Django ORM Ninja: Advanced Techniques for Developers

1. Introduction to Django ORM

A quick overview of the Django ORM. One of the advantages of Django is the Django ORM.

2. Models, datatypes, and fields

You will learn about Django's robust modeling system, including field data types for precise database structuring. The section also covers migrations for seamless schema updates and the powerful admin interface, providing an intuitive way to manage your application's data.

Defining The First Model

3. Queries

This essential section is your treasure map for navigating Create, Read, Update, and Delete (CRUD) operations. Effortlessly craft queries to add new records, fetch and explore data with finesse, seamlessly update existing records, and confidently delete what's no longer needed. Each example is a key, unlocking the power and elegance of Django ORM. 🌟🔍💻🚀

4. Relations

Explore the intricate world of database relationships in Django! This section delves into the core concepts of Many-to-One, One-to-One, and Many-to-Many relationships. Learn how to effectively model real-world scenarios in your database using Django's powerful ORM, with clear examples and practical use-cases to guide you.

5. Complex Queries

After this section, you will be able to master Django's field lookups, Q and F objects for advanced queries, and Aggregation and Annotation for data summarization. You'll also learn techniques to minimize database hits, addressing the N+1 problem, and effectively using select and prefetch related.

Minimazing Database Hints

6. Advanced

This section delves into advanced Django concepts, including the Meta class for model customization, the implementation of constraints for data integrity, the basics of transactions for ensuring database consistency, and an overview of the User model, a core component for handling user authentication and permissions in Django applications.

One-to-One

A One-to-One relationship is used when one object of a model corresponds to exactly one object of another model. For example, a table of employees and another table of employee ID badges, where each employee has exactly one unique ID badge. To specify a One-to-One relation, use models.OneToOneField.

OneToOneField accepts all of the extra arguments accepted by ForeignKey.

There is just an example of usage One-to-One relations. We will not use it in our project.

You can learn more about this relation in the official documentation.