Скачать или смотреть How to Get the Newly Created Record ID in NestJS using MikroORM

Discover the straightforward method to retrieve the `ID` of a newly created record in your NestJS application with MikroORM.
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Understanding the Process of Retrieving a Newly Created Record ID in NestJS with MikroORM

In the ever-evolving world of web development, frameworks like NestJS and ORMs like MikroORM are becoming increasingly popular. They simplify many aspects of building robust applications. However, as you dive into your projects, you may find yourself stuck with certain configurations and methods – especially when it comes to handling database records. One common question arises: How can I retrieve the ID of a newly created record after it has been persisted?

In this guide, we will thoroughly explore how to efficiently obtain the record's ID immediately upon its creation using MikroORM in a NestJS application.

The Challenge

When creating new records in a database using MikroORM, developers often need to access the unique identifier (ID) of that record right after it is created. Not retrieving this ID correctly can lead to issues down the line when you want to reference the newly created entity in your application.

The Solution

Let’s break down the solution into clear and easy-to-follow steps, so you can seamlessly implement this in your project.

Step-by-Step Guide to Retrieve the Record ID

Create the Entity
Start by creating an instance of your entity. In this case, we're demonstrating with a User entity.

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Persist the Entity
Use the entity manager (em) to persist the newly created user. This step informs MikroORM that the user should be stored in the database.

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Flush the Changes
The real magic happens here! Calling await em.flush(); will save the user entity to the database and generate a unique ID for that entry. This process commits the changes to the database.

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Access the ID
Finally, you can access the ID of the user entity. After the flush operation, the entity will now have an id property that you can log or store as needed.

[[See Video to Reveal this Text or Code Snippet]]

Complete Example Code

Here's a concise version of the whole process wrapped in a typical NestJS service method:

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Conclusion

Retrieving the ID of a newly created record is a straightforward process once you understand the steps involved. Using MikroORM's persist and flush methods makes it easy to work with entities, ensuring you can immediately access their properties, including the unique ID.

Make sure to incorporate this technique in your future NestJS and MikroORM projects to enhance your application's efficiency and maintainability!

Now that you have this knowledge, start implementing it in your application, and watch your productivity soar.