Digging Into Django's Migrations
summary
Walks through the new Django 1.7 migration framework: a rewritten system (about 5% code from South), funded by a Kickstarter raising ~£18,000, that provides a schema editor, field deconstruct hooks, declarative operations, a dependency graph, an autodetector and optimizer. Covers concrete limits and behaviors: SQLite forces table-copy emulation, proxy models and circular foreign keys need manual work, third‑party fields must implement deconstruct, migrations run per database, and test setup can be roughly 3× slower because of new persistence handling.
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chapters (14)
- 0:00Introduction
- 2:00Conclusion
- 2:36South
- 8:19South Structure
- 13:20Django Migrations
- 18:47Operations and State
- 19:43Migrations
- 21:17Scheme Editor
- 23:22RC Construct
- 24:55Graph
- 27:40Autodetect
- 30:30Optimizer
- 32:45Migration Format
- 35:58What Went Wrong
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