This talk was given in PyCon 2018 in Lagos, Nigeria. The purpose was to highlight the main features introduced in the new Django major version.

1. What’s new in 2.0?

2. Ibrahim Diop
@diopib

3. What we will discuss
Release Notes
Impact on day to day development
How we’re dealing with it
Conclusion

4. Release Notes
Django 2.0

5. 2 3

6. Simplified URL syntax
Then
Now
url(r'^articles/(?P<year>[0-9]{4})/$', views.year_archive),
path('articles/<int:year>/', views.year_archive),

7. Mobile friendly Admin

8. Windows expressions
>>> from django.db.models import Avg, ExtractYear, F, Window
>>> Movie.objects.annotate(
>>> avg_rating=Window(
>>> expression=Avg('rating'),
>>> partition_by=[F('studio'), F('genre')],
>>> order_by=ExtractYear('released').asc(),
>>> ),
>>> )
Apply function on partitions
https://www.merixstudio.com/

9. Minor Changes
https://docs.djangoproject.com/en/2.1/releases/2.0/

10. Minor Changes
Forms: new date & time widgets:
Adding extra context from the URL
Naming Squash Migrations
TemplateView.as_view(extra_context={'title': 'Custom Title'})
SplitDateTimeWidget, SplitHiddenDateTimeWidget
—squashed-name

11. Minor Changes (2)
Models: search part of a string in database with StrIndex
>>> cars = Car.objects.annotate(
... brand_index=StrIndex(‘name', Value('Toyota'))
... ).filter(brand_index__gt=0)

12. Minor Changes (3)
Web server support HTTP 1.1
ForeignKey on_delete is mandatory
https://developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/Evolution_of_HTTP

13. Minor Changes (4)
Last name size increased to 150 Characters
😊

14. To be careful about when migrating
Python 2 drop
on_delete
new URL format VS dependencies

15. Conclusion
To migrate or not to migrate?

16. PyCon Nigeria is dedicated to providing a harassment-
free conference experience for everyone, regardless of
gender, gender identity and expression, age, sexual
orientation, disability, physical appearance, body size,
race, ethnicity, religion (or lack thereof), or technology
choices, or food orientation. We do not tolerate
harassment of conference participants in any form.
Sexual or homophobic language and imagery is not
appropriate for any conference venue, including talks.

17. No Wahala
www.sikilabs.com
info@sikilabs.com
@diopib @sikilabs