#5863: list_display does not allow functions of referenced objects
-------------------------------------+-------------------------------------
Reporter: Beat | Owner: nobody
Bolli <me+django@…> | Status: closed
Type: | Component: contrib.admin
Uncategorized | Severity: Normal
Milestone: | Keywords: list_display
Version: SVN | Has patch: 1
Resolution: wontfix | Needs tests: 0
Triage Stage: Design |
decision needed |
Needs documentation: 1 |
Patch needs improvement: 1 |
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Comment (by lukeplant):
@brillgen:
It's difficult to believe there would be much difference between the two
methods if you are using 'select_related' correctly (and we don't want to
complicate the logic for select_related any further).
Also, note that you could easily write a function that would eliminate the
boilerplate, if it is really boilerplate that conforms to a common
pattern. Untested code:
{{{
#!python
def foreign_field(field_name):
def accessor(obj):
val = obj
for part in field_name.split('__'):
val = getattr(val, part)
return val
accessor.__name__ = field_name
return accessor
ff = foreign_field
class MyAdmin(ModelAdmin):
list_display = [ff('foreign_key__related_fieldname1'),
ff('foreign_key__related_fieldname2')]
}}}
--
Ticket URL: <http://code.djangoproject.com/ticket/5863#comment:32>
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