Скачать или смотреть Using mongoDB with Django: Managing _id Field with djongo

Learn how to use `djongo` with `Django` to manage the `_id` field in `mongoDB` without generating an `id` field in your models.
---
This video is based on the question https://stackoverflow.com/q/77031858/ asked by the user 'Niv' ( https://stackoverflow.com/u/9758104/ ) and on the answer https://stackoverflow.com/a/77032351/ provided by the user 'Ehsan Shavandi' ( https://stackoverflow.com/u/16000277/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: mongoDB django _id field instead of id using djongo

Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l...
The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license.

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---
Mastering the _id Field in Django with MongoDB and Djongo

As more developers explore the benefits of NoSQL databases, the need to integrate these with traditional frameworks like Django becomes increasingly important. This is particularly true when using MongoDB, where understanding how to manage the default _id field can pose challenges. This guide dives into how to effectively manage the _id field in a Django application connected to MongoDB through Djongo.

The Problem: Managing the _id Field

When you are working with Django and attempting to use MongoDB via Djongo, you might encounter issues related to the _id field:

Automatic Creation of id Field: Django models traditionally create an id field as the primary key, which can conflict with MongoDB's _id.

Fetching Documents: You want to ensure that when you query the database for documents, you also retrieve and utilize the _id field.

Parameter Checking: When handling requests such as GET, PUT, or DELETE, you want to confirm that the provided ID matches the document’s _id.

These challenges can lead to confusion and errors in your application, particularly around handling the primary keys and foreign keys.

The Solution: Configuring Your Django Model

To effectively manage the _id field in your Django application, you'll need to modify your models and serializers. Below, we break this down into actionable steps:

Step 1: Update Your Model

In your models.py, define the _id field as a primary key using the ObjectIdField:

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

Key Changes Made:

Set _id as the primary_key, which prevents Django from automatically adding the id field.

Ensure editable=False, so that the _id field won't be accidentally modified.

Step 2: Modify Your Serializer

Your serializer must also reflect this change in the model so that it correctly processes the _id field:

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

Step 3: Implementing the Request Handling

In your views, handle ID checks against the _id field. Here's how to adjust your request handling functions:

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

Important Notes:

Use ObjectId(id) when querying for the document which matches the _id.

Ensure that the _id is provided in the correct format when making requests.

Conclusion

Integrating Django with MongoDB via Djongo doesn't have to be a struggle. By focusing on proper configuration of your models, serializers, and request handling, you can efficiently manage the _id field and avoid common pitfalls associated with primary key issues. With this guide, you should be well on your way to a seamless integration of Django and MongoDB.

Feel free to reach out with any further questions or insights as you dive deeper into web development with these powerful tools!