MIgrating from Django 1.6 to Django 1.8

Transcript

1. Migrating from Django
   1.6 to 1.8
   Earthmiles
   

   View Slide

2. Why Django 1.8 over 1.6?
   • Prefetch object for advanced control on
   prefetch_related [earlier it had to be only .all()]
   • Conditional Expressions - Case() and When()
   

   View Slide

3. Django 1.8 - First Steps
   • Have good tests, with good coverage
   • $ pip install -U Django
   

   View Slide

4. Run tests and upgrade
   packages
   django-filter==0.11.0
   python-social-auth==0.2.12
   requests==2.7.0
   requests-oauthlib==0.5.0
   six==1.9.0
   psycopg2==2.6.1
   django-debug-toolbar==1.3.2
   django-categories==1.3b8
   nose==1.3.7
   django-nose==1.4.1
   factory-boy==2.5.2
   django-taggit==0.17.0
   

   View Slide

5. New admin has quirks (for
   good)
   class TrackedActivityForm(forms.ModelForm):
   class Meta:
   model = TrackedActivity
   + fields = “__all__” #now required for all fields case
   

   View Slide

6. Schemamigrations from 1.6
   (with South) to 1.8
   • Perhaps a better way of achieving this is to migrate
   to 1.7 first and then to 1.8
   • At Earthmiles, we migrated directly to 1.8
   

   View Slide

7. Schemamigration Steps
   • All steps up to this point
   • Remove 'south' from INSTALLED_APPS.
   • Remove South from requirements.txt
   • Delete all your (numbered) migration files, but not
   the directory or __init__.py - make sure you remove
   the .pyc files too.
   • find . -name '*.pyc' -print -exec rm -rf {} \;
   • find . -name '00*.py' -print -exec rm -rf {} \;
   

   View Slide

8. Schemamigration Steps
   • All steps up to this point
   • Remove 'south' from INSTALLED_APPS.
   • Remove South from requirements.txt
   • Delete all your (numbered) migration files, but not
   the directory or __init__.py - make sure you remove
   the .pyc files too.
   • find . -name '*.pyc' -print -exec rm -rf {} \;
   • find . -name '00*.py' -print -exec rm -rf {} \;
   

   View Slide

9. View Slide