id	summary	reporter	owner	description	type	status	component	version	severity	resolution	keywords	cc	stage	has_patch	needs_docs	needs_tests	needs_better_patch	easy	ui_ux
9197	Add new fieldtype (eg. Extra)	anonymous	nobody	"If I need often call QuerySets' .extra it is more convinient to add new field type Extra. Ie if I'd like to compute ABS value then instead of 
{{{
#!python
Model.object.extra(select={'abs_value':'ABS(value)'})
}}} 
every time  it would be nice to add to Model new attribute,something like this:

{{{
#!python
  abs_value = model.Extra('ABS(value)')
}}}"		closed	Database layer (models, ORM)	1.0		wontfix			Unreviewed	0	0	0	0	0	0