Kursinnehåll

Django ORM Ninja: Advanced Techniques for Developers

1. Introduction to Django ORM

Introduction to the Course Introduction to the ORM Start a New Project Initialize a New Project

2. Models, datatypes, and fields

Defining The First Model Field Data Types Define Other Models Migrations Admin Interface

3. Queries

Create Query Retrieve Query Lazy Queries Ordering and Slicing Updating Deleting

4. Relations

Many-to-One ForeignKey Arguments One-to-One Many-to-Many

5. Complex Queries

Field Lookups Q and F Objects Aggregations Annotations Minimazing Database Hints

6. Advanced

Class Meta Constrains Transactions Basics User Model

Updating

To update specific information of an object in our table, we first need to retrieve that object, commonly using the get method:

author_3 = Author.objects.get(id=3)

Now, let's say we want to update the pen name of this author. We first access the current attributes:

print(author_3.first_name)  # -> "James"
print(author_3.last_name)  # -> "Clear"
print(author_3.pen_name)  # -> ""

Let's imagine that we want to update the pen_name of our 3-d author.

To update the pen name to "James Clear", we assign the new value and save the object:

author_3.pen_name = "James Clear"
author_3.save()

And that's essentially it for updating an object.

Var allt tydligt?

Tack för dina kommentarer!

Avsnitt 3. Kapitel 5

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Kursinnehåll

Django ORM Ninja: Advanced Techniques for Developers

1. Introduction to Django ORM

Introduction to the Course Introduction to the ORM Start a New Project Initialize a New Project

2. Models, datatypes, and fields

Defining The First Model Field Data Types Define Other Models Migrations Admin Interface

3. Queries

Create Query Retrieve Query Lazy Queries Ordering and Slicing Updating Deleting

4. Relations

Many-to-One ForeignKey Arguments One-to-One Many-to-Many

5. Complex Queries

Field Lookups Q and F Objects Aggregations Annotations Minimazing Database Hints

6. Advanced

Class Meta Constrains Transactions Basics User Model

Updating

To update specific information of an object in our table, we first need to retrieve that object, commonly using the get method:

author_3 = Author.objects.get(id=3)

Now, let's say we want to update the pen name of this author. We first access the current attributes:

print(author_3.first_name)  # -> "James"
print(author_3.last_name)  # -> "Clear"
print(author_3.pen_name)  # -> ""

Let's imagine that we want to update the pen_name of our 3-d author.

To update the pen name to "James Clear", we assign the new value and save the object:

author_3.pen_name = "James Clear"
author_3.save()

And that's essentially it for updating an object.

Var allt tydligt?

Tack för dina kommentarer!

Avsnitt 3. Kapitel 5

Django ORM Ninja: Advanced Techniques for Developers

Updating

1. Before updating an object in Django, what is the recommended first step?

2. How do you update the 'pen_name' attribute of an Author object in Django?

3. What must you do after changing an attribute of a Django object to persist the update?

Django ORM Ninja: Advanced Techniques for Developers

Updating

1. Before updating an object in Django, what is the recommended first step?

2. How do you update the 'pen_name' attribute of an Author object in Django?

3. What must you do after changing an attribute of a Django object to persist the update?