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Django ORM Ninja: Advanced Techniques for Developers

DeletingDeleting

Deleting an object is as straightforward as creating or updating one. You simply define the object to delete and then call the delete() method.

For example, let's create a test author for deletion:

Note

The save() method isn't necessary here as create() already saves the object.

Now, our table has a new instance, and Author.objects.all() will show information about four authors.

The most common approach to delete is to retrieve the instance by its ID and then delete it:

No need to save the changes after deletion.

1. How do you delete an object in Django?
2. What happens when you execute Author.objects.get(id=4).delete() in Django?
3. After deleting an object in Django, what is required to reflect this change in the database?

How do you delete an object in Django?

Select the correct answer

What happens when you execute Author.objects.get(id=4).delete() in Django?

Select the correct answer

After deleting an object in Django, what is required to reflect this change in the database?

Select the correct answer

Everything was clear?

Section 3. Chapter 6
course content

Course Content

Django ORM Ninja: Advanced Techniques for Developers

1. Introduction to Django ORM

Introduction to the CourseIntroduction to the ORMStart a New ProjectInitialize a New Project

2. Models, datatypes, and fields

Defining The First ModelField Data TypesDefine Other ModelsMigrationsAdmin Interface

3. Queries

Create QueryRetrieve QueryLazy QueriesOrdering and SlicingUpdatingDeleting

4. Relations

Many-to-OneForeignKey ArgumentsOne-to-OneMany-to-Many

5. Complex Queries

Field LookupsQ and F ObjectsAggregationsAnnotationsMinimazing Database Hints

6. Advanced

Class MetaConstrainsTransactions BasicsUser Model

Django ORM Ninja: Advanced Techniques for Developers

DeletingDeleting

Deleting an object is as straightforward as creating or updating one. You simply define the object to delete and then call the delete() method.

For example, let's create a test author for deletion:

Note

The save() method isn't necessary here as create() already saves the object.

Now, our table has a new instance, and Author.objects.all() will show information about four authors.

The most common approach to delete is to retrieve the instance by its ID and then delete it:

No need to save the changes after deletion.

1. How do you delete an object in Django?
2. What happens when you execute Author.objects.get(id=4).delete() in Django?
3. After deleting an object in Django, what is required to reflect this change in the database?

How do you delete an object in Django?

Select the correct answer

What happens when you execute Author.objects.get(id=4).delete() in Django?

Select the correct answer

After deleting an object in Django, what is required to reflect this change in the database?

Select the correct answer

Everything was clear?

Section 3. Chapter 6
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