Django forms.py initialized wrongly?

Question

I have a django view communicate the user's preferred locale to a form in forms.py. However, that form seems to get initialized before I even call it.

Class SurveyForm() seems to load before my call from views.py and even before the SurveyForms() init function becomes active.

Here is the code:

class SurveyForm(forms.Form):
    questions = Question.objects.all()
    Q1 = questions.get(identifier='Q1')
    question1 = forms.CharField(required=False, label=Q1.name)

    def __init__(self, *args, **kwargs):
        translation.activate('nl')

When I put translation.activate('nl') in the SurveyForm class, it does work. When I put translation.activate('nl') in the __init__, or in views.py, it does not work. How can this be changed?

Note: I use modeltranslation, so Q1.name will get the Dutch translation when Dutch language is active.

Please confirm that I've edited the code correctly. – holdenweb Jan 24 '16 at 21:07 — holdenweb, Jan 24 '16 at 21:07

Daniel Roseman · Accepted Answer · 2016-01-25T00:09:32.387

2

Anything at class level is executed when the class is defined, on first import. You already know how to do things at instantation time - by doing it in the __init__ method.

It's not clear from your question what Q1 is. Is it a field? If so you can add it to self.fields; otherwise just set it directly on self.

def __init__(self, *args, **kwargs):
    translation.activate('nl')
    super(SurveyForm, self).__init__(*args, **kwargs)
    self.fields['Q1'] = ...
    # or
    self.Q1 = ...

edited Jan 25 '16 at 00:09

answered Jan 24 '16 at 21:18

Daniel Roseman

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Thanks for your answer, I have updated the code for clarity. – Jdruiter Jan 24 '16 at 22:00
1. self.fields['Q1'] gives error: 'SurveyForm' object has no attribute 'fields' – Jdruiter Jan 24 '16 at 22:05
2. self.Q1: works, but I get in the template: – Jdruiter Jan 24 '16 at 22:07
@Jdruiter `self.fields` will work after you've called `super().__init__()`. – knbk Jan 24 '16 at 22:09
Awesomeness. Thanks. – Jdruiter Jan 24 '16 at 22:18

Django forms.py initialized wrongly?

1 Answers1