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POHow to create a Django form from foreign key relationship?
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copied!<p>I want to create a multiple choice question form where all choices where the foreign key points to that question are displayed as checkboxes.</p> <p>From similar questions, I have gathered that subclassing <code>ModelForms</code> might be the way to do this. But I couldn't figure out how to pass the specific <code>question_id</code> to the <code>ModelForm</code>.</p> <p>Currently, I am trying the following:</p> <p>from <code>model.py</code>:</p> <pre><code>class Question(models.Model): question = models.CharField(max_length=200) creationDate = models.DateTimeField('date published') author = models.ForeignKey(User) def __unicode__(self): return self.question class Choice(models.Model): question = models.ForeignKey(Question) choice = models.CharField(max_length=200) correct = models.BooleanField() def __unicode__(self): return self.choice </code></pre> <p>So in <code>forms.py</code>, I've tried to create such a form:</p> <pre><code>class QuestionForm(forms.Form): def __init__(self, *args, **kwargs): super(QuestionForm, self).__init__(*args, **kwargs) question_id = kwargs.pop('question') self.fields['checkboxes'] = forms.ModelChoiceField( queryset = Choice.objects.filter(question = question_id)) </code></pre> <p>In <code>views.py</code>, I create a <code>QuestionForm</code>, passing the <code>question_id</code> as constructor argument. But I keep getting a <code>NameError "name 'question_id' is not defined</code> in QuestionForm where the MOdelChoiceField is constructed.</p>

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