Commit Graph

5 Commits

Author SHA1 Message Date
Anubhav Joshi 36de29200e Fixed #22405 -- Fixed string error in models/queries docs. 2014-04-08 13:33:40 +02:00
Loic Bistuer f51c1f5900 Fixed #17001 -- Custom querysets for prefetch_related.
This patch introduces the Prefetch object which allows customizing prefetch
operations.

This enables things like filtering prefetched relations, calling select_related
from a prefetched relation, or prefetching the same relation multiple times
with different querysets.

When a Prefetch instance specifies a to_attr argument, the result is stored
in a list rather than a QuerySet. This has the fortunate consequence of being
significantly faster. The preformance improvement is due to the fact that we
save the costly creation of a QuerySet instance.

Thanks @akaariai for the original patch and @bmispelon and @timgraham
for the reviews.
2013-11-07 14:49:49 +02:00
Tim Graham ffcfb4cdcc Fixed #21344 -- Typo in docs/ref/models/queries.txt 2013-10-28 14:52:26 -04:00
Florian Hahn 5240b83462 Fixed #17027 -- Added support for the power operator in F expressions.
Thanks dan at dlo.me for the initial patch.

- Added __pow__ and __rpow__ to ExpressionNode
- Added oracle and mysql specific power expressions
- Added used-defined power function for sqlite
2013-10-22 10:29:57 -04:00
evildmp 79cc66692a Consolidated documentation for F() and Q() 2013-09-06 12:57:25 -05:00