Simon Willison’s Weblog

Items tagged django, orm in Nov

Filters: Month: Nov × django × orm ×


django-batch-select (via) A smart attempt at solving select_related for many-to-many relationships in Django. Add a custom manager to your model and call e.g. Entry.objects.all()[:10].batch_select(“tags”) to execute two queries—one pulling back the first ten entries and another using an “IN” query against the tags table to pull back all of the tags for those entries in one go. # 23rd November 2009, 4:19 pm

Secrets of the Django ORM. An undocumented (and unsupported) method of poking a Django QuerySet’s internal query to add group_by and having clauses to a SQL query. # 8th November 2008, 11:49 pm

Django Evolution. Really smart take on the problem of updating database tables to reflect changes to Django models. Code that automatically modifies your database tables can be pretty scary, but Evolution seems to hit the right balance. # 23rd November 2007, 11:49 pm