In Django Session 27, we continue learning Django ORM (Object Relational Mapper) and focus on how to fetch a single (particular) record from the database using the get() method.
This session helps you understand how Django ORM works internally, what type of object get() returns, and how to handle common errors while fetching data.
🔹 Topics Covered in This Session
✅ Getting a Particular Record using get()
What is get() in Django ORM
When to use get() instead of all()
Syntax and working of get()
Fetching data using a unique field
Accessing individual model fields from the returned object
🧠 Understanding Returned Data
get() returns a single model object
Difference between QuerySet and Model Object
Why .exists() and .count() do not work with get()
⚠️ Common Errors Explained in Detail
❌ DoesNotExist Error
Occurs when no record matches the condition
Why Django raises this exception
Real-time example from Django shell
❌ MultipleObjectsReturned Error
Occurs when more than one record matches
Why get() must always return only one record
Importance of using unique fields
🔍 Live Django Shell Demonstration
Fetching records using get()
Accessing object attributes
Observing and understanding exceptions
Learning how ORM communicates with the database
📌 Concept Type: Django ORM
📌 Session Focus: get() method
📌 Level: Beginner
📌 Pre-requisite: Basic Django Models & ORM (all())
This session builds a strong foundation for upcoming ORM sessions where we will cover:
ORM lookups
Conditional queries
Advanced filtering techniques
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