Software Development
More about Django · Module 2 - Models and the ORM in depth

2.2 Migrations for real

24 min
Back to the curriculum

Video coming soon

The recording for this lesson has not been published yet.

What we cover

  • What makemigrations actually writes
  • Defaults, nullable columns and three-step changes
  • Data migrations with RunPython
  • Inspecting SQL with sqlmigrate
  • Squashing and fixing broken migration history
Written notes for this lesson are being prepared. The outline above already shows what the recording will cover.
← 2.1 Relations between models 2.3 QuerySets you actually need →

After this lesson you will

  • Read and understand a generated migration file
  • Add non-null fields to a table that has data
  • Move data with a migration instead of by hand

Module 2

2.1Relations between models 2.2Migrations for real 2.3QuerySets you actually need 2.4Custom managers and querysets 2.5Killing N+1 queries 2.6Slugs, timestamps and abstract base models