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Why I Hate the Django ORM - Speaker Deck
More Decks by Alex Gaynor
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Transcript
-
I ALSO HELP BUILD IT (SO ALL OF THIS STUFF
IS REALLY MY FAULT) Thursday, January 12, 2012 -
SELECT event_type SUM(end_time - start_time) FROM event GROUP BY event_type
Thursday, January 12, 2012 -
WHY DO WE HAVE AN ORM? DATABASE RECORDS INTO OBJECTS
EXECUTE COMMON QUERIES NOT REPLACE SQL Thursday, January 12, 2012 -
IT HAS A SYNTAX Event.objects.values( “event_type” ).annotate( Sum(F(“end_time”) - F(“start_time”))
) Thursday, January 12, 2012 -
Traceback (most recent call last): File "<input>", line 1, in
<module> File ".../query.py", line 741, in annotate is_summary=False) File ".../sql/query.py", line 990, in add_aggregate field_list = aggregate.lookup.split(LOOKUP_SEP) AttributeError: 'ExpressionNode' object has no attribute 'split' FFFFFFFUUUUUUUUUUUU Thursday, January 12, 2012 -
WEREN’T DESIGNED WITH EACH OTHER IN MIND MUCH LESS A
COMPREHENSIVE SYSTEM Thursday, January 12, 2012 -
NOTICE THAT? SQLALCHEMY USES THE SAME SYNTAX FOR FIELDS, EVERYWHERE
Thursday, January 12, 2012 -
STRINGS, KEYWORD ARGUMENTS, AND FUNKY ONE-LETTER OBJECTS (WITH VARYING LEVELS
OF INTEROPERABILITY) Thursday, January 12, 2012 -
WHEN DO YOU USE WHICH? I HAVE NO IDEA (AND
I WROTE THE DAMNED THING) Thursday, January 12, 2012 -
SIMPLE THINGS ARE SIMPLE MEDIUM THINGS ARE POSSIBLE HARD THINGS
AREN’T Thursday, January 12, 2012 -
SIMPLE THINGS SHOULD BE SIMPLE HARD THINGS SHOULD BE POSSIBLE
Thursday, January 12, 2012 -
THE IDEALS OF THE ORM ARE GOOD THE API IS
GREAT FOR SIMPLE CASES Thursday, January 12, 2012 -
BUT THE INCONSISTENCIES BLEED AND THINGS THAT SHOULD BE EASY
AREN’T Thursday, January 12, 2012
