Python Django Tutorial #4: Django Models, Django ORM, database migrations | Django blog project
This Python Django Tutorial is about using Django Models to store user's data in databases with Django ORM. This video also is about Django database migrations.
Database migrations is a mechanism that allows us to roll back changes that we made to a database scheme. Database migrations in Django is something like Git for databases.
Our first Django Models is a Post model. A master of our Django blog will want to create a new blog post. And so we have to store the Blog's post data in a database.
To do it we have describe a Django model - a Post, that will represent our posts in a database. We have to describe fields of Django models that will become records in databases.
Django ORM allows us to describe a database scheme by creating Python classes.
After we'll create Django models we have to make migrations for these changes. Django migrations files - are Python files, that contain instructions what changes should be committed to a database.
We can create Django migration files with the command:
python manage.py makemigrations
After that we have to apply our migrations to a database:
python manage.py migrate
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▶️ This Django blog tutorial. List of videos:
#0. Demo
• Python Django Tutorial #0: Demo of Django ...
#1. Django Project Structure
• Python Django Tutorial #1: Django structur...
#2. Routing and Handling requests
• Python Django Tutorial #2: Django routing,...
#3. Template Inheritance
• Python Django Tutorial #3: Django Template...
#4. Django Models, Django ORM, Django database migrations (posts)
• Python Django Tutorial #4: Django Models, ...
#5. Tag Model and ManyToMany Relationships
• Python Django Tutorial #5: Django Many To ...
#6. Class Based Views and using Mixins
• Python Django Tutorial #6: Django Class Ba...
#7. Django Forms. Creating Tags.
• Python Django Tutorial #8: Django ModelFor...
#8. Forms. Creating Posts
• Python Django Tutorial #8: Django ModelFor...
#9. Updating via Forms
• Python Django Tutorial #9: Django Update F...
#10. Deleting via Forms
• Python Django Tutorial #10: Django Delete ...
#11. Using custom CSS
• Python Django Tutorial #11: Django static ...
#12. Restricting access
• Python Django Tutorial #12: Django permiss...
#13. Django Pagination
• Python Django Tutorial #13: Django Paginat...
#14. Django Basic Search
• Python Django Tutorial #14: Django Basic S...
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