#25085: Select Widget's __deepcopy__ does not copy its choices.
-------------------------+-------------------------------------------------
Reporter: ericfc | Owner:
Type: Bug | Status: new
Component: Forms | Version: 1.8
Severity: Normal | Keywords: Select Widget deepcopy __deepcopy__
Triage Stage: | choices
Unreviewed | Has patch: 0
Easy pickings: 0 | UI/UX: 0
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Select inherits its parent's (Widget's) __deepcopy__ which does not take
into consideration its choices field and we get weird behavior like below:
{{{
from django import forms
class Fields(forms.Form):
field = forms.ChoiceField(choices=(('one', 'one'), ('two', 'two')))
class Foo(Fields):
def __init__(self, *args, **kwargs):
super(Foo, self).__init__(*args, **kwargs)
self.fields['field'].widget.choices[0] = ('foo', 'foo')
class Bar(Fields):
pass
foo = Foo()
bar = Bar()
foo.fields['field'].widget.choices
>>>[('foo', 'foo'), ('two', 'two')]
bar.fields['field'].widget.choices
>>>[('foo', 'foo'), ('two', 'two')]
}}}
Where foo and bar have nothing to do with one another.
A more simple example:
{{{
import copy
from django import forms
widget = forms.Select()
widget_copy = copy.deepcopy(widget)
widget.attrs is widget_copy.attrs
>>>False
widget.choices is widget_copy.choices
>>>True
}}}
Since we did a deepcopy the {{widget.choices is widget_copy.choices}}}
must have returned {{False}} yet it returned {{{True}}}.
--
Ticket URL: <https://code.djangoproject.com/ticket/25085>
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