tickets: 6473

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id created changetime last_pulled_from_trac stage status component type severity version resolution summary description owner reporter keywords easy has_patch needs_better_patch needs_tests needs_docs ui_ux
6473 2008-01-28 02:38:23 2008-01-28 03:23:30 2022-03-06 03:37:14.435641 Unreviewed closed Forms     dev worksforme Overriding ModelForm __init__ messes up instance Here's a model and two !ModelForm classes for it: {{{ from django import newforms as forms from django.newforms import ModelForm from django.db import models class MyModel(models.Model): my_field = models.CharField(max_length = 50) class NormalModelForm(ModelForm): class Meta: model = MyModel class OverridingModelForm(ModelForm): def __init__(self, *args, **kwargs): super(OverridingModelForm, self).__init__(args, kwargs) class Meta: model = MyModel }}} "!NormalModelForm" behaves as expected. However, "!OverridingModelForm" which overrides {{{__init__}}} loses the data in its "instance", even though it calls {{{super.__init__}}}. Test case: {{{ >>> model = MyModel(my_field = 'happiness') >>> normal_form = NormalModelForm(instance = model) >>> normal_form.instance.my_field 'happiness' >>> overriding_form = OverridingModelForm(instance = model) >>> overriding_form.instance.my_field '' >>> }}} nobody yourcelf ModelForm __init__ instance 0 0 0 0 0 0