Django Models: Null Values Explained (සිංහල) | Beginner Guide

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මෙම video එකෙන් ඔබට Django models වල null values handle කරන ආකාරය step-by-step explain කරනවා.

Field-level options like null=True සහ blank=True use කරලා database table එකේ empty data manage කරන්නේ කොහොමද කියලා දක්වනවා 🚀

🎯 What You Will Learn

✔ null=True → database column allow NULL
✔ blank=True → form validation allow empty input
✔ Difference between null and blank
✔ Use cases: optional fields, description, published date
✔ Real-world example: Course model with optional fields
⚡ Key Points

✔ null=True → database level null allowed
✔ blank=True → form & admin level optional
✔ Use |default in template to handle null/empty values
✔ Optional fields make models flexible

🧠 Why This Lesson is Important?

✔ Understand optional fields in Django
✔ Avoid errors when data is missing
✔ Prepare models for real-world scenarios with incomplete data
✔ Combined with CRUD operations → professional project ready

Видео Django Models: Null Values Explained (සිංහල) | Beginner Guide канала NIMA ACADEMY