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copied!<p><strike></p> <pre><code>class SwallowForm(forms.Form): airspeed_velocity = forms.IntegerField() is_migratory = forms.BooleanField() class AfricanSwallowForm(forms.ModelForm, SwallowForm): class Meta: model = AfricanSwallow class EuropeanSwallowForm(forms.Form, SwallowForm): ... </code></pre> <p>Should work. </strike></p> <p>I have some long running code that works and has the fields attr that looks like this.</p> <pre><code>languages_field = forms.ModelMultipleChoiceField( queryset=Language.objects.all(), widget=forms.CheckboxSelectMultiple, required=False ) class FooLanguagesForm(forms.ModelForm): languages = languages_field class Meta: model = Foo fields = ('languages', ) </code></pre> <p><strike>Notice that I still use the fields tuple in Meta.</strike> The field shows up in the fields dict on the form instance whether or not it is in the Meta.fields.</p> <p>I have a regular form that uses this pattern as well:</p> <pre><code>genres_field = forms.ModelMultipleChoiceField( queryset=blah, widget=forms.CheckboxSelectMultiple, #required=False, ) class FooGenresForm(forms.Form): genres = genres_field </code></pre> <p>I see that my fields dict is working.</p> <pre><code>In [6]: f = FooLanguagesForm() In [7]: f.fields Out[7]: {'languages': <django.forms.models.ModelMultipleChoiceField object at 0x1024be450>} In [8]: f2 = FooGenresForm() In [9]: f2.fields Out[9]: {'genres': <django.forms.models.ModelMultipleChoiceField object at 0x1024be3d0>} </code></pre>

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