post } from './entities';

const AppDataSource = new DataSource({
  type: 'postgres',
  host: 'localhost',
  port: 5432,
  username: 'postgres',
  password: '123',
  database: 'mydb',
  entities: [User, Post],
  synchronize: true,
});

await AppDataSource.initialize();