How can I implement advanced seeding with TypeORM?

How can I implement advanced seeding with TypeORM?

To implement advanced seeding in TypeORM, you can create custom seeders for different entities and use the typeorm-seeding package.

Can you show me an example of a custom seeder?

Sure! You can create a seeder class like this:

import { Factory, times } from 'typeorm-seeding';
import { Connection } from 'typeorm';
import { User } from '../entities/User';

export default class CreateUsersSeed {
  public async run(factory: Factory, connection: Connection) {
    await factory(User) .createMany(10);
  }
}

What if I want to seed related entities?

You can use the createMany method with a factory that defines relationships. For example, if a User has Posts, you can create them together.

Is there a way to run seeds in a specific order?

Yes, you can control the order by creating a main seeder file that calls each seeder in the desired sequence.