#23492: F objects are no longer deepcopy-able
-------------------------------------+-------------------------------------
Reporter: ris | Owner: nobody
Type: Bug | Status: new
Component: Database layer | Version: 1.7
(models, ORM) | Keywords: F object expression
Severity: Normal | deepcopy
Triage Stage: Unreviewed | Has patch: 0
Easy pickings: 1 | UI/UX: 0
-------------------------------------+-------------------------------------
I suspect the culprit is commit 3a66035107a640c4905f0a5f247a45f32dbe16d7
"Removed F.__deepcopy__()" because apparently "The method didn't change
standard __deepcopy__ in any way.".
Well, in 1.7.0:
{{{
>>> from django.db.models import F
>>> from copy import deepcopy
>>> f = F ( "something__some_field" )
>>> f.name
'something__some_field'
>>> g = deepcopy ( f )
>>> g.name
AttributeError: 'F' object has no attribute 'name'
}}}
Paste back in the same __deepcopy__ method removed in
3a66035107a640c4905f0a5f247a45f32dbe16d7, and:
{{{
>>> from django.db.models import F
>>> from copy import deepcopy
>>> f = F ( "something__some_field" )
>>> f.name
'something__some_field'
>>> g = deepcopy ( f )
>>> g.name
'something__some_field'
}}}
Tadaa!
Can we have it back please?
--
Ticket URL: <https://code.djangoproject.com/ticket/23492>
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