Python Django Tutorial #4: Django Models, Django ORM, database migrations | Django blog project

Publié le: 22 février 2020
sur la chaîne: Red Eyed Coder Club

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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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