How can I manage transactions in TypeORM?

How can I manage transactions in TypeORM?

You can manage transactions in TypeORM using the EntityManager or by using the @Transaction decorator. Would you like an example?

Yes, please provide an example using the EntityManager.

Sure! Here's a simple example:

await connection.transaction(async entityManager => {
    const user = new User();
    user.name = 'John Doe';
    await entityManager.save(user);

    const post = new Post();
    post.title = 'Hello World';
    post.user = user;
    await entityManager.save(post);
});

This code creates a user and a post within a transaction.

What happens if an error occurs during the transaction?

If an error occurs, the transaction will be rolled back, and none of the changes will be saved to the database. This ensures data integrity.